root of the problem lies for you and many of our other viewers, let’s turn to our expert, roman vyacheslavovichhow to understand that there is a problem with sleep? iron deficiency can actually cause problems with insomnia, with a decrease in dopamine production in the brain, because in iron is involved in the synthesis of dopamine, and this lowers mood, causes weakness, deterioration in the quality of sleep, and sometimes you may not understand from a general blood test, that is, hemoglobin will still be normal, yeah, but iron may no longer be enough, moreover, even if you take iron, it can also be normal, but there will be a lack of firitin, this is... the so -called protein, which shows iron reserves in the body, that is, even hidden iron deficiency can cause problems, well , that is, in this case, what needs to be done an extended analysis, so that it definitely contains feretin, it is desirable, well, in fact , it also turns out vitamin b12, probably because it also affects the metabolism of iron, yes, well, that is, it’s not just going to do a general blood test once a year, moreover, i w