Choline requirements/recommendations

Recommended dietary allowances for a male adult (daily intake, in foods and food supplements) of some nutrients, usually the amounts estimated as needed to prevent overt manifestation of deficiency disease in most persons. For the substances listed in smaller amounts the optimum intake, leading to the best of health, may be somewhat greater. Not shown, but probably or possibly required, are the essential fatty acids, />aminobenzoic acid, choline, vitamin D, vitamin K, chromium, manganese, cobalt, nickel, zinc, selenium, molybdenum, vanadium, tin, and silicon. 

RECOMMENDED DAILY ALLOWANCE OF CHOLINE. Experimental deficiency of choline in humans has not been produced. Of course, methionine can completely eliminate the mammalian requirements for choline, but not those for young birds. 

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