During World War II, food supplies were scarce. At one point, English researchers wanted to find out how little vitamin C it would take to prevent the potentially lethal disease, scurvy. In order to do that, they carried out a drastic experiment that later served as basis for our current vitamin C recommendations. However, a recent analysis of this old study has revealed that the actual need for vitamin C is a lot greater than previously thought, suggesting that WHO raise the recommended daily intake level. The question is how much vitamin C do we really need and what good does the vitamin do?

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Oily fish and fish oil have a high content of the two omega-3 fatty acids, EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), that are important for our brain, nervous system, intelligence, and mental health. Modern diets, however, are to blame for our lack of omega-3. A team of scientists from England has found that supplementation with EPA-rich fish oil for 26 weeks improves mental acuity and reaction time in healthy, young adults. This was not the case with DHA-rich oil fish oil, on the other hand. The scientists were surprised to find that EPA is more important than DHA for these cognitive skills.

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Colorectal cancer is one of the most common cancer forms in Denmark, which is why prevention is so important. According to a new American study that is published in Gastroenterology, increased intake of vitamin D appears to protect against bowel cancer, especially in people younger than 50 years. It even looks as if vitamin D may prevent intestinal polyps that can turn into cancer in some cases. The scientists say that higher intake of vitamin D may be relevant for prevention and may also serve as an inexpensive supplement to screening tests that are merely used for early diagnosis.

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Type 1 diabetes can eventually lead to eye damage and if this is not discovered in time it may cause blurry or impaired vision. According to a new study that is published in Diabetes, supplementing with omega-3 for six months can regenerate damaged corneal nerves, so the scientists believe that eating more oily fish or taking a fish oil supplement may represent a promising add-on to existing therapies.

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Sales of plant-based meat, also known as meat analogue, has increased for environmental reasons and a number of other reasons. However, even if meat analogue does resemble regular animal meat it has an entirely different nutritional value. According to a study from Duke University in the United States, real meat contains 22 different nutrients and metabolites that you do not get from meat analogue. On the other hand, meat based on vegetarian sources contains 31 nutrients and metabolites that are not found in normal meat. The largest difference between the two, according to the scientists, lies in their content of amino acids, peptides, vitamins, phenols, and fatty acids. The researchers also mention that a diet based on vegetable and animal products is complementary because it contains more nutrients.

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More and more people experience despair and depression. There can be several underlying factors but according to a large German population study, lack of vitamin D increases the risk of depressive symptoms. The scientists explain how vitamin reduces local inflammation in the brain, which increases the risk of developing a depression. That is why it is so important to get plenty of vitamin D all year round because the nutrient affects our mood and energy level in a variety of ways.

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