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In Germany, many people have a vitamin D deficiency. The study on adult health in Germany (DEGS) has shown that the supply of iodine is not optimal for every third adult. Between 2008 and 2011, blood and urine samples from almost 8,000 participants were evaluated for the first wave of the survey.
The body needs vitamin D above all for its bone metabolism. However, according to current data, one in three Germans with a serum concentration of less than 30 nmol / l 25-hydroxy-vitamin-D is deficient, reports the German Nutrition Society (DGE). Just under 40 percent are adequately supplied. The body can produce vitamin D under the influence of UVB light. Therefore, between March and October, you should go to the sun two to three times a week with your face, hands and arms uncovered and without sunscreen, but without risking sunburn.
Folate is important for cell growth, division and differentiation. Good care is therefore particularly important during pregnancy and in phases of growth. 86 percent of the adult population is adequately supplied with folic acid (at least 4.4 ng / ml). However, most women do not reach the recommended concentrations for women of childbearing potential. If you want to or could be pregnant, you should take 400 µg folic acid as a preparation in the first trimester of pregnancy so that the unborn child can develop optimally.
Iodine is a vital trace element and, among other things, a component of the thyroid hormones. Germany is an iodine deficient area due to geographical conditions. Iodine supply is unsatisfactory for 30 percent of adults. According to the DGE, one solution could be the increased use of iodized table salt in the food industry.
The mineral potassium is involved, among other things, in regulating the water balance and stimulating the nerves. A reasonable intake is 4,000 mg per day, which is usually also achieved. The intake is even too high for sodium: for a large part, the intake is far above the reference value of 1.5 g per day for an adult. An average of 4.0 g was measured in men and 3.4 g in women, which corresponds to about 10 g and 9 g of table salt daily. This is worrying because too much table salt increases the risk of high blood pressure. A maximum of 6 g per day is recommended.
"If you eat a wholesome diet and use the variety of food, you usually get enough nutrients," explains nutritionist Harald Seitz from the Federal Center for Nutrition (BZfE). "Avoid processed products that usually contain a lot of salt." With certain illnesses and special stresses, in pregnancy and lactation, in old age and in case of food intolerance, the use of food supplements can make sense. "Those affected are best advised by a nutritionist or a nutritionist," advises Seitz. Heike Kreutz, respectively