

Changes over life.
In this section, you will learn about how your body, and particularly your breasts, change throughout life. Knowing these changes will help you care for your body and improve your health.
How Do our Breasts Change over Life?

Understanding Puberty
Puberty is a time of significant physical changes in a girl's body. One of the most noticeable changes is breast development. During this time, the ovaries begin to produce estrogen, which stimulates breast growth. This growth may occur quickly or slowly and can cause the breasts to feel tender or sore.[1]

First Menstrual Periods
Menarche, the first menstrual period, is a significant milestone in a woman's life. During this time, hormonal changes cause the ovaries to release an egg, and the uterus to prepare for pregnancy. At the same time, the breasts may become sore or tender, and women may experience bloating or cramping.[2]

Normal Menstrual Cycle
The menstrual cycle is a regular natural change that occurs in the female reproductive system. This cycle is necessary for the production of eggs and the preparation of the uterus for pregnancy. Hormonal changes during the menstrual cycle can cause changes in the breasts, such as tenderness or swelling.[3]

Changes during Pregnancy
During pregnancy, the breasts undergo significant changes in preparation for breastfeeding. As early as the first trimester, the breasts may become sore or tender, and the nipples may darken and become more sensitive. As the pregnancy progresses, the breasts may continue to grow and become fuller.[4]

Changes during Menopause
Menopause is a natural process that occurs when a woman's ovaries stop producing eggs. This typically happens between the ages of 45 and 55. During menopause, hormonal changes can cause many physical and emotional symptoms. The breasts may become less dense or shrink, and women may experience tenderness or discomfort.[5]
It's important for women to understand the changes that happen to their bodies throughout their lives, including the changes that happen to their breasts. By understanding these changes, women can take better care of their bodies and improve their overall health and well-being.