Re: Statins do NOT protect against Azlheimer's
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Re: Statins do NOT protect against Azlheimer's
| listener | 14 Feb 2005 23:32 |
> It seems to me I heard somewhere that Sharon Hope wrote in article > <vqudnTht2uLWYpLfRVn-iw@comcast.com>: [quoted text clipped - 46 lines] > will need to accept her positive statements (and there are quite a > few) as well as her negative ones. That will never happen. She filters out any positive statements, which is what makes her posts so disturbing.
L.
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| Don Kirkman | 14 Feb 2005 22:50 |
It seems to me I heard somewhere that Sharon Hope wrote in article <vqudnTht2uLWYpLfRVn-iw@comcast.com>:
>> It seems to me I heard somewhere that Zee wrote in article >> <1108234197.229913.277760@f14g2000cwb.googlegroups.com>:
>> {Statins, Alzheimer's, and strokes]
>>>statins, stroke and cognition: >>>http://www.geriatrictimes.com/g040618.html
>>>Second, the large trials enrolled people at high risk for >>>cardiovascular disease who experience benefit from statins to nonfatal [quoted text clipped - 7 lines] >>>nonfatal strokes was actually matched by a similar number of increased >>>fatal strokes.
>> You may be surprised to learn that Dr. Beatrice Golomb explains why >> statins may actually reduce the number of strokes; from a study she >> reported at a Conference in November, 2004: >> [http://www.atacand.com/index.asp?did=3430&aid=42076&l1=5&l2=1&mid=l2-5-1]
>> [Start] >> Dr. Golomb indicated that the study had limitations; for example, most [quoted text clipped - 7 lines] >> cerebrovascular disease. >> [End]
>I see you, too, now use Dr. Golomb as a credible source who is an expert in >statins - as does the AHA. No, that is not what you see. What you see is evidence that Dr. Golomb is not a statin warrior who can be trotted out whenever you need a spokesperson. Surely you realize that she is pointing out a *positive* effect of statins. If you accept her as an expert then you will need to accept her positive statements (and there are quite a few) as well as her negative ones.
 Signature Don "I do not feel obliged to believe that the same God who has endowed us with senses, reason, and intellect has intended us to forgo their use. --Galileo Galilei
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| Sharon Hope | 14 Feb 2005 01:31 |
> It seems to me I heard somewhere that Zee wrote in article > <1108234197.229913.277760@f14g2000cwb.googlegroups.com>: [quoted text clipped - 32 lines] > cerebrovascular disease. > [End] I see you, too, now use Dr. Golomb as a credible source who is an expert in statins - as does the AHA.
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| Don Kirkman | 13 Feb 2005 22:08 |
It seems to me I heard somewhere that Zee wrote in article <1108234197.229913.277760@f14g2000cwb.googlegroups.com>:
{Statins, Alzheimer's, and strokes]
>statins, stroke and cognition: >http://www.geriatrictimes.com/g040618.html
>Second, the large trials enrolled people at high risk for >cardiovascular disease who experience benefit from statins to nonfatal [quoted text clipped - 7 lines] >nonfatal strokes was actually matched by a similar number of increased >fatal strokes. You may be surprised to learn that Dr. Beatrice Golomb explains why statins may actually reduce the number of strokes; from a study she reported at a Conference in November, 2004: [http://www.atacand.com/index.asp?did=3430&aid=42076&l1=5&l2=1&mid=l2-5-1]
[Start] Dr. Golomb indicated that the study had limitations; for example, most patients were normotensive and the sample of hypertensive patients was of insufficient size to extrapolate these findings to that population. Furthermore, the effect of statins on blood pressure across various doses was not studied. Nevertheless, she concluded that statins could reduce blood pressure and that this effect could help to explain why several studies have reported that these agents can reduce the risk of stroke, despite cholesterol not being an important risk factor for cerebrovascular disease. [End]
 Signature Don "I do not feel obliged to believe that the same God who has endowed us with senses, reason, and intellect has intended us to forgo their use. --Galileo Galilei
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| Zee | 12 Feb 2005 19:02 |
> >>Another misleading subject line..... > [quoted text clipped - 23 lines] > > SBH What happens to those of us who took them for years is quite different from what happens in clincial trials. Frankie's husband for example would have been deemed a raging success 6 months out, two years out; and he is not alone. We hear from hundreds; we get corroboration from their physicians and the pattern is the same. Over and over and over. No; anecdote is not as good as fact. But it certainly raises question in any reasonable person.
statins, stroke and cognition: http://www.geriatrictimes.com/g040618.html
Second, the large trials enrolled people at high risk for cardiovascular disease who experience benefit from statins to nonfatal stroke, which may lead to improvements in cognition that may help to balance out harms to cognition from other mechanisms. Although there are trends toward increases in fatal stroke with statins in most of the large statin trials, those who have died cannot complete cognitive surveys. The impact on total number of strokes was unaffected in the PROSPER trial with its sole focus on the elderly population. In the PROSPER trial, the number of reduced transient ischemic attacks and nonfatal strokes was actually matched by a similar number of increased fatal strokes.
Finally, the HPS used what is termed an "active run-in." For six weeks, participants considered for enrollment were placed on simvastatin, and those who were not fully compliant were dropped from the study. Participants who perceived problems on the drug, including cognitive problems, may have dropped the study themselves or skipped pills intentionally. In addition, participants who developed memory problems may have had trouble remembering to take the pills even if they did not recognize deterioration in cognitive function. This run-in process may have excluded participants who developed cognitive problems on the drug, selecting only those who did not experience problems. Over one-third of those who were interested in enrolling were excluded following this compliance run-in.
Because statins reduce nonfatal stroke (and cognition is obviously not measured in people who have experienced fatal stroke), benefits by statins for cognitive function in those in whom a stroke was averted might be expected. It must be emphasized that the randomized trial evidence has, to date, uniformly failed to show cognitive benefits by statins and has supported no effect or frank and significant harm to cognitive function.
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Frisoni GB, Fratiglioni L, Fastbom J et al. (1999), Mortality in nondemented subjects with cognitive impairment: the influence of health-related factors. Am J Epidemiol 150(10):1031-1044.
Golomb BA, Kane T, Dimsdale JA (2004), Severe irritability associated with statin cholesterol-lowering drugs. QJM 97(4):229-235.
Golomb BA, Yang E, Denenberg J, Criqui M (2003), Statin-associated adverse events. P95. Presented at the 43rd Annual Conference on Cardiovascu
King DS, Jones DW, Wofford MR et al. (2001), Cognitive impairment associated with atorvastatin. Presented at the American College of Clinical Pharmacy Spring Practice and Research Forum. Salt Lake City; April 22-25.
King DS, Wilburn AJ, Wofford MR et al. (2003), Cognitive impairment associated with atorvastatin and simvastatin. Pharmacotherapy 23(12):1663-1667.
Korten AE, Jorm AF, Jiao Z et al. (1999), Health, cognitive, and psychosocial factors as predictors of mortality in an elderly community sample. J Epidemiol Community Health 53(2):83-88.
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| Sbharris[atsign]ix.netcom.com | 12 Feb 2005 18:20 |
>>Another misleading subject line..... The article makes it clear that there are conflicting studies: some show no protection against dementia, others do. Obviously, much more research is needed.
Who wouldn't hope that there *might* be some benefit from statins against this most debilitating disease, alzheimers? <<
COMMENT:
While we're visiting this subject, let us note that Alzheimer's is responsible for maybe half of dementia only. A large fraction of the other half is caused by mini-strokes and vascular disease. And of course, there's a 20 to 30% overlap of people who have both problems.
Of these, Alzheirmer's is the process I would LEAST expect statins to interfere with. They might, but they might not. However, statins have already show impressive anti-stroke capability, even in people with normal cholesterol levels. So if statins do not work in slowing or preventing progression of Alzheimer's, this in no way means we've ruled out their role in preventing "dementia."
SBH
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| listener | 11 Feb 2005 03:08 |
Another misleading subject line.....
The article makes it clear that there are conflicting studies: some show no protection against dementia, others do. Obviously, much more research is needed.
Who wouldn't hope that there *might* be some benefit from statins against this most debilitating disease, alzheimers?
L.
> Many of us who have been exposed first-hand to the devastating > cognitive adverse effects of statins have been tremendously skeptical [quoted text clipped - 72 lines] > > SOURCE: Archives of General Psychiatry, February 2005. |
| Sharon Hope | 11 Feb 2005 02:58 |
Many of us who have been exposed first-hand to the devastating cognitive adverse effects of statins have been tremendously skeptical of the "Can statins prevent Alz?????" headlines, which appeared at a time that conveniently offset articles in the popular media that exposed the memory loss caused by statins.
We doubters also questioned how the studies would differentiate between Alz and statin-induced memory loss.
As it turns out, this latest study shows that statins do NOT prevent Alzheimer's:
Statins Don't Protect Against Dementia: Study http://today.reuters.co.uk/news/newsArticle.aspx?type=healthNews&storyID=2005-02 -10T211401Z_01_B371082_RTRIDST_0_HEALTH-STATINS-DEMENTIA-DC.XML Reuters.uk, UK - 5 hours ago NEW YORK (Reuters Health) - The use of cholesterol-lowering drugs belonging to the statin family, such as Lipitor or Pravacol, does not seem to have any effect ...
Statins Don't Protect Against Dementia: Study http://www.reuters.com/newsArticle.jhtml?type=healthNews&storyID=7598600 Reuters - 5 hours ago NEW YORK (Reuters Health) - The use of cholesterol-lowering drugs belonging to the statin family, such as Lipitor or Pravacol, does not seem to have any effect ...
Statins Don't Protect Against Dementia: Study http://abcnews.go.com/Health/wireStory?id=488976 ABC News - 5 hours ago Feb 10, 2005 - NEW YORK (Reuters Health) - The use of cholesterol-lowering drugs belonging to the statin family, such as Lipitor or Pravacol, does not seem ...
Statins Don't Protect Against Dementia: Study Thu Feb 10, 2005 9:15 PM GMT
NEW YORK (Reuters Health) - The use of cholesterol-lowering drugs belonging to the statin family, such as Lipitor or Pravacol, does not seem to have any effect on the risk of dementia or Alzheimer's disease, according to findings from a new study.
This supports the results of another study, but run counter other study findings that have linked statin use with a reduced risk of dementia.
The current study involved elderly residents living in Cache County, Utah, who were evaluated for statin use and dementia between 1995 and 1997 and then again between 1998 and 2000.
Dr. John C. S. Breitner, from the VA Puget Sound Health Care System in Seattle, and colleagues report their findings in the Archives of General Psychiatry.
Of the 4,895 subjects evaluated at the initial assessment, 355 had dementia, including 200 with Alzheimer's disease. In this analysis, statin use was associated with a 56-percent reduction in risk of dementia.
During 3-year follow-up, 185 of 3308 at-risk survivors were diagnosed with dementia, including 104 with Alzheimer's disease. In this analysis, statin use at the start of the study or at follow-up had no effect on the risk of dementia or Alzheimer's disease.
One explanation for the different findings could be that after dementia sets in, patients may simply be less likely to use statins, along with other drugs.
Studies with sufficient statistical power are needed to assess the effect of statin use on dementia risk, the authors note. "Until such research is able to demonstrate more promising results, however, we suggest that costly randomized trials of statins are premature."
SOURCE: Archives of General Psychiatry, February 2005.
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