This
is a contribution from members of THINCS, To The Editor The following is in response to articles in the March 5
2008 issue of JAMA. This is an important issue in view of the millions of
patients on statins and recent evidence that their benefits have been
exaggerated and significant adverse side effects suppressed. There is much
more that could be said as well as additional supportive references that
could be cited and I have tried to supply as much information as possible to
conform with the rules for Letters to the Editor. I have no conflicts of interest or financial
disclosures to report. As indicated, the word count is 285 and I have
appended my contact information. If anything else is required, please let me
know. Sincerely yours, Neuropathy, Memory Loss
And Statins To The Editor: The discussion of peripheral
neuropathy by Torpy and colleagues1 does not list statins as a
possible cause, nor does the accompanying case report by Brust of a patient
with memory loss and neuropathy include statins as a treatable cause of
dementia.2 Peripheral neuropathy due to statins has been
recognized for a decade and in one review of 166 patients, those taking
statins were over 14 times more likely to develop idiopathic peripheral
neuropathy than controls. This almost doubled to 26.4 for patients on
statins for two or more years.3 Despite this and other reports,
failure to include statins as a cause of neuropathy is also common in review
articles published in other respected journals.4 A Medwatch listing of Adverse Drug
Reactions reported for one statin (Lipitor) from 1998 to 2007 listed 547
cases of neuropathy and 662 cases of amnesia or memory loss. In view of the
claim that over 90 percent of adverse drug reactions are not reported and
evidence that more than two thirds of physicians dismiss complaints of
neuropathy as possibly being due to statins despite meeting the correct
criteria,5 the true incidence is undoubtedly much higher. This is
of particular concern in view of recommendations that all diabetics should
take statins, since the associated complication of neuropathy suggests that
diabetics would be at even greater risk. Recent Vigibase data from the WHO
Foundation Collaborating Centre for International Drug Monitoring in
Uppsala, Sweden reveals a disproportionately high incidence of upper motor
neuron disease associated with statins similar to that seen in amyotrophic
lateral sclerosis (ALS). Some of these patients also had peripheral
neuropathy and fronto-temporal dementia is seen in up to 50% of patients
diagnosed as having ALS. Paul J. Rosch,
MD References 1. Torpy JM, Kincaid JL. Glass RM. Peripheral
neuropathy. JAMA 2008;299(9):1096. And here comes the editor´s usual response: Dear Dr. |