"Fat-soluble" refers to substances that can dissolve in fats and oils. This property allows these substances to be stored in the body's fatty tissues and liver. Common examples of fat-soluble vitamins include Vitamin A, Vitamin D, Vitamin E, and Vitamin K. These vitamins play essential roles in various bodily functions, such as vision, bone health, and immune function. Unlike water-soluble vitamins, which are excreted through urine, fat-soluble vitamins can accumulate in the body. This means that excessive intake can lead to toxicity. Therefore, it's important to consume them in appropriate amounts through a balanced diet that includes healthy fats.