Cysts are fluid-filled sacs that can develop in breast tissue. Although the exact cause of breast cysts is not known, they are thought to develop due to hormonal changes in the body, particularly changes in estrogen levels.
Estrogen is a hormone that regulates the menstrual cycle and plays a key role in breast development. During the menstrual cycle, estrogen levels fluctuate, which can cause the breast tissue to swell and become tender. This swelling can create small pockets of fluid that can form cysts.
Breast cysts are more common in women who are premenopausal or perimenopausal, when hormonal changes are more pronounced. They can also occur in women who are taking hormone replacement therapy (HRT) or oral contraceptives.
In most cases, breast cysts are benign and do not increase the risk of breast cancer. However, if you notice a new lump or change in your breast tissue, it’s important to get it checked out by a healthcare professional.
