LETTER TO THE EDITOR – FEBRUARY 2001

I read that vitamin-C may cause artery thickening at 500 mg/day. Is this true? And is artery thickening desirable (thick, healthy, strong artery walls) or undesirable (hardening, clogging, high blood pressure, stroke, heart attack, etc.)?

PS, USA

Editor: I would like to refer you to the Linus Pauling Institute at the University of Oregon for answers to your questions. You can find their comments at osu.orst.edu/dept/ncs/newsarch/2000/Mar00/artery.htm.

I have personally taken 500 mg of vitamin C 3 times daily for at least the last 25 years and believe this amount to be safe and beneficial.