Why is it that one breast is bigger than the other?

Under normal circumstances, the size of a woman's breasts should be symmetrical. Some women have one breast that is larger than the other but don't know why. There are many reasons why women have asymmetrical breasts, which may be caused by hormones or improper sleeping posture.

1. Caused by estrogen

This may be related to the uneven distribution of blood vessels, nerves, and hormone receptors in both breasts. This is usually caused by the different sensitivity of a substance in the breast called "breast buds" to estrogen and progesterone in the body.

2. Improper exercise factors

Asymmetric limb activities can easily affect local blood circulation, such as long-term physical exercise such as badminton, tennis, shot put, etc., which exercises one side of the upper limb or chest muscles.

3. The influence of habitual posture

Long-term leaning to one side, prone sleeping posture, scoliosis when walking, or one shoulder higher than the other can all have an impact. This habit is also the key factor causing one side of the breast to be larger than the other.

4. Congenital factors

During embryonic development, if one breast develops abnormally, the two breasts will be obviously asymmetrical during puberty, and the underdeveloped side will be significantly smaller than the healthy side. Generally speaking, this situation will not affect marriage, childbirth and feeding, but it will have a certain impact on the unique beauty of women's curves.

5. Remember to wear the right underwear every day

According to the latest statistical survey in the United States, among women aged 25-45, one in four suffers from breast disease to varying degrees, and wearing inappropriate underwear for a long time has an unshirkable responsibility. Therefore, choosing a suitable bra according to your bust size is also one of the things you need to do to maintain your breasts.