Final answer:
Fat-soluble vitamins are stored in the body and do not require daily intake, but must be consumed in moderation to avoid toxic buildup, known as hypervitaminosis.
Step-by-step explanation:
Since fat-soluble vitamins such as A, D, E, and K are stored in the liver and fatty tissues, your requirements for these vitamins are different from water-soluble vitamins. Unlike water-soluble vitamins that need to be consumed more regularly because excess amounts are excreted in urine, fat-soluble vitamins can be stored in the body for longer periods. Thus, they do not require daily intake and can be taken in larger doses, though not too frequently, to avoid the risk of hypervitaminosis. It is important to balance your intake and ensure that you get these vitamins from your diet or supplements in moderation.
For instance, the synthesis of vitamin D occurs in the skin through sunlight exposure, and it is also obtained from dietary sources. The body can create vitamin A from precursors like ß-carotene. Because of the storage capability, consuming very high amounts of these vitamins can lead to toxic levels. Therefore, while ensuring adequate intake, it is crucial not to exceed the recommended amounts to avoid potential toxicity.