The neurotoxicity of statin drugs are back in the news. Following on the heels of the FDA decision earlier this year to require statin drugs manufacturers to add "memory loss" as a side effect of this chemical class, a new study in published in the Journal of Diabetes reveals a clear association between statin use and peripheral neuropathy in a US population 40 years of age and older.
The study found "The prevalence of peripheral neuropathy was significantly higher among those who used statins compared to those who did not (23.5% vs. 13.5%; p < 0.01)," which is a 75% increase in relative risk.
Case reports of statin-induced peripheral neuropathy have existed in the medical literature for over 15 years.[i] Now, larger human studies are confirming that statin drugs do damage to the peripheral nerves. Moreover, much of the damage is occurring below the threshold of clinical surveillance, silently causing harm in unsuspecting patients.
For example, in 2011, the results of a 36-month prospective clinical and neurophysiological follow-up of patients treated with statins over 3 years was published in the journal Neuro Endocrinology Letters, revealed in forty-two patients that despite the fact that they did not report subjective symptoms typical for peripheral neuropathy, damage was occurring.[ii] They concluded: "The study confirmed that long-term treatment with statins caused a clinically silent but still definite damage to peripheral nerves when the treatment lasts longer than 2 years." Click the hyperlink to view all 9 studies on statin-induced peripheral neuropathy on Greenmedinfo.com. Or, view an even more sizeable dataset (54 studies) on statin-associated neurotoxicity.
While this research is adding to a growing awareness of the nerve-damaging properties of statins, this side effect is just the tip of a massive iceberg of under reported deleterious effects. For example, our project has identified 314 possible adverse effects of statins thus far. Conversely, we have identified a wide range of health benefits of cholesterol, running diametrically opposed to the over-simplification inherent in the cholesterol hypothesis (some say "cholesterol myth") of heart disease causation.
For those who are interested in learning more about natural cholesterol modulating substances, or better, yet the wider array of research relevant to cardiovascular health, visit our Health Guide: Heart Health.
- [i] T Phan, J G McLeod, J D Pollard, O Peiris, A Rohan, J P Halpern. Peripheral neuropathy associated with simvastatin. J Neurol Neurosurg Psychiatry. 1995 May ;58(5):625-8. PMID: 7745415
- [ii] Pavel Otruba, Petr Kanovsky, Petr Hlustik. Treatment with statins and peripheral neuropathy: results of 36-months a prospective clinical and neurophysiological follow-up. Neuro Endocrinol Lett. 2011 Sep 3 ;32(5):688-690. Epub 2011 Sep 3. PMID: 22167150