For other uses of the word, see discursive. Discursive Psychology (DP) is a form of discourse analysis that focuses on psychological themes in talk, text and images.
The vitamins include vitamin D, vitamin E, vitamin A, and vitamin K, or the fat-soluble vitamins, and folate (folic acid), vitamin B12, biotin, vitamin B6, niacin, thiamin, riboflavin, pantothenic acid, and vitamin C (ascorbic acid), or the water-soluble vitamins.
This group includes vitamin A -- retinol, beta carotene, and carotenoids --, vitamin C, and vitamin E. They appear to play a role in protecting you from tiny particles your body makes, called free radicals, that can tear cells apart. Antioxidants may lower the risk of some health problems and slow aging.