Posts Tagged ‘herbs’

The case against antioxidants

Posted 13 Mar 2011 — by Todd
Category Diet, Health, Hormesis

Antioxidant supplements are probably ineffective.  They may even be hazardous to your health.

Many people take daily supplements that include antioxidants such as Vitamins A, C, and E; beta carotene, coenzyme Q10, and alpha lipoic acid. I used to be one of them, convinced of the theory that supplementation with antioxidants is an effective way to neutralize harmful free radicals.  These free radicals, also called ROS or “reactive oxygen species”, can cause oxidative damage to cells and organs, and have been implicated in the pathogenesis of degenerative diseases such as cancer, heart disease, and Alzheimer’ disease.

However, study after study not only fails to show a consistent benefit, but in many cases documents positive harm from taking antioxidants. While I continue to believe that antioxidant supplementation is helpful in certain isolated cases of acute infection, tissue damage, or a damaged or aged metabolism, for most of us antioxidants are probably worthless. In fact, antioxidant supplements can interfere with and weaken the body’s inherent ability to mount an effective defense against oxidative damage and its contribution toward degenerative diseases.

I’ve resisted this conclusion because I could not make sense of it.  That is…until I came across recent research into the biochemistry and genetic regulation of the antioxidant response element (ARE). Fortunately the ARE provides us with an in-built adaptive stress response that combats oxidative stress and inflammation The ARE makes the need for antioxidants in the diet unnecessary — other than to keep our food fresh. Surprisingly, antioxidant supplements can impair our adaptive stress response.  But there’s much we can do to strengthen this response. Read More