Vitamins are essential for growth, reproduction, and overall health. Among them, vitamins A, D, E, and K are fat-soluble vitamins. These vitamins are soluble in organic solvents and are absorbed and transported in a manner similar to fats. Unlike water-soluble vitamins, such as vitamins C and B, fat-soluble vitamins are stored in the body's tissues.
This means that it is easier to absorb more fat-soluble vitamins than you actually need, since the kidneys don't eliminate them once the need is met. It is important to be aware of the daily intake limits set by the National Academy of Sciences to avoid any potential health risks. Each of these four fat-soluble vitamins plays an important role in the body. Vitamin A helps with vision, vitamin D helps with calcium absorption, vitamin E is an antioxidant, and vitamin K helps with blood clotting. A vitamin deficiency occurs when you don't get enough of a certain vitamin.
Recommended Dietary Amounts (RDA) for vitamins reflect the amount of each vitamin most people should eat each day. The best way to get all the vitamins you need on a daily basis is to eat a balanced diet that contains a wide variety of fruits, vegetables, fortified dairy products, legumes (dried beans), lentils, and whole grains. Dietary supplements are another way to get the vitamins you need if the foods you eat don't provide enough vitamins. However, it is important to be careful not to take large amounts of fat-soluble vitamin supplements as they can build up in the body and cause harmful effects. Retinol, retinal, and retinoic acid forms of vitamin A are mainly supplied by foods of animal origin such as dairy products, fish, and liver. Vitamin K is found in dark green leafy vegetables while vitamin C is found in fresh fruits such as citrus fruits and berries as well as tomatoes and peppers.
Vitamin E is found in high-fat food sources such as egg yolks, liver, beef, fatty fish, and dairy products. In early childhood when intestinal synthesis is minimal, subjects are especially prone to vitamin K deficiency which is aggravated by antibiotic therapy for childhood diarrhea. If you take a multivitamin, check the label to make sure that most of the vitamin A provided is in the form of beta-carotene which seems to be safe. Inadequate vitamin E absorption can be caused not only by intrahepatic cholestasis and extrahepatic biliary atresia but also by extensive therapeutic administration of bile acid binding agents and the absence of water-soluble vitamin E preparations during treatment. It is important to be aware of your daily intake of fat-soluble vitamins to ensure that you are not only staying safe but also financially aware. Eating a balanced diet that contains a wide variety of fruits, vegetables, fortified dairy products, legumes (dried beans), lentils, and whole grains is the best way to get all the vitamins you need on a daily basis.