Doctors say that sleepiness in early pregnancy is caused by changes in hormonal levels. It hormones cause drowsiness and make a woman more likely to have a rest. In this way, the mother and child are protected by the stress of adapting to a new state.
When pregnancy occurs in a woman's body hormonal changes occur. In the early stages of pregnancy the main hormone to maintain this state, it is the female sex hormone progesterone, which is secreted by the corpus luteum of the ovary.
Under the influence of progesterone in the lining of the uterus (endometrium) begin to function gland - they secrete substances necessary for the introduction of the embryo and the endometrium to its normal development. At the same time, progesterone inhibits the contraction of the smooth muscle of the uterus, preventing, thus, the termination of pregnancy.
Since smooth muscle is present not only in the uterus, but also to other internal organs as well as blood vessel walls, side effects progesterone actions will constipation (suppression of intestinal motility), lowering blood pressure (blood pressure - reducing the tone of blood vessels), and so Further. A decline in AD is accompanied by dizziness and drowsiness.
Drowsiness helps the mother and child survive the process of adaptation is therefore considered protective physiological response.
Sleep is essential for a person to recuperate, and during pregnancy it is needed twice. With the help of sleepiness organism is protected from the stress associated with the restructuring of the work of all organs and systems. Therefore sleepiness is one of the earliest signs of pregnancy.
Drowsiness during early pregnancy increases after physical and information loads and stress. Drowsiness can be enhanced also with eating disorders (irrational or irregular meals), to sleep at night and there is no rest for the day.
The reason the gain of sleepiness may be cardiovascular (sustained blood pressure) and endocrine (Diabetes, decreased thyroid function) systems, vascular dystonia, neuroses, accompanied by depression and so Further. One of the common causes of severe sleepiness in early pregnancy may be an iron deficiency anemia. With a lack of iron in the body decreases the hemoglobin in red blood cells, whose main function is to deliver oxygen to the cells. Particularly affected are in this case the brain cells, which manifests itself as severe dizziness, fainting and drowsiness.
