Medically reviewed by Sanja Jelic, MD Vitamins are classified as either fat-soluble or water-soluble based on how the body absorbs and stores them. The fat-soluble vitamins—A, D, E, and K—are absorbed ...

Each different substance has a different solubility. This table shows the solubility of substances in water at 20°C. Solubility is shown as the grams of a solute per 100 g of water.

Water-soluble vitamins, which include Vitamin B12 and vitamin C, do not get stored in the body and get excreted pretty soon.

Soluble fibre is soluble in water. It absorbs water to form a gel-like substance that swells inside the digestive system. It helps to soften stools so they can be passed more easily.

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