Carrots are healthy, that’s not a question. As so often, however, it depends on the dose. © Andrea Warnecke / dpa
Carrots, nuts, oatmeal – there are a number of foods that are said to have a positive impact on the skin. Some should even provide a kind of natural sunscreen. Or for a tan without sun. The fact is: a healthy diet benefits the skin. Sunscreen from creams or sprays can not replace them. And that with tanning is not quite true.
Like other organs, the skin is dependent on a supply of vitamins, minerals and nutrients. With the help of vitamin A, for example, new skin cells are formed. This is especially important if the skin has been damaged – such as a sunburn, explains dietician Margret Morlo. Vitamin A is found, for example, in dairy products, carrots and fish.
Occasionally one can also read that vitamin A builds up a mild sun protection factor of two to three, says Stefan Kabisch, study physician at the German Institute for Nutrition Potsdam-Rehbrücke. But: “The necessary beta-carotene doses are so high that you would have to eat kilograms of carrots daily. For smokers, the effect is completely gone. ”
Tomato also helps against wrinkles
Vitamin A does not protect against sunburn, says Morlo. “When the skin is exposed to stress, and strong sun exposure and sunburn are stress for the skin, then it is important that the mechanism of the skin works properly.”
In addition to vitamin A, vitamin C also contributes to this. It helps the skin to regulate moisture. For citrus fruits, peppers, but also potatoes are good suppliers. And vitamin E and B vitamins also play an important role in skin renewal: they are needed above all when you have sores. These vitamins can be found in cereal products, especially whole grain cereals, but also in vegetables and dairy products.
Some vitamins are also able to catch so-called free radicals. “Solar energy is ultimately radiation energy that is so intense that it can destroy molecular structures,” says Kabisch. This results in molecular fragments, the free radicals. These fragments attack other molecules and can change them to lose their proper function. These can be, for example, proteins that have an essential function in cell metabolism.
“Some vitamins, especially vitamin C, are capable of trapping, detoxifying, and destroying these radicals,” says the study physician.
Another substance that plays a role in sun protection is found in tomatoes: as an antioxidant, lycopene absorbs aggressive oxygen compounds that are produced as a result of the UV rays and renders them harmless. Lycopene protects not only from the short-wave UVB rays that cause sunburn, but also far better from the long-wave UVA rays that cause wrinkles, explains Jean Krutmann, scientific director of the Leibniz Institute for Environmental Medical Research.
Pills are unnecessary
“But you have to keep in mind that it takes several weeks for the protection to build up,” says Krutmann. And even then you only achieve a sun protection factor of five to six. A veritable sunscreen so you can not beguttern. It’s rather like this: Those who eat a balanced diet create a good basis for a day in the sun.
Special remedies, as they are on many shelves, do not need healthy people for them, explains Kabisch. Carotene capsules, for example, contain a precursor of vitamin A and are sometimes advertised as a natural tanning agent. The study doctor, however, makes it clear: “You do not turn brown. What you see are orange excess deposits of carotene in the skin, which is slowly breaking down again. ”
In addition, all fat-soluble vitamins, E, D, K and A, run the risk of overdose, which may increase disease risks, especially for tumors. An overdose of vitamin A can damage the liver, skin and bones, says Kabisch. According to the motto “a lot helps a lot” to swallow supplements, so is not such a good idea. (AP)
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Do carrots protect against sunburn?
Carrots, nuts, oatmeal – there are a number of foods that are said to have a positive impact on the skin. Some should even provide a kind of natural sunscreen. Or for a tan without sun. The fact is: a healthy diet benefits the skin. Sunscreen from creams or sprays can not replace them. And that with tanning is not quite true. (…)
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