Vitamins are organic compounds vital for various bodily functions and overall health. They are divided into two categories: water-soluble vitamins (like vitamin C and B vitamins), which need to be consumed regularly, and fat-soluble vitamins (such as vitamins A, D, E, and K), which are stored in the body's fat tissues. These nutrients play critical roles in energy production, immune function, bone health, and more. A balanced diet typically provides adequate vitamins, but supplementation may be necessary for certain individuals to meet their nutritional needs.