What type of vitamins are A, D, E, and K classified as?

Vitamins A, D, E, and K are classified as fat-soluble vitamins. This classification is based on their solubility properties; they dissolve in fats and oils rather than water. When consumed, these vitamins are absorbed in the intestinal tract along with dietary fat. Once absorbed, they can be stored in the body's fatty tissues and liver, allowing for a reserve supply that can be utilized when needed over time. This contrasts with water-soluble vitamins, which are not stored and need to be consumed more frequently. The fat-soluble vitamins play crucial roles in various bodily functions, such as maintaining vision (A), regulating calcium and phosphorus (D), serving as antioxidants (E), and aiding in blood clotting (K). Their unique absorption and storage methods are essential for understanding their roles in nutrition and health.