Health of pregnant women
Vladimir Spirichev Head of the Laboratory of Vitamins and Mineral Substances of the Institute of Nutrition of the Russian Academy of Medical Sciences, Honored Scientist of the Russian Federation, Corresponding Member of the ATN, Professor, D.Sc.
The content of manganese in the body of an adult is 10-20 mg. Its concentration is especially high in the tissues of the brain, liver, kidneys, pancreas.
Manganese is necessary for normal growth, maintenance of reproductive function (ability to conceive, bear and give birth to a child), metabolism of connective tissue (tissue that is more or less present in all organs and tissues, forming their basis), bone formation, fat metabolism and carbohydrates - all these processes are extremely important during pregnancy, when the formation of tissues and organs of the fetus.
Manganese supports the activity in the body of various enzymes - substances that accompany almost all the biochemical reactions in the body, which is also important during pregnancy.
It has been established that the deficiency of manganese disrupts the growth and development of the fetal skeleton, and the inclusion of this microelement together with calcium in the diet improves the density of the bones of the mother and baby.
The level of sufficient intake of manganese for adult men is 2.3 mg, for women 1.8 mg, rising during pregnancy to 2.0 and for breastfeeding up to 2.6 mg per day.
Manganese is quite rich in cereals, legumes, nuts. Its content in meat, fish, milk and eggs is small. Coffee and tea are exceptionally rich in manganese. One cup of tea can contain up to 1.3 mg of this microelement, but do not forget that coffee is not recommended for pregnant and lactating mothers. Absorption of manganese in the human intestine from normal food is limited and usually does not exceed 10%.
In high amounts, manganese is harmful, especially for nervous tissue. The upper level of its permissible intake is 11 mg per day, not much, only 5-6 times, exceeding its sufficient consumption.
Since manganese, present in drinking water and dietary supplements, is absorbed much more efficiently than that contained in food products, it is necessary to approach the use of such additives with caution, especially for people whose diet is dominated by manganese-rich foods.
As American researchers at the University of California in Irvine have established, there is reason to believe that a high content of manganese in milk mixtures can provoke the development of a syndrome of minimal brain dysfunction, accompanied by a lack of attention in children. In a study conducted by scientists led by pediatrician professor Francis Krinella, it was found that behavioral disorders were noted in rats receiving large doses of manganese at an early age. In addition, they decreased the activity of dopamine, a substance that plays an important role in the work of the brain and is associated with the suppression of behavior typical for hyperactive children. The theory of scientists is confirmed by studies, during which it was found that the workers engaged in the extraction of manganese often observe deviations in behavior accompanied by cruelty.