Are breasts fat?

Are breasts made of fat? For fat people who lack exercise, their breasts are mostly made up of fat; for ordinary women, breasts are mainly made up of fat, so fat people have bigger breasts. For muscular men, their chest is mainly composed of muscles and not entirely fat because of their well-developed pectoralis major muscles. This is achieved through strength training.

1. Breast development:

The time when women's breasts begin to develop varies depending on factors such as region and race. For most women, breast development begins between the ages of 8 and 13, and fully matures between the ages of 14 and 18. Breast development usually starts from the left side, and it takes about 3-5 years from the beginning of development to full maturity.

The first stage (1 to 9 years old): before puberty, breasts have not yet developed.

The second stage (10-11 years old): In the early stage of breast development, the breast bud under the nipple begins to grow and appears as a distinct dome-shaped bulge.

Stage 3 (12-13 years old): The breasts become rounder and shaped like adults, but are still smaller.

Stage 4 (14-15 years old): The breasts enlarge rapidly, and the nipples and areola protrude forward, shaped like small balls.

The fifth stage (16-18 years old): Normal adult breasts are formed, and the small balls of the nipple and areola merge into the round shape of the breast.

2. Abnormal developmental manifestations:

(1) Multiple breasts and multiple nipples:

If the mammary rudiments do not degenerate or degenerate incompletely during the embryonic period, multiple nipples or multiple breasts will occur. Most of them occur on the baseline of breast formation, which is the line from the armpit to the groin.

(ii) Nipple abnormalities:

An abnormality of the nipple refers to an abnormality in its size, shape, or position. A normal nipple is cylindrical and protrudes about 2 cm above the surface of the breast skin. Abnormal nipple position is common. According to the relationship between the nipple and the breast skin, it can be divided into flat nipple, inverted nipple and inverted nipple.

(III) Breast hypertrophy:

One of the abnormalities of female breast development is breast hypertrophy. Macromastia mostly occurs during adolescence and pregnancy. The cause is still unclear, but it may be due to excessive sensitivity of breast tissue to estrogen.

(IV) Hypoplastic breasts:

Small breasts or missing one or both breasts. The absence of both breast and nipple is called complete breast agenesis. People who have only nipples but no breasts are called partial breast loss.