A study in the American Journal of Epidemiology in June 2005
(162(2):157-16found that low chromium levels are associated
with an increase risk for myocardial infarction. The researchers
actually measured chromium in toenail clippings because they
found that it better assessed long term chromium intake over a
blood test. Findings indicate that among 1,400 men, those who
suffered a heart attack had chromium levels about 15% lower than
those who did not. In addition, those with higher levels of
chromium had fewer heart attacks.