Medical Definition of Carotenoid

Reviewed on 6/3/2021

Carotenoid: One of a group of compounds that includes beta-carotene, alpha-carotene, and beta-cryptoxanthin which are converted to vitamin A and are referred to as provitamin A carotenoids. The sole known role of carotenoids is to act as a source of vitamin A in the diet. Fruits and vegetables are the main source of carotenoids in the human diet.

QUESTION

According to the USDA, there is no difference between a “portion” and a “serving.” See Answer

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