Chromium intake, absorption and excretion of subjects consuming self-selected diets.
Chromium (Cr) content of the self-selected diets of 10 adult males and 22 females was determined. Each subject collected duplicate food and beverage samples on a daily basis for seven consecutive days. The 7-day average intake for males was 33 +/- 3 micrograms (mean +/- SEM), range 22-48 micrograms, and intake for females was 25 +/- 1, range 13-36. Mean Cr intake per 1000 cal was approximately 15 micrograms. Approximately 90% of the diets analyzed were below the minimum suggested safe and adequate daily intake for Cr of 50 micrograms. Chromium absorption was inversely related to dietary intake; absorption at a dietary Cr intake of 10 micrograms was approximately 2% and, with increasing intake to 40 micrograms, Cr absorption decreased to 0.5%. These data demonstrate that the average daily intake of chromium from self-selected diets is well below the minimum suggested safe and adequate intake and that Cr absorption, at levels found in typical US diets, is inversely related to dietary intake.
D000328:Adult; D000368:Aged; D001628:Beverages / Q000032:analysis; D002857:Chromium / Q000008:administration & dosage* / Q000378:metabolism / Q000652:urine; D004032:Diet; D005260:Female; D005504:Food Analysis; D006801:Humans; D007408:Intestinal Absorption; D008297:Male; D008875:Middle Aged; D009747:Nutritional Physiological Phenomena
D002857:Chromium