The shrinkage of the uterus may be a normal physiological phenomenon of decreasing estrogen levels, or it may be caused by endocrine disorders, premature ovarian failure and other pathologic factors.
1. Normal physiological phenomenon:
(1) Menopause: After menopause, women’s estrogen level decreases, which can’t effectively promote the proliferation and hypertrophy of uterine smooth muscle cells, thus leading to thinning of the myometrium and reduction of blood transportation of the uterus, which further develops into slowing down or stopping the proliferation and repair of the endometrial mesenchymal stroma and glands, thus making the uterus shrunken and smaller.
(2) After the delivery: after the delivery of the fetus and placenta, the size of the uterus will be significantly reduced, which is also a normal physiological state.
2. Pathological factors:
(1) Endocrine disorders: endocrine disorders may cause insufficient secretion of estrogen in the body, the uterus cannot accept the cyclic changes of estrogen, and the loss of hormone support for the uterus may result in atrophy. Irregular work and rest, polycystic ovary syndrome, etc. may lead to endocrine disorders.
(2) Premature Ovarian Failure: This is a condition in which a woman’s ovaries fail before the age of 40, which may lead to lower levels of estrogen and allow a woman to experience premature amenorrhea and uterine shrinkage.
Uterine shrinkage may also be caused by other reasons. It is recommended to go to the hospital in time to improve the relevant examination, and be diagnosed and treated by professional doctors.