Go the distance! 8. May 2006 William Davis (0) How long should it take to stop or reverse coronary plaque growth? How long will it require to stop your heart scan score of, say, 350, from increasing at the expected rate of 30% per year, slow it down (we say "decelerate") to less than 30%, or stop it altogether? Or, actually reduce your score?It can vary widely. Several simple patterns do seem to emerge, however. Our experience is that lower scores, particularly less than 100 at the start, are easier to gain control over. Scores of 50 or less, in fact, commonly can return to zero.Higher scores, particularly those >1000, are more difficult to slow or reduce, though we've done it many times. You'll generally have to try harder and it may take longer. It's not uncommon to not stop plaque growth with a starting score this high until your 2nd or 3rd year of effort.Sometimes it may take even longer. An occasional person requires four or five years to gain control. And there are, unfortunately, some people who never really gain complete control. They slow plaque growth compared to what it would have been with conventional efforts, but never completely halt growth. Why? Sometimes it's a matter of less than full commitment. Other times, we just don't know. Thankfully, these especially difficult cases are few and the majority enjoy substantial slowing or reversal.Since, in some people, success may take time, you've got to stick it out. Have you ever gotten lost in a strange city only to find out later that the place you were looking for was right around the corner? It can be the same way with stopping coronary plaque growth. If you start with a score of 1000 and, after two years of effort, you've only slowed growth to 11% per year and then give up in frustration, you may have missed the opportunity to have stopped growth entirely in your third year. All we can do is tip the scales heavily in your favor. We provide you with the best tools known. You've got to provide the commitment, the consistent effort of taking your supplements or medication, making the lifestyle changes, choosing the right foods and avoiding the wrong ones. But you've got to go the distance and not give up too easily.
What you need is an expert in health! Toggle navigation Home Blog Home Archive Join Now Log in Does staying up late make you fat? 3. March 2009 William Davis (5) Lack of sleep makes you crabby. But can staying up late make you fat? Or diabetic? Or increase heart disease risk? Can forcing your body to ignore its evolutionarily-programmed day-night/sleep-wakefulness cycle also distort health, even when sleep is adequate?Yet another study adds to the growing clinical literature documenting the lack of sleep, or, in this case, the "violation" of circadian rhythms that occurs with unpredictable or shifting sleep patterns.In this small study of 10 men and women, forcing them to sleep on an unnatural 28-hour per "day" schedule, causing a dyssynchrony with natural day-night cycles, yielded increased glucose (blood sugar) levels, poor response to insulin, increased blood pressure. It also led to a decrease in leptin levels, a phenomenon that can trigger increased appetite. Such circadian misalignment was meant to recreate the distorted day-night cycles of shift workers, a group that is unusually prone to diabetes and heart disease. This study further confirms that there are indeed unhealthy physiologic consequences of defying normal day-night sleep cycles. This study suggests that, not only is sufficient sleep important for health, but the predictability and concordance with normal circadian cycles is also important. Add to this previous studies demonstrating an association with sleep deprivation and low HDL/high triglycerides (Kaneita Y, et al 2008) and increased likelihood of having a positive heart scan (coronary calcium) score (King CR et al 2008), and it is increasingly clear that sleep is a crucial factor for overall health. It may even be a helpful strategy to control weight. A full report on the importance of sleep is planned for the Track Your Plaque website. Vitamin D Project: Grassroots Health 3. March 2009 Heart disease reversal is getting easier and easier 28. April 2006 William Davis (0) I've recently observed that more and more of our patients on the Track Your Plaque program seem to be stopping or reducing their heart scan scores. And they're doing it faster, in less time, and with larger drops in score.I'm not entirely sure why the sudden surge in success. However, I do wonder if adding therapeutic levels of vitamin D--at least in our generally sun-deprived Wisconsin participants--is responsible. However, we've also gotten a lot smarter on how to correct the parameters that seems to have outsized effects on plaque growth, especially small LDL. Yesterday alone, we had two people we added to our list of successes. One, an attorney, stopped his score in one year, with no change (compared to the expected increase of 30%). Another, a woman from the northeast, dropped her score 10% in one year. Her story is remarkable for beginning at a score >1000. In general, the higher your starting score, the longer it takes to stop or reduce it.These are just two examples. It seems to be happening at an accelerating pace.I can only hope that our surge in success (not 100%--yet!) will continue. But, every week, we're adding more and more people to our list of success stories. A used car lot on every street corner 28. April 2006 William Davis (0) Imagine that, every day, a parade of used-car salesmen knock on your front door to sell you a special "deal". Day in, day out they knock, expecting you to hear about their offers openly.Is there any doubt about their intentions or motives? Of course not. They're just trying to profit from selling you a car.That's how it is in a medical office nowadays. Drug representatives, 5, 6, or more each and every day, promoting drugs. Except that the profits from drugs are far greater than a used automobile, and there's a third party involved in the transaction: you.Today, a pushy representative came to my office. My staff and I tried to tell him that I was not interested in speaking to him. But he proved such a nuisance that I finally came out to tell him that I objected to the idea of drug reps just hanging around trying to hawk their wares.He blurted, "Doctor, do you have patients with angina? Our new drug, ranolazine, is perfect. Forget about nitroglycerin, beta blockers, and all that. Here's the latest study proving it's better." He tried to shove a reprint of the study at me.Getting to the bottom line, I asked, "What does it cost the patient?""Well, the co-pay is between $40 and $60. We're not yet well covered by insurance, so it'll cost patients around $200 a month."Need I say more? Here's a drug that does little more than help relieve anginal chest pains. It doesn't reverse coronary plaque. It won't avoid heart attack, death, or procedures. It just modestly cuts back on the frequency of chest pain. And all for the cost of a single heart scan--a heart scan that could have prevented the entire cascade of symptoms/procedures/medication/hospitalization etc.Hospitals, drug companies, medical device manufacturers. They're all businesses that thrive on your doctor's failure to detect and control your coronary plaque. Sometimes, even your doctor is part of this conspiracy to squeeze dollars out of human disease. Don't fall for it. Heart disease reversal at age 77 28. April 2006 William Davis (0) I met Agnes 18 months ago after she underwent a heart scan that revealed a scary score of over 1100. Although in her mid-70s, this was still a very high score. (Recall that a score this high carries a risk for heart attack and death of 25% per year.) Poor Agnes was a wreck over this unexpected result. "I can't sleep, I can't stop thinking about it!"She'd undergone the scan because her 44-year old son had a heart scan score of 2200! Unfortunately, he ended up with a bypass operation for very severe disease.Despite having been seeing a cardiologist in Boston for the last 8 years for a murmur, we uncovered multiple hidden lipoprotein patterns, many of which she shared with her son. Her most notable abnormalities were a low HDL and small LDL. Nearly 100% of all LDL particles were, in fact, small. This pattern also caused her LDL cholesterol to be underestimated by over 40%.18 months on the Track Your Plaque program and Agnes came into town to get a repeat scan. Her score was 10.2% lower. She'd learned to live with the idea that she had hidden heart disease missed by her doctor and cardiologist for many years. But knowledge of the substantial reversal she'd achieved in the 18 months on the program gave Agnes tremendous peace of mind.Agnes left the office with a big smile. If you need a reason to quit smoking... 26. April 2006 William Davis (0) If you've read Track Your Plaque, you already know my feelings about smoking and coronary plaque. Smoke, and you will lose the battle for control over coronary plaque growth--it will grow and grow until catastrophe strikes.Nonetheless, this is not sufficiently motivating for some people.If you need more motivation to quit smoking, just take a look at your heart scan sometime, accompanied by either one of the doctors or technicians at the scan center you choose. After you've had an opportunity to look at your coronary arteries, take a look at the lungs. The heart is in the middle and the lungs are the two large black areas on either side of the heart. (They're not really black; that's just the way the images are color-coded.)Smokers will see large cavities in their lungs--literally, half-inch to one-inch wide holes that contain only air. Many of them. These represent remnants of lung tissue, digested away and now useless from the damage incurred through smoking.Non-smokers should see uniform lung tissue without such cavities.What surprised me early on in my heart scan experience was how little smoking exposure was required to generate these cavities. A 40-year old, for instance, who smoked a half-pack per day for 10 years would have them. Heavier smokers, of course, showed far more extensive cavities.Officially, these cavities are called "emphysematous blebs", meaning the scars of the lung disease, emphysema.When I've pointed out these cavities or emphysematous blebs to patients, 9 out of 10 times they immediately become non-smokers. Commonly, they'd exclaim, "I had no idea I was really damaging my lungs!" Most admitted that they were awaiting some bona fide evidence that they were truly doing some harm to their bodies. Well, that's it.Give it a try if you're struggling. << Older posts Newer posts >> Newer posts12...115116117118119120121122123124Older posts m-Davis.html">William Davis (20) Most Heart Scan Blog readers already know: Your doctor has been brainwashed by the pharmaceutical industry. Your doctor more than likely has spent the better part of his or her career in the Guantanamo Bay of healthcare, water-boarded by seductive sales representatives, enticed with promises of fame and riches, threatened with ostracism from the clubby internal halls of healthcare if--gasp!--he or she didn't subscribe to the "rule" that only drugs are good, anything else is bad. The same FDA-approval-is-necessary-to-be-good brand of nonsense is gaining popularity among my colleagues who, having caught some mention (on the Today Show, Oprah, or similar source of medical information), hope to join the vitamin D hoopla.People will proudly declare that they are taking a high dose of vitamin D: 50,000 units once per week. No. They are taking a barely useful form: D2, ergocalciferol. Studies examining the reliability of the D2 form differ: There's the Heaney study suggesting that D2 is less effective than D3: Vitamin D2 is much less effective than vitamin D3 in humansThen there's the Holick study showing they are equivalent:Vitamin D2 is as effective as vitamin D3 in maintaining circulating concentrations of 25-hydroxyvitamin D.My experience is more in line with the Heaney study: Little or no real effect with D2. One particularly illustrative case I witnessed was a woman who was mistakenly prescribed D2 at 50,000 units per day. She told me that she'd been taking it for a year. I fully expected to see clear-cut signs of toxicity (e.g., high blood calcium levels). Curiously, she showed no signs of toxicity. Nor did she show any vitamin D at all in her blood: 25-hydroxy D level of zero--literally zero.I've witnessed similar phenomena several times: plenty of vitamin D2 . . . very little vitamin D in the blood. All in all, I suppose that D2 is better than No-D at all. But you are far better off joining the ranks of the pharmaceutically challenged and go with the stuff that really works: D3. D3, or cholecalciferol, yields confident increases in blood levels. It is inexpensive, safe, and an exact copy of the human form of vitamin D. (Of course, gelcap or drops only, NEVER tablets.) There is absolute NO reason to take vitamin D2, the form that sometimes works, sometimes doesn't, the facsimile plant form issued by the drug industry. Why don't stents prevent heart attack? 12. February 2009 William Davis (11) No study has ever documented that stents prevent future heart attack. But, in day-to-day practice, stents are frequently implanted for just this reason. A little clarification. Stents do prevent heart attack--if the heart attack is already underway, either as an "acute myocardial infarction" or "unstable angina." In other words, a plaque in a coronary artery can rupture just like a little volcano. Rather than spewing lava, the underlying plaque contents--fibrous tissue, inflammatory cells, cholesterol crystals, fatty material, debris--are exposed to flowing blood and trigger spasm of the artery and blood clot formation. A ruptured plaque is typically found in people who go to the emergency room with severe chest pain or have difficulty breathing. A heart catheterization is performed, a severe (e.g., 90-100%--completely closed) is found. A stent in this situation is of clear-cut benefit. What is not clearly beneficial is someone with no symptoms, symptoms only with physical activity that has been present for at least several months, or someone with a high heart scan score and no symptoms. In these circumstances, stent implantation does not reduce risk for future heart attack. Why?Take a look at this angiogram of a right coronary artery. You can seen plaque all along the artery (represented by areas that appear pinched off. There are at least 4 visible.) Putting one 15 millimeter stent in the artery will only affect the area of artery stented. (Stents vary in length, but typically are 12-18 millimeters in length.) The right coronary artery is about 10 times or more this length. There are also two other arteries of similar length. A stent at one location will do nothing to affect the potential for rupture in any of the other plaque-laden areas. Say a stent is implanted in the "worst" blockage in this right coronary artery, the plaque located at around 9 o'clock. What about all the other plaques? They can still rupture. Why not put in many stents, say, 4 or 5, and stent all the visible plaques? Two reasons: 1) Plaque you can't even see on an angiogram can still rupture, and 2) it is very costly (easily $30,000 at the very least), 3) incurs greater procedural risk, and 4) messes up the artery for future procedures, since a steel-lined artery that develops more disease in future will be more difficult to re-implant stents, bypass, or perform other procedural manipulations. The point: Putting in stents does not reduce potential for plaque rupture in the entire artery. What can prevent plaque rupture? That's the whole point of following an effective prevention program: prevent plaque rupture. (Of course, this discussion cannot encompass the wide variety of potential situations that may cause your doctor to individualize your approach. Nonetheless, when advised to have an elective heart procedure, a healthy dose of skepticism and is clearly a good practice.) Top image courtesy National Heart, Lung, and Blood Institute. << Older posts Newer posts >> Newer posts12...464748495051525354...123124Older posts
Does staying up late make you fat? 3. March 2009 William Davis (5) Lack of sleep makes you crabby. But can staying up late make you fat? Or diabetic? Or increase heart disease risk? Can forcing your body to ignore its evolutionarily-programmed day-night/sleep-wakefulness cycle also distort health, even when sleep is adequate?Yet another study adds to the growing clinical literature documenting the lack of sleep, or, in this case, the "violation" of circadian rhythms that occurs with unpredictable or shifting sleep patterns.In this small study of 10 men and women, forcing them to sleep on an unnatural 28-hour per "day" schedule, causing a dyssynchrony with natural day-night cycles, yielded increased glucose (blood sugar) levels, poor response to insulin, increased blood pressure. It also led to a decrease in leptin levels, a phenomenon that can trigger increased appetite. Such circadian misalignment was meant to recreate the distorted day-night cycles of shift workers, a group that is unusually prone to diabetes and heart disease. This study further confirms that there are indeed unhealthy physiologic consequences of defying normal day-night sleep cycles. This study suggests that, not only is sufficient sleep important for health, but the predictability and concordance with normal circadian cycles is also important. Add to this previous studies demonstrating an association with sleep deprivation and low HDL/high triglycerides (Kaneita Y, et al 2008) and increased likelihood of having a positive heart scan (coronary calcium) score (King CR et al 2008), and it is increasingly clear that sleep is a crucial factor for overall health. It may even be a helpful strategy to control weight. A full report on the importance of sleep is planned for the Track Your Plaque website.
Vitamin D Project: Grassroots Health 3. March 2009 Heart disease reversal is getting easier and easier 28. April 2006 William Davis (0) I've recently observed that more and more of our patients on the Track Your Plaque program seem to be stopping or reducing their heart scan scores. And they're doing it faster, in less time, and with larger drops in score.I'm not entirely sure why the sudden surge in success. However, I do wonder if adding therapeutic levels of vitamin D--at least in our generally sun-deprived Wisconsin participants--is responsible. However, we've also gotten a lot smarter on how to correct the parameters that seems to have outsized effects on plaque growth, especially small LDL. Yesterday alone, we had two people we added to our list of successes. One, an attorney, stopped his score in one year, with no change (compared to the expected increase of 30%). Another, a woman from the northeast, dropped her score 10% in one year. Her story is remarkable for beginning at a score >1000. In general, the higher your starting score, the longer it takes to stop or reduce it.These are just two examples. It seems to be happening at an accelerating pace.I can only hope that our surge in success (not 100%--yet!) will continue. But, every week, we're adding more and more people to our list of success stories. A used car lot on every street corner 28. April 2006 William Davis (0) Imagine that, every day, a parade of used-car salesmen knock on your front door to sell you a special "deal". Day in, day out they knock, expecting you to hear about their offers openly.Is there any doubt about their intentions or motives? Of course not. They're just trying to profit from selling you a car.That's how it is in a medical office nowadays. Drug representatives, 5, 6, or more each and every day, promoting drugs. Except that the profits from drugs are far greater than a used automobile, and there's a third party involved in the transaction: you.Today, a pushy representative came to my office. My staff and I tried to tell him that I was not interested in speaking to him. But he proved such a nuisance that I finally came out to tell him that I objected to the idea of drug reps just hanging around trying to hawk their wares.He blurted, "Doctor, do you have patients with angina? Our new drug, ranolazine, is perfect. Forget about nitroglycerin, beta blockers, and all that. Here's the latest study proving it's better." He tried to shove a reprint of the study at me.Getting to the bottom line, I asked, "What does it cost the patient?""Well, the co-pay is between $40 and $60. We're not yet well covered by insurance, so it'll cost patients around $200 a month."Need I say more? Here's a drug that does little more than help relieve anginal chest pains. It doesn't reverse coronary plaque. It won't avoid heart attack, death, or procedures. It just modestly cuts back on the frequency of chest pain. And all for the cost of a single heart scan--a heart scan that could have prevented the entire cascade of symptoms/procedures/medication/hospitalization etc.Hospitals, drug companies, medical device manufacturers. They're all businesses that thrive on your doctor's failure to detect and control your coronary plaque. Sometimes, even your doctor is part of this conspiracy to squeeze dollars out of human disease. Don't fall for it. Heart disease reversal at age 77 28. April 2006 William Davis (0) I met Agnes 18 months ago after she underwent a heart scan that revealed a scary score of over 1100. Although in her mid-70s, this was still a very high score. (Recall that a score this high carries a risk for heart attack and death of 25% per year.) Poor Agnes was a wreck over this unexpected result. "I can't sleep, I can't stop thinking about it!"She'd undergone the scan because her 44-year old son had a heart scan score of 2200! Unfortunately, he ended up with a bypass operation for very severe disease.Despite having been seeing a cardiologist in Boston for the last 8 years for a murmur, we uncovered multiple hidden lipoprotein patterns, many of which she shared with her son. Her most notable abnormalities were a low HDL and small LDL. Nearly 100% of all LDL particles were, in fact, small. This pattern also caused her LDL cholesterol to be underestimated by over 40%.18 months on the Track Your Plaque program and Agnes came into town to get a repeat scan. Her score was 10.2% lower. She'd learned to live with the idea that she had hidden heart disease missed by her doctor and cardiologist for many years. But knowledge of the substantial reversal she'd achieved in the 18 months on the program gave Agnes tremendous peace of mind.Agnes left the office with a big smile. If you need a reason to quit smoking... 26. April 2006 William Davis (0) If you've read Track Your Plaque, you already know my feelings about smoking and coronary plaque. Smoke, and you will lose the battle for control over coronary plaque growth--it will grow and grow until catastrophe strikes.Nonetheless, this is not sufficiently motivating for some people.If you need more motivation to quit smoking, just take a look at your heart scan sometime, accompanied by either one of the doctors or technicians at the scan center you choose. After you've had an opportunity to look at your coronary arteries, take a look at the lungs. The heart is in the middle and the lungs are the two large black areas on either side of the heart. (They're not really black; that's just the way the images are color-coded.)Smokers will see large cavities in their lungs--literally, half-inch to one-inch wide holes that contain only air. Many of them. These represent remnants of lung tissue, digested away and now useless from the damage incurred through smoking.Non-smokers should see uniform lung tissue without such cavities.What surprised me early on in my heart scan experience was how little smoking exposure was required to generate these cavities. A 40-year old, for instance, who smoked a half-pack per day for 10 years would have them. Heavier smokers, of course, showed far more extensive cavities.Officially, these cavities are called "emphysematous blebs", meaning the scars of the lung disease, emphysema.When I've pointed out these cavities or emphysematous blebs to patients, 9 out of 10 times they immediately become non-smokers. Commonly, they'd exclaim, "I had no idea I was really damaging my lungs!" Most admitted that they were awaiting some bona fide evidence that they were truly doing some harm to their bodies. Well, that's it.Give it a try if you're struggling. << Older posts Newer posts >> Newer posts12...115116117118119120121122123124Older posts
A used car lot on every street corner 28. April 2006 William Davis (0) Imagine that, every day, a parade of used-car salesmen knock on your front door to sell you a special "deal". Day in, day out they knock, expecting you to hear about their offers openly.Is there any doubt about their intentions or motives? Of course not. They're just trying to profit from selling you a car.That's how it is in a medical office nowadays. Drug representatives, 5, 6, or more each and every day, promoting drugs. Except that the profits from drugs are far greater than a used automobile, and there's a third party involved in the transaction: you.Today, a pushy representative came to my office. My staff and I tried to tell him that I was not interested in speaking to him. But he proved such a nuisance that I finally came out to tell him that I objected to the idea of drug reps just hanging around trying to hawk their wares.He blurted, "Doctor, do you have patients with angina? Our new drug, ranolazine, is perfect. Forget about nitroglycerin, beta blockers, and all that. Here's the latest study proving it's better." He tried to shove a reprint of the study at me.Getting to the bottom line, I asked, "What does it cost the patient?""Well, the co-pay is between $40 and $60. We're not yet well covered by insurance, so it'll cost patients around $200 a month."Need I say more? Here's a drug that does little more than help relieve anginal chest pains. It doesn't reverse coronary plaque. It won't avoid heart attack, death, or procedures. It just modestly cuts back on the frequency of chest pain. And all for the cost of a single heart scan--a heart scan that could have prevented the entire cascade of symptoms/procedures/medication/hospitalization etc.Hospitals, drug companies, medical device manufacturers. They're all businesses that thrive on your doctor's failure to detect and control your coronary plaque. Sometimes, even your doctor is part of this conspiracy to squeeze dollars out of human disease. Don't fall for it.
Heart disease reversal at age 77 28. April 2006 William Davis (0) I met Agnes 18 months ago after she underwent a heart scan that revealed a scary score of over 1100. Although in her mid-70s, this was still a very high score. (Recall that a score this high carries a risk for heart attack and death of 25% per year.) Poor Agnes was a wreck over this unexpected result. "I can't sleep, I can't stop thinking about it!"She'd undergone the scan because her 44-year old son had a heart scan score of 2200! Unfortunately, he ended up with a bypass operation for very severe disease.Despite having been seeing a cardiologist in Boston for the last 8 years for a murmur, we uncovered multiple hidden lipoprotein patterns, many of which she shared with her son. Her most notable abnormalities were a low HDL and small LDL. Nearly 100% of all LDL particles were, in fact, small. This pattern also caused her LDL cholesterol to be underestimated by over 40%.18 months on the Track Your Plaque program and Agnes came into town to get a repeat scan. Her score was 10.2% lower. She'd learned to live with the idea that she had hidden heart disease missed by her doctor and cardiologist for many years. But knowledge of the substantial reversal she'd achieved in the 18 months on the program gave Agnes tremendous peace of mind.Agnes left the office with a big smile.
If you need a reason to quit smoking... 26. April 2006 William Davis (0) If you've read Track Your Plaque, you already know my feelings about smoking and coronary plaque. Smoke, and you will lose the battle for control over coronary plaque growth--it will grow and grow until catastrophe strikes.Nonetheless, this is not sufficiently motivating for some people.If you need more motivation to quit smoking, just take a look at your heart scan sometime, accompanied by either one of the doctors or technicians at the scan center you choose. After you've had an opportunity to look at your coronary arteries, take a look at the lungs. The heart is in the middle and the lungs are the two large black areas on either side of the heart. (They're not really black; that's just the way the images are color-coded.)Smokers will see large cavities in their lungs--literally, half-inch to one-inch wide holes that contain only air. Many of them. These represent remnants of lung tissue, digested away and now useless from the damage incurred through smoking.Non-smokers should see uniform lung tissue without such cavities.What surprised me early on in my heart scan experience was how little smoking exposure was required to generate these cavities. A 40-year old, for instance, who smoked a half-pack per day for 10 years would have them. Heavier smokers, of course, showed far more extensive cavities.Officially, these cavities are called "emphysematous blebs", meaning the scars of the lung disease, emphysema.When I've pointed out these cavities or emphysematous blebs to patients, 9 out of 10 times they immediately become non-smokers. Commonly, they'd exclaim, "I had no idea I was really damaging my lungs!" Most admitted that they were awaiting some bona fide evidence that they were truly doing some harm to their bodies. Well, that's it.Give it a try if you're struggling.
Why don't stents prevent heart attack? 12. February 2009 William Davis (11) No study has ever documented that stents prevent future heart attack. But, in day-to-day practice, stents are frequently implanted for just this reason. A little clarification. Stents do prevent heart attack--if the heart attack is already underway, either as an "acute myocardial infarction" or "unstable angina." In other words, a plaque in a coronary artery can rupture just like a little volcano. Rather than spewing lava, the underlying plaque contents--fibrous tissue, inflammatory cells, cholesterol crystals, fatty material, debris--are exposed to flowing blood and trigger spasm of the artery and blood clot formation. A ruptured plaque is typically found in people who go to the emergency room with severe chest pain or have difficulty breathing. A heart catheterization is performed, a severe (e.g., 90-100%--completely closed) is found. A stent in this situation is of clear-cut benefit. What is not clearly beneficial is someone with no symptoms, symptoms only with physical activity that has been present for at least several months, or someone with a high heart scan score and no symptoms. In these circumstances, stent implantation does not reduce risk for future heart attack. Why?Take a look at this angiogram of a right coronary artery. You can seen plaque all along the artery (represented by areas that appear pinched off. There are at least 4 visible.) Putting one 15 millimeter stent in the artery will only affect the area of artery stented. (Stents vary in length, but typically are 12-18 millimeters in length.) The right coronary artery is about 10 times or more this length. There are also two other arteries of similar length. A stent at one location will do nothing to affect the potential for rupture in any of the other plaque-laden areas. Say a stent is implanted in the "worst" blockage in this right coronary artery, the plaque located at around 9 o'clock. What about all the other plaques? They can still rupture. Why not put in many stents, say, 4 or 5, and stent all the visible plaques? Two reasons: 1) Plaque you can't even see on an angiogram can still rupture, and 2) it is very costly (easily $30,000 at the very least), 3) incurs greater procedural risk, and 4) messes up the artery for future procedures, since a steel-lined artery that develops more disease in future will be more difficult to re-implant stents, bypass, or perform other procedural manipulations. The point: Putting in stents does not reduce potential for plaque rupture in the entire artery. What can prevent plaque rupture? That's the whole point of following an effective prevention program: prevent plaque rupture. (Of course, this discussion cannot encompass the wide variety of potential situations that may cause your doctor to individualize your approach. Nonetheless, when advised to have an elective heart procedure, a healthy dose of skepticism and is clearly a good practice.) Top image courtesy National Heart, Lung, and Blood Institute.