Breast size is determined by a combination of genetics, hormone levels, and body weight. Factors that can affect breast size include:

• Genetics: The size and shape of a person’s breasts are determined largely by their genetic makeup, and breast size can run in families.
• Hormones: Hormones such as estrogen and progesterone play a role in breast development and can affect breast size.
• Pregnancy and breast-feeding: During pregnancy, the breasts swell and enlarge as they prepare for lactation. After breastfeeding, some women may notice a decrease in breast size.
• Weight gain or loss: Gaining or losing weight can affect the size and shape of the breasts.
• Age: As women age, their hormone levels change and this can affect breast size.
• Medications: Certain medications such as hormone therapy, birth control pills, and antidepressants can affect breast size.

It’s important to remember that breast size is unique to every individual and it’s not always possible to change it. If you are concerned about your breast size, it’s best to consult with a healthcare professional for personalized advice.

Also read: How to increase breast size?