Which vitamins are considered water-soluble?

Water-soluble vitamins are those that dissolve in water and are not stored in the body in significant amounts. Instead, they are excreted through urine, which means they need to be consumed more regularly to maintain adequate levels. The vitamins that fall into this category are Vitamin C and the B vitamins, including B1 (thiamine), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid), B6 (pyridoxine), B7 (biotin), B9 (folate), and B12 (cobalamin).

These vitamins play crucial roles in various bodily functions, including energy production (B vitamins) and antioxidant protection (Vitamin C). Their water solubility allows them to easily participate in metabolic processes but also requires regular dietary intake to prevent deficiencies, reinforcing their classification as water-soluble.

In contrast, the other options contain fat-soluble vitamins, meaning they dissolve in fats and oils, are stored in the body's fatty tissues, and do not require daily intake. Examples of fat-soluble vitamins include Vitamins A, D, E, and K, which have different absorption and storage mechanisms compared to water-soluble vitamins.