Which vitamin is classified as fat-soluble?

Vitamin D is classified as a fat-soluble vitamin, which means it can be stored in the body's fatty tissues and liver. This distinguishes it from water-soluble vitamins, which are not stored in the body to the same extent and require regular intake through diet to maintain appropriate levels.

Fat-soluble vitamins, including Vitamin D, are absorbed along with dietary fats through the intestinal tract. They play essential roles in various bodily functions; for instance, Vitamin D is crucial for maintaining bone health because it enhances calcium absorption in the gut. It is synthesized by the body when the skin is exposed to sunlight, but can also be obtained from dietary sources such as fatty fish, fortified foods, and supplements.

Understanding the classification of vitamins as fat-soluble or water-soluble helps in comprehending how the body processes and utilizes these nutrients. Fat-soluble vitamins can remain in the body longer, which affects dietary recommendations and potential toxicities associated with excessive intake.