It is necessary to recognize that this sounds rather paradoxical, but the question "how to gain weight?" Is for some the same urgent as the question of losing weight for others. Excessive leanness is the same problem as obesity.
From estrogen, combining estradiol, estriol and estrone, the most active and significant length is the first, it is in it has the ability to convert excess testosterone in peripheral tissues (especially in the fat layer and liver).
Part of the free testosterone in some target cells under the influence of the enzyme 5-alpha-reductase (type 1 or 2) is converted to dihydrotestosterone (DHT), part to the female sex hormone estradiol (this conversion occurs under the influence of enzymes with the general name aromatase).
We introduce, for a start, several concepts, without which we will not be able to continue our discussion of the section very difficult. Do not be scared - no special knowledge will be required from you.
Like any communication network, the endocrine system will include sources of signals, the signals themselves and signal receivers. In this case, these are the cells that produce hormones, the hormones themselves and their receptors.
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