New Research on Vitamin C

Article excerpt

Three recent studies investigated the relationship between vitamin C and lead levels in blood. One study by Dr. Y. Cheng and colleagues at Harvard, published in the American Journal of Epidemiology in 1998, found that older men who bad the highest intake of vitamin C (more than 339 mg/day) had a lower level of lead in their blood than did men whose intake of vitamin C was less than 109 mg/day. Another study, published in the Journal of the American Medical Association in June by Drs. J. Simon and E. Hudes of the University of California, San Francisco, found that adults with the highest levels of vitamin C in serum had much lower levels of lead in their blood. The third study,, reported in The Journal of the American College of Nutrition in 1999 by Dr. E. Dawson and colleagues at the University of Texas Medical Branch, Galveston, determined that supplementation with 1,000 mg/day of vitamin C in adult male smokers reduced blood lead levels by 81% after only one week, but that a dose of 200 mg/day of vitamin C had little effect. …