Lipoprotein testing

This is an update of a post I made about a year ago. However, I'm reposting it since the question comes up so often.


How can I get my lipoproteins tested?
This question came up on our recent online chat session and comes up frequently phone calls and e-mails.

If lipoprotein testing is the best way to uncover hidden causes of coronary heart disease, but your doctor is unable, unknowledgeable, or unwilling to help you, then what can you do?

There are several options:

1) Get the names of physicians who will obtain and interpret the test for you. That’s the best way. However, it is also the most difficult. Lipoprotein testing, despite over a decade of considerable scientific exploration and validation in thousands of research publications, still remains a sophisticated tool that only specialists in lipids will use. But this provides you with the best information on you’re your lipoproteins mean.
2) If you don’t have a doctor who can provide lipoprotein testing and interpretation, go to the websites for the three labs that actually perform the lipoprotein tests: www.liposcience.com (NMR); www.berkeleyheartlab.com (electropheresis or GGE); www.atherotech.com (ultracentrifugation). None of them will provide you with the names of actual physicians. They can provide you with the name of a local representative who will know (should know) which doctors in your area are well-acquainted with their technology. I prefer this route to just having a representative identify a laboratory in your area where the blood sample can be drawn, because you will still need a physician to interpret the results¾this is crucial. The test is of no use to you unless someone interprets it intelligently and understands the range of treatment possibilities available. Don’t be persuaded by your doctor if he/she agrees to have the blood drawn but has never seen the test before. This will be a waste of your time. That’s like hoping the kid next door can fix your car just because he says he fixed his Mom’s car once. Interpretation of lipoproteins takes time, education, and experience.

3) Seek out a lipidologist. Lipidologists are the new breed of physician who has sought out additional training and certification in lipid and lipoprotein disorders. Sometimes they’re listed in the yellow pages, or you can search online in your area. One drawback: Most lipidologists have been heavily brainwashed by the statin industry and tend to be heavy drug users.

4) Contact us. I frankly don’t like doing this because I feel that I can only provide limited information through this method and, frankly, it is very time consuming. I provide a written discussion of the implications and choices for treatment with the caveat to discuss them with your doctor, since I can’t provide medical advice without a formal medical relationship. We also charge $75 for the interpretation. But it’s better than nothing.

5) Make do with basic testing. Basic lipids along with a lipoprotein(a), C-reactive protein, fibrinogen, and homocysteine would provide a reasonable facsimile of lipoprotein testing. You’ll still lack small LDL and postprandial (after-eating) information, but you can still do reasonably well if you try to achieve the Track Your Plaque targets of 60-60-60. It’s sometimes a necessary compromise.

Our discussions on the Track Your Plaque Forum have impressed me with the difficulty many people encounter in getting lipoproteins drawn and interpreted. Some of our Members have been very resourceful identifying blood draw laboratories around the country, such as Lab Safe, that will at least provide the blood draw service.

I wish it was easier and we are working on some ideas to facilitate this nationwide. It will take time.

In 20 years, this will be a lot easier when doctors more commonly use lipoprotein testing. But for now, you can still obtain reasonably good results choosing one of the above alternatives.

Is it exercise or diet?

Wayne, a 61-year old retired school superintendent, had been an exercise fanatic all his adult life. If not running long distances and occasional marathons, he'd bike up to 70 miles a day. He did this year-round. In cold weather, he set his bicycle up on an indoor device and also ran on a treadmill and added weight training.

That's why it was kind of surprising that he sported a large belly. At 5 ft 8 inch and 190 lbs, that put his Body Mass Index (BMI) also high at 28.8 (desirable <25). You'd think that vigorous, almost extreme, exercise like this would guarantee a slender build.

Wayne also had lipoproteins to match: triglycerides 205 mg/dl, LDL 176 mg/dl but LDL particle number much higher at 2403 nmol/l (an effective LDL of 240 mg/dl); 75% of LDL particles were small.

I asked Wayne about his diet. "I eat healthy. Cheerios for breakfast usually. Some days I'll skip breakfast. Lunch is almost always a sandwich: tuna, turkey, something like that on whole wheat bread or a whole wheat bagel. Chips, too, but I guess that's not too healthy. Dinners vary and we eat pretty healthy. Almost never pizza or junk like that."

"Pasta?" I asked.

"Oh. sure. Two or three tiems a week. Always whole wheat. With a salad."

Wayne was well aware of the conventional advice for whole grains and, indeed, had been trying to increase his intake, particularly since his basic cholesterol numbers had been high in past. To his surprise, the more he tried at diet, the more LDL seemed to go up, as did triglycerides.

I see this situation every day: The obsession with processed carbohydrate foods, worsened by the message perpetuated by the American Heart Association, the USDA Food Pyramid, Kraft, Kelloggs, Post, etc. Eat more fiber, eat whole grains.

NY Times columnist, Jane Brody, chronicles her (embarassing) mis-adventure following the same mis-guided advice in Cutting Cholesterol, an Uphill Battle.

According to the USDA Food Pyramid, Wayne is not getting enough grains and whole grains, particularly since he is highly physically active. Consistent with the message given by the food industry: "Eat more!"

The food industry-supported Whole Grain Council advises:

Whole Grains at Every Meal
The US Dietary Guidelines recommend meeting the daily requirement by eating three "ounce-equivalents" of breads, rolls, cereals or other grain foods made with 100% whole grains. A slice of bread or a serving of breakfast cereal usually weighs about an ounce.

Want an easier way to think about it? Just look at your plate at each meal, and make sure you've included some source of whole grains. That's why our slogan is "Whole Grains at Every Meal."



By this scheme, if you are overweight, it's because you lack fiber and you're too inactive. "Get up and go!" It's not the diet, they say, it's you!

See through this for what it is: Nonsense. Wayne was overweight, packing 20 extra pounds in his abdomen from his over-dependence on processsed carbohydrates--"whole grains"--not from inactivity.

Instant heart disease reversal


What if reversal of heart disease--regression of coronary atherosclerotic plaque--were achievable instantly? Just add water and--voila!!

To my knowledge, it is not--yet. But I sometimes play with this idea in my head. I could imagine that such a program would consist of a few essential elements:

--A fast or semi-fast, or at least a very spare diet, over a period like 10 days to promote net catabolism. It is also supremely anti-inflammatory to restrict calories.

--High-dose vitamin D, e.g., 20,000 units per day of D3 to fully replenish depleted stores and achieve all the metabolism-correcting effects of D3 restoration.

--EPA + DHA at a higher than usual dose with frequent throughout-the-day dosing to encourage replacement of cellular lipid constituents with the more stable omega-3 fraction of fatty acids.

Beyond this, I'm uncertain. What role l-arginine, statins, niacin . . . conjugated linoleic acid? ApoA1 Milano infusions?

This is simply whimsical at this point. I don't know if such an approach would work. But if it did, you might imagine that it would offer an opportunity--for the properly motivated--as an alternative treatment for angina, advanced coronary disease, a means to pull someone back from the brink.

With the insights gained from our slow-but-powerful Track Your Plaque approach, perhaps we will also gain insights into how to accelerate such a process of reversal so that it is achievable in days, rather than months or years.

The small LDL epidemic

Ten years ago, small LDL was fairly common, affecting approximately 50% of the patients I'd see. For instance, an LDL particle number of 1800 nmol/l would be 40-50% small LDL in about half the people.

But in the last few years, I've witnessed an explosion in the proportion of people with small LDL, which now exceeds 80-90% of people. The people who show small LDL also show more severe patterns. 80-90% small LDL is not uncommon.

Why the surge in the small LDL pattern? Two reasons: 1) The extraordinary surge in excess weight and obesity, both of which favor formation of small LDL particles, and 2) over-reliance on processed carbohydrates, especially wheat-based convenience foods.

The constant media din that parrots such nonsense as the report on CNN Health website, Healthful Breakfast Tips to Keep You Fueled All Day, helps perpetuate this misguided advice. The dietitian they quote states:

"If you don't like what you're eating, you won't stick with it. If your choices aren't the most nutritious, small tweaks can make them more healthful. For example, if you have a sweet tooth in the morning, try a piece of nutty whole-grain bread spread with a tablespoon each of almond butter (it's slightly sweeter than peanut butter) and fruit preserves instead of eating foods that offer sweetness but little nutritional benefit, like doughnuts or muffins. If you enjoy egg dishes but don't have time to prepare your favorite before work, try microwaving an egg while toasting two slices whole wheat or rye (whole-grain) bread. Add a slice of low-fat cheese for a healthful breakfast sandwich that's ready in minutes. And don't overlook leftovers. If you feel like cold pizza (which contains antioxidant-filled tomato sauce, calcium-rich cheese, and lots of veggies), have it. It's a good breakfast that's better than no breakfast at all."

It sure sounds healthy, but it's same worn advice that has resulted in a nation drowning in obesity. The food choices advocated by this dietitian keep us fat. It also perpetuates this epidemic of small LDL particles.

If you have small LDL and its good friend, low HDL, it's time for elimination of wheat products, not some politically-correct silliness about increasing fiber by eating whole grains. Whole grains create small LDL! Or, I should say, what passes as whole grains on the supermarket shelves.

For some helpful commentary on this issue, see Fanatic Cook's latest post, Playing with Grains.

Mini-dose CTA?

I caught this little news report in the online edition of Canyon News , an LA paper, under the title Cedars-Sinai Develops Test to Prevent Heart Attacks .

They report that Dr. Daniel S. Berman M.D., chief of Cardiac Imaging and Nuclear Cardiology at Cedars-Sinai, reports that a new method of performing CT coronary angiography, "mini-dose CTA," has been developed that allows both coronary calcium scoring as well as CT coronary angiography (CTA) at a dose as low as 10% of standard dose. No technical details were provided.

Now, that may be worth knowing more about. If this is true, then CTA may indeed be useful as a "screening" procedure. However, we are going to need to know more: What devices are capable of doing this, what settings on the devices were used, etc. It does indeed come from a reputable source in Dr. Dan Berman, who is well known in nuclear cardiology circles.

We will try and dig for info. Stay tuned.

Wheat-free and weight loss

With a heart scan score of 1222, Leslie could be in deep trouble in short order.

At 64 years old, Leslie had gained nearly 40 lbs since she'd given up a lot of her activities caring for a husband who'd developed psychological difficulties and stopped contributing to the household duties. A tall woman at 5 ft 9 inches, she held her 202 lbs well, but her lipoprotein patterns were a disaster:

--LDL particle number 2482 nmol/l--an equivalent LDL cholesterol of 248 mg/dl (drop the last digit)
--HDL 38 mg/dl
--Triglycerides 241 mg/dl
--90% of LDL particles were small
--Lipoprotein(a) 240 nmol/l

Blood sugar was in the pre-diabetic range at 112 mg/dl, C-reactive protein was high at 3.0 mg/l, blood pressure was somewhat high at 140/84.

Now, with the exception of lipoprotein(a), these patterns are exquisitely weight-sensitive. A reduction in weight would yield effects superior to any medication I could give her.

Processed wheat products were a big problem for Leslie: whole wheat bread, pretzels for snacks, whole wheat pasta. Yes, they sound healthy, even endorsed by the American Heart Association, often bearing "heart healthy" labels on the packages. Don't you believe it.

In particular, Leslie had the number one cause for heart disease in America: small LDL particles, a pattern that is magnified 30-70% by wheat products. Endorsed by the Heart Association? (As I often tell people, if you want heart disease, follow the diet advocated by the American Heart Association.)

Leslie was skeptical, worried that she would be hungry all the time and would have virtually nothing left to eat. Instead, when she returned to the office three months later, she reported that eating was easy, finding healthy foods not containing wheat was easier than she thought, she felt great, finding more energy than she'd had in years.

She'd also shed 30 lbs.

Leslie's lipoprotein patterns also reflected the weight loss. She achieved her 60:60:60 Track Your Plaque lipid targets, small LDL shrunk dramatically, blood sugar and blood pressure were back in normal ranges.

I see results like Leslie's several times every week. For those of us with patterns like Leslie's, or just obesity that accumulates in the abdomen, going wheat-free is among the most powerful single strategies I know of.

If you need convincing, try an experiment. Eliminate--not reduce, but eliminate wheat products from your diet, whether or not the fancy label on the package says it's healthy, high in fiber, a "healthy low-fat snack", etc. This means no bread, pasta, crackers, cookies, breads, chips, pancakes, waffles, breading on chicken, rolls, bagels, cakes, breakfast cereal. I find elimination of wheat easier than just cutting back. I believe this is because wheat is powerfully addictive. It's very similar to telling an alcoholic that a drink now and then is okay--it just doesn't work. They need to be alcohol-free. Most of us need to be wheat-free, not just cut back.

You won't be hungry if you replace the lost calories with plenty of raw almonds, walnuts, pecans, sunflower and pumpkin seeds; more liberal use of healthy olive oil, canola oil and flaxseed oil; adding ground flaxseed and oat bran to yogurt, cottage cheese, etc.; and more lean proteins like lean beef, chicken, turkey, fish, and eggs.

The majority of people who go wheat-free lose weight, sometimes dramatically. Most people also feel better: more energy, more alert, better sleep, less mood swings. Time and again, people who try this will tell me that the daytime grogginess they've suffered and lived with for years, and would treat with loads of caffeine, is suddenly gone. They cruise through their day with extra energy.

Even without weight loss, going wheat-free usually raises HDL, reduces the dreaded small LDL dramtically. It also reduces triglycerides, blood sugar, C-reactive protein, blood pressure. Blood sugar control in diabetics is far easier, with less fluctuations and sharp rises in blood sugar.

Success at this also yields great advantage for your heart scan score control and reversal efforts.

Collective wisdom


As public consciousness and knowledge about health issues grows, thanks to the internet and other media, I predict that:

1) Hospitals will recede into a role of acute and catastrophic care ONLY, dropping the charade of providing health, which they do NOT.

2) Doctors and other health professionals will begin to see themselves as providers of acute and catastrophic care, also. They will stop providing day to day care, such as treating high blood pressure, cholesterol, breast exams, and other preventive maintenance.

3) Instead, preventive care will be self-provided. The public will have acquired sufficient savvy and know-how to manage issues like blood pressure themselves. They will need the assistance of helpful information resources, web-based for the most part. Much preventive care can, in fact, be algorithm-driven, just like following a simple recipe.

All the worries about runaway health care costs will be much reduced, since excessive testing driven by liability worries will disappear, repeated office visits for day-to-day issues will go away. Yes, you will need a doctor and hospital for a broken leg, car accident, unexpected cancer, or non-compliance or neglect of prevention.

But osteoporosis, high blood pressure, nutrition, weight loss, hormone management, cholesterol issues, minor complaints will all be managed by people themselves with the assistance of web-based knowledge systems.

I already sense this sort of phenomeonon developing, though in its infancy, in venues like the Track Your Plaque Forum and other health portals, places where the information being discussed exceeds the quality of information you can obtain from your doctor. Over and over again, for instance, the sophistication and knowledge demonstrated by our Track Your Plaque Forum discussions shows that the public is capable of far more understanding of health issues than many previously believed. Most of our members could carry on a credible conversation with trained lipid experts. The knowledge base of our members exceeds that of 98% of most of my colleagues when it comes to heart scans, lipoproteins, and nutrition.

I am in awe of Wikipedia, the popular online encyclopedia. Five 20- and 30-somethings have created a knowledge base that has now eclipsed Encyclopedia Britannica in size and scope, with equivalent accuracy, and relatively little cost. I'd like to see the same phenomenon occur in health care information, helping to usurp the current paternalistic "I'll tell you what to do" model.

Success--Slow but sure

John is a gentleman.

At age 76, he continues to teach at a local college. He's a delight to talk to, having written several scholarly books on religious topics. He's a fountain of knowledge on religious history and the roots of faith.

John is one of those incurably optimistic people, always greeting me with a smile and a warm handshake. I can't help but linger for a hour or so to talk with John, unfortunately disrupting my office schedule miserably.

John is another Track Your Plaque success story. Though he didn't set any records in reduction of his heart scan score, he did it simply by adhering to the program over a period of two years, succeeding slowly but surely.

John's first heart scan score: 1190, a score that carries as much as a 25% annual risk for heart attack. Among the list of causes was an LDL cholesterol in the 170 mg/dl range, along with an LDL particle number that verified the accuracy of LDL.

Among John's suggested treatments was a statin drug, since I was not confident he could reduce LDL with diet and nutritional modifications sufficiently to safely reduce both LDL and his risk for heart attack. But he proved terribly intolerant to any dose of any statin, with incapacitating and strange side-effects, like head-to-toe itching, abdominal cramps and diarrhea. It was clear: John needed to do the program without benefit of a statin drug.

I therefore asked John to maximize all efforts that reduce LDL, 70% of which were small LDL paricles despite his very slender build. He used oat bran and ground flaxseed daily, raw nuts, a soy protein smoothie every morning, and eliminated wheat and other high-glycemic index foods (including the Oreos he loved to snack on). Because the mis-adventures with statin drugs wasted nearly a year, I asked John to undergo another heart scan. Score 2: 1383, a 16% increase.

I asked John to keep on going. Thankfully, he did manage to tolerate fish oil, niacin (though it required over a year just to get to a 1000 mg per day dose), and vitamin D. With all these efforts, he did reduce LDL to the 80-90 mg/dl range. Of course, John's unflagging optimism was crucial. He did express his occasional anxiety over his heart scan score, but dealt with it in a logical, philosophical way. He understood that there was no role for prophylactic stents or bypass, and he accepted that much of his program rested on his ability to adhere to the strategies we advised.

Another year later, a 3rd heart scan: 1210, a 12% reduction.

I'm very proud of John and his success. When you think about it, he succeeded in conquering heart disease with some very simple tools, minus statin drugs. It can be done, but requires consistency and patience--and an optimistic outlook.

Vitamin D and octagenarians

Roger practically bounced in his chair vibrating with energy.

"It must be the vitamin D! I haven't felt like this in years. I can work around the yard all day and still have energy left over."

At age 84, Roger started out with pretty good health, despite a prosthetic valve and bypass surgery 5 years earlier. He looked 74, perhaps younger.

I've seen this effect now in about 20 octagenarians. A Track Your Plaque Member mentioned this same effect in his father-in-law in a discussion in our Forum. Most are taking around 6000-8000 units per day (gelcap, of course). The average dose of vitamin D tends to be higher in this age group, since by age 80, you've essentially lost the capacity to convert 7-hydrocholesterol to active vitamin D3 in the skin. Most octagenarians start with 25-OH-vitamin D3 levels of 10 ng/ml or less--profound deficiency.

I believe the effect is real, having now witnessed it multiple times. Unfortunately, my observations are too informal to qualify as a study. (I wouldn't even know how to quantify this. I suppose some sort of muscle and coordination testing might yield quantifiable measures.) However, there are some data emerging that show less fractures, falls, improved coordination, and perhaps improved memory and mentation with vitamin D supplementation, though doses often used in studies tend to be lower than what we are using in practice.

I haven't been so excited about the effects of a nutritional supplement in a long time. Vitamin D continues to yield surprises every day in its array of positive and powerful effects.

Could we say that vitamin D restores youthfulness?
Life Extension article on vitamin D

Life Extension article on vitamin D


For anyone looking for a discussion about the emerging role of vitamin D as a cause for coronary disease, see my recent article, Vitamin D’s Crucial Role in Cardiovascular Protection, in Life Extension Magazine, now posted online at:

http://www.lef.org/magazine/mag2007/sep2007_report_vitamind_01.htm.




Vitamin D has assumed an absolutely critical role in the Track Your Plaque program for coronary plaque reversal and dropping CT heart scan scores. Since adding vitamin D and aiming for blood levels of 50-60 ng/ml, our success rate has skyrocketed. In fact, I wonder just how well our two most recent record holders--51% and 63% drops in heart scan scores--would have fared without it. (They probably would have dropped, but no where near as much.)

Also, a full-length booklet that contains just about everything you want to know about vitamin D (or at least a right-this-moment summary of what is known about it) will be available to Track Your Plaque Members for free before the end of the year.

If you haven't done so already, DO THE D!!

Comments (5) -

  • wccaguy

    9/14/2007 5:24:00 AM |

    Dr. Davis,

    I continue to be amazed at how much value you are providing all the time to those of us deeply concerned about heart disease.

    Whether it's at this blog, at LEF.org, at your TrackYourPlaque.com site, or in your Track Your Plaque book, your contribution is pretty astounding.

    I only found your work in the last 2-3 weeks and already it has made a deep impression on me and I'm getting clearer about what I need to do to combat heart disease in myself and in family members.

    Thanks for all you're doing!

  • Dr. Davis

    9/14/2007 12:14:00 PM |

    Wow!

    Thanks for the feedback. I'm glad it's helping you. It is wonderful to hear back about the impact the program is having.

  • Bix

    9/15/2007 9:45:00 AM |

    Excellent article!  I especially liked the tie-in to poor kidney function.

  • Rich

    9/17/2007 1:14:00 AM |

    Dr. Davis: In your excellent LEF article, I found your reference to a fascinating statement about statins and vitamin D by Dr. David Grimes of the UK. For those interested, here is the Lancet source article (reprinting for educational purposes):

    The Lancet 2006; 368:83-86
    DOI:10.1016/S0140-6736(06)68971-X

    Are statins analogues of vitamin D?
    David S Grimes MD, Blackburn Royal Infirmary, Blackburn, Lancashire BB6 8HE, UK

    Summary

    There are many reasons why the dietary-heart-cholesterol hypothesis should be questioned, and why statins might be acting in some other way to reduce the risk of coronary heart disease. Here, I propose that rather than being cholesterol-lowering drugs per se, statins act as vitamin D analogues, and explain why. This proposition is based on published observations that the unexpected and unexplained clinical benefits produced by statins have also been shown to be properties of vitamin D. It seems likely that statins activate vitamin D receptors.
    Back to top

    During the late 19th century, conventional wisdom held that masturbation was the cause of epilepsy, a more plausible explanation than the previous notion that epilepsy was the result of possession by the devil, and illness in general the result of divine interference. Since bromide was thought to reduce sexual desire, it became the logical treatment. Although reasonably successful, bromide worked for reasons that are different from the theory on which it was based. Can the same be said of statins for heart disease?

    The emergence of coronary heart disease (CHD) in the 20th century required an explanation. Some had noted that cholesterol accumulated in the walls of the arteries, and a process of accretion was hence described as the major mechanism. Cholesterol was assumed to originate from diet, and the diet-cholesterol-heart hypothesis was established. The logical treatment was to reduce dietary and serum cholesterol concentrations.

    Many inconsistencies in this hypothesis have emerged and been disregarded. In the London banking and transport study,1 for example, men with the highest dietary cholesterol intake had the lowest incidence of CHD. Furthermore, the results of the Framingham study2 showed that raised concentrations of serum cholesterol were predictive of CHD only in men younger than age 55 years. Findings of studies from Honolulu3 and Paris4 suggest a protective effect of high serum cholesterol concentrations, and the Leningrad paradox5 indicates that those exposed to famine subsequently have a high incidence of CHD, the opposite of what is expected. In Europe, populations that consume a large amount of dietary fat and cholesterol have a low incidence of CHD (the French paradox),6 and the lowest incidence of CHD is seen in European nations with the lowest consumption of wine and the most socioeconomic deprivation (the Albanian paradox).7

    Initial treatments to reduce serum cholesterol were not effective. When introduced, however, statins did greatly reduce serum cholesterol concentrations by interfering with its synthesis; the beneficial effects of statins in CHD have been assumed to be the result of cholesterol-lowering, an assumption that I believe is a serious mistake.

    Statins and the heart

    The first statin trial was the Scandinavian Simvastatin Survival Study (4S),8 and its findings indicated a significant clinical benefit from simvastatin. The results of the West of Scotland Coronary Prevention Study (WOSCOPS)9 also showed clinical benefit from statins (pravastatin) and of a greater magnitude than expected; the mortality reduction was about 35%, whereas the reduction in cholesterol concentrations predicted a mortality reduction of only 25%. WOSCOPS9 showed no association between cholesterol-lowering and clinical benefit,10 indicating that cholesterol-lowering was not the mechanism by which pravastatin reduced coronary events.

    In WOSCOPS, statins lowered serum cholesterol concentrations, but also raised concentrations of HDL cholesterol and lowered those of serum triglyceride, indicating that inhibition of 3-hydroxy-3-methylglutaryl coenzyme A reductase was not the only metabolic action. The clinical experiment of cholesterol-lowering was thus intrinsically flawed, and what must be understood is that 4S and WOSCOPS were trials of statin therapy and not trials of cholesterol-lowering.

    Unexpected benefits of statins

    It is noteworthy that the participants treated with pravastatin in WOSCOPS had a reduced incidence of diabetes compared with controls.11 Additionally, when pravastatin was given to recipients of heart transplants in an attempt to reduce the likelihood of CHD, a reduction in the rate of rejection and an increase in overall survival was noted, irrespective of CHD status.12 The same pattern was seen in recipients of kidney transplants.13 Clinical benefits of statins have also been noted in a placebo-controlled trial14 of atorvastatin for rheumatoid arthritis. Furthermore, simvastatin has been used successfully to treat patients with multiple sclerosis.15 As with CHD, diabetes, rheumatoid arthritis, and transplant rejection, the benefit noted with respect to multiple sclerosis is independent of any effect on serum cholesterol.
    Statins also have an effect on bone, and women who take statins have a greater bone density than those who do not.16 Moreover, the findings of the 10-year follow-up study of participants in 4S17 indicate a significantly reduced risk of cancer, particularly colorectal, lung, and prostate cancer, in those who received simvastatin. Results of a population study from Israel18 also show a greatly reduced risk of colorectal cancer in those taking statins.

    In 1974,19 a group of illustrious diet-cholesterol-heart researchers studied the association between cholesterol and cancer. They noted that high serum cholesterol concentrations conferred protection against colon cancer. The effects of statins mentioned above hence present a major paradox: how can a drug that lowers serum cholesterol concentrations reduce the risk of colon cancer when high serum cholesterol concentrations are, in fact, protective?

    A drug can act as a poison by blocking normal metabolic processes, but to produce a beneficial effect (other than antibacterial) we should assume that it is switching on or enhancing a normal metabolic process. I therefore suggest that statins mimic many of the actions of vitamin D and can be considered analogues of vitamin D.

    Sunlight and vitamin D

    Heart disease

    In Europe, there is a higher rate of mortality from CHD in the northern than in the southern countries, with the lowest rates noted along the Mediterranean coast.20 This pattern suggests that susceptibility to CHD is affected by duration of exposure to sunlight. This notion is supported by findings from the USA21,22 that the higher the altitude of residence, and hence the greater the sunlight intensity, the lower the risk of heart disease.

    Furthermore, the only dietary change that consistently protects against CHD is an increase in consumption of oily fish and fish oil, which contain large amounts of vitamin D.23 In the Netherlands, mortality from CHD was more than 50% lower in men who consumed at least 30 g of fish per day than in those who did not eat fish.24 A similar result was reported in women from a 16-year follow-up study in the USA.25

    Multiple sclerosis

    Multiple sclerosis also shows a latitude gradient in Europe, with the world's highest incidence reported in Scotland.26 The risk of developing the disease is reduced by a third by regular supplementation with vitamin D.27

    Cancer

    The risk of breast cancer and colon cancer is high in northwest Europe and much lower in the Mediterranean countries.28 And, in the UK, people die more readily from cancer in the north than in the south of the country. After being diagnosed, 34% of men with cancer and resident in Oxfordshire survive for 5 years compared with 26% of those who live in the northwest and Yorkshire. Men with stomach cancer who live in London survive on average twice as long as those who live in the northwest of England; the same applies to bladder cancer.29 Patients with colon cancer also have a greater chance of survival if they live in the south of England rather than in the north.30 The benefits of sunshine and vitamin D would explain these associations.
    Results of a study31 done in 1941 in the USA and Canada showed that the cancer death rates among residents of the most northern cities were two and a half times those of the most southern cities. An extensive study32 of more than 5000 locations in the USA has shown that incidence rates of cancer are lowest where ultraviolet light exposure is greatest. Bladder, breast, colon, kidney, oesophageal, ovarian, prostate, rectal, stomach, and uterine cancers, and non-Hodgkin lymphoma are associated with low exposure to ultraviolet light.32

    In the USA, cancer of the prostate has an increasing incidence with distance from the equator, suggesting a protective effect of sunshine. The incidence is highest in the eastern states and lowest in the west.33 This is exactly the same as with CHD, and is probably the result of a high altitude being protective because of greater ultraviolet light exposure. The association between prostate cancer and insufficient access to ultraviolet light has also been noted in the UK,34 with men exposed to low levels of ultraviolet light developing cancer at a younger age than those exposed to high levels (median age 67•7 years vs 72•1 years).

    In a study35 of 456 people with early-stage lung cancer who had undergone surgery, those diagnosed and operated on in the summer, spring, or autumn had a significantly higher 5-year survival rate than those diagnosed and operated on in the winter. The survival rate was 29% in those who took no vitamin D supplements and had treatment in the winter compared with 72% in those who took vitamin D supplements and were treated in the summer.35


    Diabetes

    The international distribution of diabetes in children is very similar to that of CHD, with incidence increasing with distance from the equator,36 again suggesting a protective effect of sunlight and vitamin D. Furthermore, children of women who do, compared with those who do not, take cod liver oil during pregnancy have a reduced incidence of type 1 diabetes.37 The findings of a retrospective study,38 undertaken in Finland and involving 10 821 children born in 1966, indicate that the incidence of diabetes in adulthood is almost ten times higher in those who do not, compared with those who do, take vitamin D supplements in childhood. The benefit of vitamin D supplementation during infancy has been further strengthened by the findings of a large study undertaken in Norway.39

    Rhematoid arthritis

    Kröger and colleagues40 noted that 16% of 143 women with rheumatoid arthritis, compared with the general population, had very low concentrations of serum calcidiol. During the winter, 73% had levels of calcitriol below the seasonally adjusted normal range and the lowest levels were in patients with very active disease. In another study,41 of 19 patients with rheumatoid arthritis given vitamin D supplements, nine reported a complete remission of symptoms, and eight a satisfactory response. Inflammatory markers also improved: the mean erythrocyte sedimentation rate fell by 43% and the mean concentrations of C-reactive protein by 52%. This study is a small one but although far from conclusive the results conform to a pattern that should not be ignored.


    Testing of my hypothesis

    In view of the above, there is a striking similarity between the benefits of vitamin D and the benefits of statin therapy. I believe that the unexpected and unexplained beneficial effects of statin therapy might be mediated by activation of vitamin D receptors by this group of drugs. This hypothesis is, in theory, easy to test.
    A prospective study should be undertaken in cancer treatment and prevention, with a factorial design, so that patients receive statins, vitamin D, a combination of statins and vitamin D, or placebo. A similar outcome in the three treatment groups would lend support to the suggestion of statins acting via vitamin D receptors. If vitamin D and statins are activating the same receptors, then if both are given in sub-maximum doses, the two together would have a greater effect than each individually. Intervention studies should also be undertaken to look at the relapse rates of established illnesses, including CHD, multiple sclerosis, and rheumatoid arthritis, comparing statins and vitamin D.

    The difficulty in doing these studies is that we know only the minimum dose of vitamin D necessary to prevent and heal rickets: we do not know the dose necessary to increase to a maximum the other effects, especially those that enhance immune competence. The same applies to statins: their effect on serum cholesterol concentrations is easy to measure, but we do not know what to measure as a biochemical surrogate for the other effects, again probably those enhancing immune competence. As such, a range of treatment doses of vitamin D and statins need to be investigated. Additionally, clinical trials of established treatments—eg, statins for CHD—are difficult to design because of the ethics of not giving an established medication (a statin), but in place a trial medication (vitamin D). Comparisons with vitamin D supplements could be undertaken, but only once the optimum dose of vitamin D has been established.

    Colonic mucosa and colonic cancer cells contain vitamin D receptors,42 strengthening my suggestion that vitamin D is biologically active in these tissues. Furthermore, vitamin D has an inhibitory effect on colonic carcinoma cell lines.43 Do statins have a similar effect? In-vitro experiments are one way that the effects of statins on vitamin D receptors could be investigated directly.

    Conclusion

    Anomalous results, such as the unexpected benefits of statins detailed here, lead to the advancement of science. Such an opportunity for research should not be overlooked. Statins should be looked at objectively and the diet-cholesterol-heart hypothesis on which the treatment was based disregarded. Statins have been described as wonder drugs because of their unexpected benefits; my hypothesis gives an opportunity for new thinking. The explanation of statins as analogues of vitamin D, if correct, would be reassuring to the millions of people who take them every day. Finally, sunlight and vitamin D might at last be recognised for their widespread health benefits.

    Conflict of interest statement
    I declare that I have no conflict of interest.


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    Affiliations

    a. Blackburn Royal Infirmary, Blackburn, Lancashire BB6 8HE, UK

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    Also, a full-length booklet that contains just about everything you want to know about vitamin D (or at least a right-this-moment summary of what is known about it) will be available to Track Your Plaque Members for free before the end of the year.

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