The role of vitamin E

Vitamin E, also known as tocopherol or pregnol, is found in cooking oils, fruits, vegetables and grains. It was successfully synthesized in 1988 and is now available in tablets, injections, suppositories and other dosage forms.

As the name suggests, vitamin E, also known as tocopherol or pregnol-producing vitamin E, can maintain the normal function of reproductive organs and has a good influence on the metabolism of the body. It can reduce the weight of the ovary, promote its function, and promote the growth of follicles. Maturation causes the corpus luteum to enlarge and inhibits the oxidation of progesterone in the body, thereby increasing the effect of progesterone. In addition, vitamin E has an auxiliary therapeutic effect on menorrhagia, vulvar itching, nocturnal calf cramps, and hemorrhoids. In recent years, vitamin E has been widely used in anti-aging. It is believed that it can eliminate the deposition of lipofuscin in cells, improve the normal function of cells, and slow down the aging process of tissue cells.

Given that vitamin E has so many functions, some media have hailed the product as "wonderful" and even exaggerated the possible beneficial effects of large doses of vitamin E in the body, resulting in a vitamin E craze on the market. , the phenomenon of overuse of vitamin E occurs from time to time.

It is fat-soluble and stored in the liver, adipose tissue, heart, muscle, testicle, uterus, blood, accessory kidney, pituitary gland, etc.; consists of 8 compounds called tocopherols These eight types of tocopherols are: alpha, beta, gamma, delta, epsilon, zeta, eta, and theta, among which alpha-tocopherol has the strongest effect;

Enemy of Vitamin E< /p>

High temperature, oxygen, subzero temperature, food processing, iron, chlorine, mineral oil.

General effects

Vitamin E has a strong antioxidant effect and can prevent the oxidation of fatty compounds, vitamin A, selenium (Se), two sulfur amino acids and vitamin C.

Improve the effect of vitamin A;

Vitamin E is a very important vasodilator and anticoagulant;

Add 200IU of vitamin E Vitamin E nutritional supplements made with 25mcg of selenium can increase the effectiveness of vitamin E.

Efficacy

Delays the aging of cells due to oxidation and maintains a youthful appearance;

Supplies the body with oxygen, making you more durable;

< p>Works with vitamin A to resist air pollution and protect the lungs;

Prevent blood coagulation;

Reduce fatigue;

It is an external medicine for local trauma (can be absorbed through the skin) and oral medicine can prevent scarring;

Accelerate recovery from burns;

Use diuretics to lower blood pressure;

Prevents miscarriage;

Helps reduce leg cramps and stiffness of hands and feet;

Reduces the chance of ischemic heart disease.

Normal needs

The recommended daily intake for adults is 8 to 10IU; one IU of vitamin E is equal to 1 mg of vitamin E;

The daily intake is 60% to 70% will be excreted from the body with excrement. Unlike other fat-soluble vitamins, vitamin E is stored in the human body for a relatively short time, just like vitamins B and C;

Medical experts believe that the commonly used oral dosage of vitamin E should be 10 to 100 at a time. mg, 1 to 3 times daily. Large-dose use refers to more than 400 mg per day, and long-term use refers to continuous use for more than 6 months. The vitamin E contained in the general diet can fully meet the needs of the human body. Therefore, long-term use of vitamin E by the elderly is not only unnecessary, but also unsafe and can cause side effects.

Overdose

Is taking large doses of vitamin E really beneficial? American medical expert Robert advises: Long-term use of large doses of vitamin E can cause various diseases.

The more serious ones include: thrombophlebitis or pulmonary embolism, or both, because large doses of vitamin E can cause platelet aggregation and formation; increased blood pressure, which can be reduced or returned to normal after stopping the drug; both men and women Breast hypertrophy; headache, dizziness, vertigo, blurred vision, muscle weakness; skin cracks, cheilitis, angular stomatitis, urticaria; significant aggravation of diabetes or angina symptoms; hormone metabolism disorder, reduced prothrombin; blood cholesterol and increased triglyceride levels; increased platelet activity and decreased immune function.

Vitamin E poisoning

Adults take relatively large doses of vitamin E (d-α-tocopherol 400~800mg/d) for many years without any obvious damage. Taking 800~ Those who take 3200mg/d may occasionally experience muscle weakness, fatigue, vomiting and diarrhea. The most obvious toxic effect of vitamin E > 1000mg/d is the antagonism of vitamin K and the enhancement of the effect of oral coumarin anticoagulants. This can lead to significant bleeding.

Vitamin E deficiency

Red blood cell destruction, muscle degeneration, anemia, and reproductive dysfunction.

Foods rich in vitamin E

Wheat germ, soybeans, vegetable oils, nuts, Brussels sprouts, green leafy vegetables, spinach, flour with added nutrients, whole wheat, unrefined cereals products, eggs.

Nutritional supplements

Available in fat-soluble capsules and water-soluble tablets.

Vitamin E is generally sold in 100 to 1500IU. Water-soluble vitamin E is suitable for people who do not eat greasy food or people whose eating oily food will cause skin lesions. It is more suitable for middle-aged people over 40 years old.

The general daily intake is 200 to 1200IU.

Taking vitamin E should vary from person to person

According to researcher Li Keji from the Sports Medicine Research Office of Peking University Third Hospital: Vitamin E deficiency is very rare, especially since the dietary structure of Chinese residents is mainly based on Plant-based foods are the mainstay, and the intake of vitamin E is generally high. If there is no fat absorption disorder, the vitamin E provided in the diet can basically meet the normal human needs. However, a large number of clinical experiments have proven that vitamin E does have the function of preventing and curing diseases, but its specific application dosage and method are still inconclusive. Associate researcher Wang Fu from Shanghai Second Military Medical University introduced the clinical application of vitamin E in the treatment of various diseases at home and abroad.

1. Treatment of atherosclerosis

Foreign reports indicate that daily intake of more than 100 mg of vitamins can slow down the progression of mild, moderate or severe coronary atherosclerosis. Daily vitamin C or multivitamin supplementation does not slow the progression of coronary atherosclerosis. It is also reported that patients with arteriosclerosis who take 200 mg of vitamin E and 90,000 units of vitamin A will reduce symptoms such as headache, insomnia, dizziness, tinnitus, blood pressure, and blood lipids and cholesterol after 6 to 10 weeks.

2. Treatment of congestive cardiac insufficiency and angina pectoris

Give these patients 200 mg to 400 mg of vitamin E per day, which can increase exercise load, eliminate angina pectoris, and make diuresis effect.

3. Prevention and treatment of tumors

In vivo and in vitro experiments have shown that vitamin E has the effect of controlling the growth of tumor cells and reducing or delaying the occurrence of tumors in the body. Epidemiological data also show that there is a negative correlation between human vitamin E intake and tumors.

For example, foreign studies have found that using large doses of vitamin E can prevent hair loss caused by the chemotherapy drug doxorubicin. The general dosage is 1,600 mg per day and should be taken 5 to 7 days before the start of chemotherapy.

4. Vitamin E and gynecological diseases

Taking vitamin E capsules can cure bleeding or menorrhagia that occurs in some women after inserting the IUD. The method is: take 100 mg of vitamin E orally every other day, and one course of treatment is 7 days. Generally, 1 to 3 courses of treatment are enough. Other literature reports that vitamin E can treat immune infertility, anovulatory infertility and habitual abortion.

However, research results on Finnish male smokers show that vitamin E can reduce the risk of ischemic heart disease and ischemic myocardial infarction on the one hand, and can also increase bleeding on the other. , such as the risk of cerebral hemorrhage. Therefore, vitamin E cannot be taken in excess.

Finally, researcher Li Keji reminded readers that vitamin E deficiency is a relatively rare disease. When used to prevent and treat diseases, it must be carried out under the guidance of a doctor. Do not rush into it like calcium supplementation.

Reference materials: .yahoo.com/question/?qid=1406091712546&source=ks_sc