What is vitamin E and what is its main function?

Vitamin E, also known as tocopherol or alpha-tocopherol, is an essential nutrient found in every cell of the body. Its main function is to act as an antioxidant, meaning it protects cells from damage caused by free radicals. Additionally, vitamin E plays vital roles in supporting proper nerve and muscle function, helps prevent blood clots, and boosts the immune system to fight infection [1].

The importance of vitamin E for the body

As a powerful antioxidant, vitamin E protects cells from oxidative stress, a process that can contribute to the development of many health problems. It is also necessary for the effective functioning of the nervous and muscular systems, ensuring proper coordination and movement. Vitamin E also contributes to strengthening the body's immune response against pathogens, helping to maintain the body's health and its ability to resist disease [1].

Dietary sources of vitamin E

Most people obtain sufficient amounts of vitamin E through their diet. Rich sources of vitamin E include vegetable oils, nuts, seeds, avocados, and green leafy vegetables. Vitamin E is also added to some fortified foods such as breakfast cereals, fruit juices, and certain types of margarine [1], [2]. Typically, amounts obtained from food do not cause harmful high levels of vitamin E in the body [1].

Symptoms of vitamin E deficiency

Vitamin E deficiency is very rare in healthy individuals. It is often caused by conditions that prevent the body from properly absorbing vitamin E, such as digestive disorders that affect fat absorption, as the body requires fat to absorb vitamin E [1]. These conditions include Crohn's disease, cystic fibrosis, liver disease, celiac disease, pancreatitis, and certain genetic disorders [1]. Following an extremely low-fat diet can also lead to vitamin E deficiency [1]. Symptoms of vitamin E deficiency include muscle weakness, loss of sensation in the arms and legs, problems with walking and controlling body movements, and vision problems [1].

When should you see a doctor?

If you suspect that you are suffering from a deficiency or an excess of vitamin E, or if you are taking vitamin E supplements and have any concerns, it is important to consult a healthcare provider. A blood test for vitamin E can help determine its levels in your body [1]. Always speak with your doctor before taking any dietary supplements, especially if you are taking other medications such as blood thinners or cancer drugs, as vitamin E supplements may interfere with their effectiveness or the body's ability to use other vitamins [1]. You can learn more about Vitamin E: The powerful antioxidant and its benefits for skin and general health (Arabic).

Medical references

• Vitamin E (Tocopherol) Test
• Vitamin E