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Showing posts with label primary prevention. Show all posts
Showing posts with label primary prevention. Show all posts

Friday, May 26, 2017

The Elderly on Primary-Prevention Statins: No Survival Gains in ALLHAT - Medscape

The Elderly on Primary-Prevention Statins: No Survival Gains in ALLHAT

CHICAGO, IL — Statins for primary prevention do not lower the risk of death, whether cardiovascular or from any cause, when given to people aged 65 years or older with CV risk factors, suggests a secondary analysis of a major trial that caused a stir 15 years ago[1].
The ALLHAT-LLT trial had randomized >10,000 people aged >55 with dyslipidemia and hypertension but no clinical heart disease to receive open-label pravastatin 40 mg/day or usual care. In its 2002 publication[2], the trial famously saw no significant mortality reduction for the statin after 6 years, nor an improvement in fatal or nonfatal coronary heart disease events.

The results were similar in the new post hoc analysis of the trial focusing on the 2867 participants aged 65 years and older, as a whole and by the two age groups 65 to 74 years and >75 years, according to a report published May 22, 2017 in JAMA Internal Medicine with lead author Dr Benjamin H Han (New York University Langone School of Medicine, NY).
Although no significant outcomes differences were seen between the two randomized groups in any of the age categories, there was a trend (P=0.07) for increased all-cause mortality on the statin in the oldest age group.

As Han pointed out for heartwire from Medscape, the overall trial had well-recognized limitations. For example, the statin was given on an open-label basis. Also, it has been long noted that the ALLHAT-LLT usual-care group could receive statins at the physicians' discretion, which could potentially blur any differences in treatment outcomes.

Calls for Caution

"I would be very cautious in drawing any real conclusions from this study, as the study was not specifically designed to study statins in older adults, so all of the analyses are underpowered. None of their major conclusions were statistically significant," according to Dr Ann Marie Navar (Duke Clinical Research Institute, Durham, NC), who isn't connected with the ALLHAT-LLT report.
"Most statin trials have shown no difference in mortality, but [they showed] that statins do reduce the risk of coronary heart disease, a trend also seen in this secondary analysis," Navar told heartwire by email.


"The trend toward increasing mortality is certainly provocative but really needs to be explored in a trial specifically designed to test this issue."
The post hoc analysis included 1467 participants who had been randomized to pravastatin; their mean age was 71.3, and 48% were women. Their mean LDL-C level was 147.7 mg/dL at baseline and 109.1 mg/dL after 6 years.
The 1400 participants in the usual-care group had a mean age of 71.2 years, and 51% were female. Their mean LDL-C level was 147.6 mg/dL at baseline and 128.8 mg/dL after 6 years.
For all patients over the age of 65 who took pravastatin, the hazard ratio for all-cause mortality was 1.18 (95% CI 0.97–1.42, P=0.09) compared with the usual-care group. It was 1.08 (95% CI 0.85–1.37, P=0.55) for the 65–74 group and 1.34 (95% CI 0.98-1.84 P=0.07) for those aged 75 and older. Nor were there significant HRs for the secondary CHD end points.

In multivariate analysis, the corresponding HRs were 1.15 (95% CI 0.94–1.39) for 65 and older, 1.05 (95% CI 0.82–1.33) for those 65 to 74, and 1.36 (95% CI, 0.98-1.89) for 75 and older. The prospectively defined covariates included age, sex, race/ethnicity, primary-prevention aspirin use, smoking history, type 2 diabetes, body mass index, and systolic and diastolic blood pressures.

The Issues
"We are seeing a lot more older adults being put on statins for primary prevention, but the problem is, the evidence for doing so is limited," Han said.

"As geriatricians, we emphasize that treatment recommendations really need to be individualized with patients and need to also take into account not just what their cardiovascular risk is, but what their life expectancy is, what other competing risks they may have, and what their functional status and everyday activities are," Han observed.
Moreover, "for older adults, taking another medicine every day for the rest of your life isn't a small thing, especially if you have other chronic conditions, and right now we don't have any evidence that there's any benefit to doing so if you do not have any history of cardiovascular disease."

An editor's note accompanying the ALLHAT-LLC report points out the potential risks of extending statins to groups that may be unlikely to benefit clinically[3]. For example, statin therapy may be associated with myopathy, myalgias, muscle weakness, and arthropathies, notes Dr Gregory Curfman (Harvard Medical School, Boston, MA).

"These disorders may be particularly problematic in older people and may contribute to physical deconditioning and frailty. Statins have also been associated with cognitive dysfunction, which may further contribute to reduced functional status, risk of falls, and disability," he writes.
"The combination of these multiple risks and the ALLHAT-LLT data showing that statin therapy in older adults may be associated with an increased mortality rate should be considered before prescribing or continuing statins for patients in this age category."

Is There a "Point of No Return"?

"It takes decades for the plaque to build up in the arteries that eventually causes strokes and heart attacks. Data from thousands of adults studied in clinical trials show us that statins, when started early, can interrupt or slow down that process," according to Navar.

But, "we don't know if there is a 'point of no return' where it's too late to start a statin, and ALLHAT was not designed to answer that question. We need a large randomized trial to really know how effective statins are when started in older adults without cardiovascular disease," she said.
"There is a lot of negative press about statins, and I really worry about the effect of studies like these on the public's perception. This study was a secondary analysis of a trial that was not designed to study the effect of statins in older adults," Navar observed.

"Data from thousands of adults in multiple randomized trials have shown that statins prevent heart disease and do not kill people. I hope that the media, in the never-ending search for clickbait, doesn't overemphasize the statistically nonsignificant mortality trend and lead people who are known to benefit to discontinue their statins."

The study was funded by the National Heart Lung & Blood Institute. Study medications were contributed by Pfizer, AstraZeneca, and Bristol-Myers Squibb, and financial support was provided by Pfizer. The study authors and Curfman report no relevant financial relationships. Navar reported research support from the National Institutes of Health, Amgen, and Sanofi & Regeneron Pharmaceuticals and serving as a consultant for Amgen and Sanofi.

Read the full article here.

Wednesday, February 12, 2014

Statins for the primary prevention of cardiovascular disease - BMJ

Statins for the primary prevention of cardiovascular disease


"The reason why statin treatment may result in cancer is probably not an effect of the drug, but that low cholesterol predisposes to cancer. Thus, nine cohort studies including more than 140 000 individuals found that cancer was inversely associated with cholesterol measured 10–30 years earlier, and the association persisted after exclusion of cancer cases appearing during the first 4 year."

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Read the complete article here.

Sunday, June 10, 2012

The truth about statin drugs - Kresser


pills and bills Statins have been almost universally hailed as “wonder drugs” by medical authorities around the world. The market for statins was $26 billion in 2005, and sales for Lipitor alone reached $14 billion in 2006. Merck and Bristol Myers-Squib are actively seeking “over-the-counter” (OTC) status for their statin drugs. Statins are prescribed to men and women, children and the elderly, people with heart disease and people without heart disease.

In fact, these drugs have a reputation for being so safe and effective that one UK physician, John Reckless (I’m not kidding – that’s actually his name!) has suggested that we put statins in the water supply.

That’s a bold suggestion, of course, and it begs the question: are statins really as safe and cost effective as mainstream medical authorities claim? The unequivocal answer is no.

Statins don’t increase survival in healthy people

Statins have never been shown to be effective in reducing the risk of death in people with no history of heart disease. No study of statins on this “primary prevention population” has ever shown reduced mortality in healthy men and women with only an elevated serum cholesterol level and no known coronary heart disease. (CMAJ. 2005 Nov 8;173(10):1207; author reply 1210.) In fact, an analysis of large, controlled trials prior to 2000 found that long-term use of statins for primary prevention of CHD produced a 1% greater risk of death over 10 years compared to placebo.

Statins don’t increase survival in women

Despite the fact that around half of the millions of statin prescriptions written each year are handed to female patients, these drugs show no overall mortality benefit regardless of whether they are used for primary prevention (women with no history of heart disease) or secondary prevention (women with pre-existing heart disease). In women without coronary heart disease (CHD), statins fail to lower both CHD and overall mortality, while in women with CHD, statins do lower CHD mortality but increase the risk of death from other causes, leaving overall mortality unchanged. (JAMA study)

Statins don’t increase survival in the elderly

The only statin study dealing exclusively with seniors, the PROSPER trial, found that pravastatin did reduce the incidence of coronary mortality (death from heart disease). However, this decrease was almost entirely negated by a corresponding increase in cancer deaths. As a result, overall mortality between the pravastatin and placebo groups after 3.2 years was nearly identical.

This is a highly significant finding since the rate of heart disease in 65-year old men is ten times higher than it is in 45-year old men. The vast majority of people who die from heart disease are over 65, and there is no evidence that statins are effective in this population.

Do statins work for anyone?

Among people with CHD or considered to be at high risk for CHD, the effect of statins on the incidence of CHD mortality ranges from virtually none (in the ALLHAT trial) to forty-six percent (the LIPS trial). The reduction in total mortality from all causes ranges from none (the ALLHAT trial) to twenty-nine percent (the 4S trial).

However, the use of statins in this population is not without considerable risk. Statins frequently produce muscle weakness, lethargy, liver dysfunction and cognitive disturbances ranging from confusion to transient amnesia. They have produced severe rhabdomyolysis that can lead to life-threatening kidney failure.

Aspirin just as effective as statins (and 20x cheaper!)

Perhaps the final nail in the coffin for statins is that a recent study in the British Medical Journal showed that aspirin is just as effective as statins for treating heart disease in secondary prevention populations – and 20 times more cost effective! Aspirin is also far safer than statins are, with fewer adverse effects, risks and complications.

The bottom line

  1. Statin drugs do not reduce the risk of death in 95% of the population, including healthy men with no pre-existing heart disease, women of any age, and the elderly.
  2. Statin drugs do reduce mortality for young and middle-aged men with pre-existing heart disease, but the benefit is small and not without significant adverse effects, risks and costs.
  3. Aspirin works just as well as statins do for preventing heart disease, and is 20 times more cost effective.
So what if you are at risk for heart disease and you’d prefer not to take a statin? Other than aspirin, there are many clinically proven ways to prevent heart disease involving simple adjustments to diet and lifestyle. In fact, the recent INTERHEART study which looked at the incidence of heart disease in 52 countries revealed that over 90% of heart disease is preventable by diet and lifestyle modifications.

I’ll discuss these natural methods of preventing heart disease in my next post. Stay tuned!

Recommended links

Wednesday, June 30, 2010

News regarding statins.

Clare McHarris posted the following on the Stopped Out Statins Yahoo group which I pasted in its entirety here. Thank You Clare!

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News regarding statins. The latest studies in the Archives of Internal Medicine are not supportive of statins. This was released today. Please read the two abstracts below.


Statins and All-Cause Mortality in High-Risk Primary Prevention
A Meta-analysis of 11 Randomized Controlled Trials Involving 65 229 Participants (click here)


Kausik K. Ray, MD, MPhil, FACC, FESC; Sreenivasa Rao Kondapally Seshasai, MD, MPhil; Sebhat Erqou, MD, MPhil, PhD; Peter Sever, PhD, FRCP, FESC; J. Wouter Jukema, MD, PhD; Ian Ford, PhD; Naveed Sattar, FRCPath


Arch Intern Med. 2010;170(12):1024-1031.

Background Statins have been shown to reduce the risk of all-cause mortality among individuals with clinical history of coronary heart disease. However, it remains uncertain whether statins have similar mortality benefit in a high-risk primary prevention setting. Notably, all systematic reviews to date included trials that in part incorporated participants with prior cardiovascular disease (CVD) at baseline. Our objective was to reliably determine if statin therapy reduces all-cause mortality among intermediate to high-risk individuals without a history of CVD.

Data Sources Trials were identified through computerized literature searches of MEDLINE and Cochrane databases (January 1970-May 2009) using terms related to statins, clinical trials, and cardiovascular end points and through bibliographies of retrieved studies.

Study Selection Prospective, randomized controlled trials of statin therapy performed in individuals free from CVD at baseline and that reported details, or could supply data, on all-cause mortality.

Data Extraction Relevant data including the number of patients randomized, mean duration of follow-up, and the number of incident deaths were obtained from the principal publication or by correspondence with the investigators.

Data Synthesis Data were combined from 11 studies and effect estimates were pooled using a random-effects model meta-analysis, with heterogeneity assessed with the I2 statistic. Data were available on 65 229 participants followed for approximately 244 000 person-years, during which 2793 deaths occurred. The use of statins in this high-risk primary prevention setting was not associated with a statistically significant reduction (risk ratio, 0.91; 95% confidence interval, 0.83-1.01) in the risk of all-cause mortality. There was no statistical evidence of heterogeneity among studies (I2 = 23%; 95% confidence interval, 0%-61% [P = .23]).

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Cholesterol Lowering, Cardiovascular Diseases, and the Rosuvastatin-JUPITER Controversy
A Critical Reappraisal
(click here)

Michel de Lorgeril, MD; Patricia Salen, BSc; John Abramson, MD; Sylvie Dodin, MD; Tomohito Hamazaki, PhD; Willy Kostucki, MD; Harumi Okuyama, PhD; Bruno Pavy, MD; Mikael Rabaeus, MD


Arch Intern Med. 2010;170(12):1032-1036.

Background Among the recently reported cholesterol-lowering drug trials, the JUPITER (Justification for the Use of Statins in Primary Prevention) trial is unique: it reports a substantial decrease in the risk of cardiovascular diseases among patients without coronary heart disease and with normal or low cholesterol levels.

Methods Careful review of both results and methods used in the trial and comparison with expected data.

Results The trial was flawed. It was discontinued (according to prespecified rules) after fewer than 2 years of follow-up, with no differences between the 2 groups on the most objective criteria. Clinical data showed a major discrepancy between significant reduction of nonfatal stroke and myocardial infarction but no effect on mortality from stroke and myocardial infarction. Cardiovascular mortality was surprisingly low compared with total mortality—between 5% and 18%—whereas the expected rate would have been close to 40%. Finally, there was a very low case-fatality rate of myocardial infarction, far from the expected number of close to 50%. The possibility that bias entered the trial is particularly concerning because of the strong commercial interest in the study.

Conclusion The results of the trial do not support the use of statin treatment for primary prevention of cardiovascular diseases and raise troubling questions concerning the role of commercial sponsors.