What is an example of a water-soluble vitamin?

Vitamin B12 is a water-soluble vitamin, which means it dissolves in water and is carried to the body's tissues but is not stored in the body to a significant degree. This characteristic is essential for its absorption and utilization, as the body needs a regular supply of water-soluble vitamins from the diet.

Water-soluble vitamins, including Vitamin B12, play crucial roles in energy metabolism and the formation of red blood cells, among other functions. Vitamin B12, in particular, is vital for neurological function and the synthesis of DNA. Since these vitamins are not stored in large quantities, any excess that the body does not use is typically excreted in urine. This necessitates regular dietary intake to maintain adequate levels.

In contrast, the other vitamins listed are fat-soluble. Vitamins A, D, and E dissolve in fats and oils, and the body can store them for longer periods, which affects their dietary requirements and the way the body metabolizes and utilizes them.