... most ultratrace elements, although selenium, chromium, and iodine are clearly essential (Chap 335) Molybdenum is necessary for the activity of sulfite and xanthine oxidase, and molybdenum deficiency ... manganese have been reported to result in bone demineralization, poor growth, ataxia, disturbances in carbohydrate and lipid metabolism, and convulsions Ultratrace elements are defined as those needed ... Meta-analysis: High-dosage vitamin E supplementation may increase all-cause mortality Ann Intern Med 142:37, 2005 [PMID: 15537682] Morris MC et al: Dietary folate and vitamin B12 intake and cognitive decline...