Genetics: Breast size is largely determined by genetics.
Hormones: Estrogen and progesterone play a role in breast growth and development.
Weight: Fat is found in breast tissue, so gaining weight can also lead to breast growth
Breast enlargement occurs due to pregnancy and breastfeeding.
Age: Breasts grow as a woman ages
Some medications, including hormone replacement therapy, can cause breast enlargement.
Some medical conditions, such as hypothyroidism and prolactinoma, can also cause breast enlargement.
Exercise can help tone the chest muscles and make the breasts appear larger
Eating a healthy diet can help maintain a healthy weight and breast size.
Surgery: Breast augmentation surgery can be done to increase the size of the breasts.