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Pregnancy is considered to be a major
endocrine event. Hormones are responsible for most of the
maternal physiological changes of pregnancy. Though estrogen and
progesterone are the main hormones involved in pregnancy changes,
there are other important factors and hormones to be considered.
Not only the mother, but the fetus and the combined
"fetal/maternal unit" produce and secrete hormones.
Hormonal changes are essential in meeting the
nutritional needs of the growing fetus. The fetus needs steadily
increasing supplies of maternal glucose, amino acids and lipids.
Hormonal changes help control this process.
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