The development of breast is influenced by endocrine hormones in anterior pituitary, adrenal cortex and ovary. The anterior pituitary gland can produce growth hormone, which directly affects breast development, and the ovary can produce estrogen and progesterone to promote breast development. In addition, growth hormone and insulin are also indispensable components of breast development. Therefore, too small breasts have a lot to do with insufficient hormone secretion.

Ethnic, genetic and physiological factors.

Western women's breasts are far fuller than those of eastern women; In addition, generally speaking, the mother's breasts are thinner, and the daughter's breasts are not too full; Fat people accumulate more fat, so their breasts will be full and prominent, while thin people accumulate less fat, so their breasts will be flat and small.

Diseases affect breast development.

Adolescence is an important stage of breast development. If a woman suffers from hypopituitarism, pituitary dwarfism or primary ovarian hypoplasia during her teenage years, her breasts will become thinner.

malnutrition

Some girls over-diet because they are afraid of obesity, do not eat or eat less nutritious food, which makes them slim, and leads to insufficient nutrition to maintain metabolism, which leads to reduced body fat, which will eventually lead to breast dysplasia and smaller breasts. If it also leads to amenorrhea or menstrual disorder, it means that nutritional deficiency has caused endocrine abnormalities, not just breast problems.

The size of a breast depends on the amount of breast tissue and adipose tissue. Appropriately increasing some breast fat is the most natural, reasonable and healthy way to improve breast fullness. One-sided pursuit of slim figure, blind dieting, picky eaters, eating only vegetarian dishes, not eating fish and meat to make the body fat low, then the chest will be thin.

The cover size does not match.

Many women don't try on bras. In fact, too small a bra will affect the development of the chest, and wearing too large a bra for a long time may lead to sagging of the chest.

With the change of age, the size of women's breasts will change before and after marriage or pregnancy. At this time, it is necessary to adjust the size when buying a bra, and then buy it after trying it out. When wearing a bra, don't buckle it casually. Instead, fasten the bra first, then adjust the shoulder straps, bend forward, and stuff the whole breast and surrounding fat into the cup by hand to make it look full. It can also avoid breast fat migration and make breasts smaller and smaller.