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 Vitamins

Just over 100 years ago, before the discovery of vitamins, scientists knew that certain foods could be used in the treatment of certain conditions. But they didn't know why.

Scientists believed that diseases like scurvy and beriberi were caused by bacteria.

But when a scientist called Christian Eijkman found that a water-extractable factor in rice could prevent beriberi, this notion was turned on its head. And a world of knowledge about vitamins started to open.

In this section, you'll learn more about what scientists have discovered since - and how you can benefit.

Vitamins:
 
 Vitamin E
What it is
What it does for you
How much do you need?
Which foods have it?
Signs of deficiency
How much is too much?
New research
 
What is vitamin E?

Vitamin E (tocopherol) is a powerful antioxidant. It is a fat soluble vitamin which is stored in the body for only a short time, requiring a regular intake.


What vitamin E does for you

Like all antioxidants, vitamin E neutralises the potentially harmful free radicals in the body. Free radicals cause changes in your cells’ DNA, which can lead to cancers.

Vitamin E is very important for keeping your cell walls in good condition and maintaining healthy nerves, skin, muscles, red blood cells, heart and circulation. It also enhances the utilisation of vitamin A.


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How much vitamin E do you need?

The recommended dietary allowance/adequate intake (RDA/AI) for this vitamin is 15mg per day for both men and women, although breastfeeding women need slightly more.

Click here to view a complete list of RDA/AI values.


Which foods have vitamin E?

Oils such as wheat germ oil, sunflower oil, sunflower seeds, nuts such as hazelnuts, almonds, pine nuts sweet potatoes, avocado pears and dark green vegetables such as spinach.


Signs of vitamin E deficiency

Wounds that are slow to heal, varicose veins, loss of muscle tone and infertility all point to a vitamin E deficiency. Bruising easily can also be a sign of a deficiency, as well as high homocysteine levels.


How much vitamin E is too much?

A major review of 68 studies recently found that vitamin E, given on its own or in combination, significantly increased mortality (death). For this reason, it's important to stick to recommendations for this vitamin, and to never exceed an intake of 1000mg per day.


New research on vitamin E

Vitamin E supplements may protect against cancer of the lung and cervix, as well as other cancers. They may also reduce the onset of cataracts and strengthen the immune system against infections.

Daily vitamin E supplements of up to 100g appear to lower the risk of stroke, heart disease and angina by reducing the formation of fatty plaques on the walls of arteries, as well as reducing arthritic pain.



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