Should You Take Statins?
How can you calculate your own personal heart disease risk to help you determine if you should start on a cholesterol-lowering statin drug?
The muscle-related side effects from cholesterol-lowering statins “are often severe enough for patients to stop taking the drug. Of course, these side effects could be coincidental or psychosomatic and have nothing to do with the drug,” given that many clinical trials show such side effects are rare. “It is also possible that previous clinical trials”—funded by the drug companies themselves—“under-recorded the side effects of statins.” The bottom line is that there’s an urgent need to establish the true incidence of statin side effects.
“What proportion of symptomatic side effects in patients taking statins are genuinely caused by the drug?” That’s the title of a journal article that reports that, even in trials funded by Big Pharma, “only a small minority of symptoms reported on statins are genuinely due to the statins,” and those taking statins are significantly more likely to develop type 2 diabetes than those randomized to placebo sugar pills. Why? We’re still not exactly sure, but statins may have the double-whammy effect of impairing insulin secretion from the pancreas while also diminishing insulin’s effectiveness by increasing insulin resistance.
Even short-term use of statins may “approximately double the odds of developing diabetes and diabetic complications.” As shown below and at 1:49 in my video Who Should Take Statins?, fewer people develop diabetes and diabetic complications off statins over a period of about five years than those who do develop diabetes while on statins. “Of more concern, this increased risk persisted for at least 5 years after statin use stopped.”
“In view of the overwhelming benefit of statins in the reduction of cardiovascular events,” the number one killer of men and women, any increase in risk of diabetes, our seventh leading cause of death, would be outweighed by any cardiovascular benefits, right? That’s a false dichotomy. We don’t have to choose between heart disease and diabetes. We can treat the cause of both with the same diet and lifestyle changes. The diet that can not only stop heart disease, but also reverse it, is the same one that can reverse type 2 diabetes. But what if, for whatever reason, you refuse to change your diet and lifestyle? In that case, what are the risks and benefits of starting statins? Don’t expect to get the full scoop from your doctor, as most seemed clueless about statins’ causal link with diabetes, so only a small fraction even bring it up with their patients.
“Overall, in patients for whom statin treatment is recommended by current guidelines, the benefits greatly outweigh the risks.” But that’s for you to decide. Before we quantify exactly what the risks and benefits are, what exactly are the recommendations of current guidelines?
How should you decide if a statin is right for you? “If you have a history of heart disease or stroke, taking a statin medication is recommended, without considering your cholesterol levels.” Period. Full stop. No discussion needed. “If you do not yet have any known cardiovascular disease,” then the decision should be based on calculating your own personal risk. If you know your cholesterol and blood pressure numbers, it’s easy to do that online with the American College of Cardiology risk estimator or the Framingham risk profiler.
My favorite is the American College of Cardiology’s estimator because it gives you your current ten-year risk and also your lifetime risk. So, for a person with a 5.8 percent risk of having a heart attack or stroke within the next decade, if they don’t clean up their act, that lifetime risk jumps to 46 percent, nearly a flip of the coin. If they improved their cholesterol and blood pressure, though, they could reduce that risk by more than tenfold, down to 3.9 percent, as shown below and at 4:11 in my video.
Since the statin decision is based on your ten-year risk, what do you do with that number? As you can see here and at 4:48 in my video, under the current guidelines, if your ten-year risk is under 5 percent, then, unless there are extenuating circumstances, you should just stick to diet, exercise, and smoking cessation to bring down your numbers. In contrast, if your ten-year risk hits 20 percent, then the recommendation is to add a statin drug on top of making lifestyle modifications. Unless there are risk-enhancing factors, the tendency is to stick with lifestyle changes if risk is less than 7.5 percent and to move towards adding drugs if above 7.5 percent.
Risk-enhancing factors that your doctor should take into account when helping you make the decision include a bad family history, really high LDL cholesterol, metabolic syndrome, chronic kidney or inflammatory conditions, or persistently high triglycerides, C-reactive protein, or LP(a). You can see the whole list here and at 4:54 in my video.
If you’re still uncertain, guidelines suggest you consider getting a coronary artery calcium (CAC) score, but even though the radiation exposure from that test is relatively low these days, the U.S. Preventive Services Task Force has explicitly concluded that the current evidence is insufficient to conclude that the benefits outweigh the harms.
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