How pregnancy and breastfeeding may reduce women's cancer risk

Pregnancy, childbirth and breastfeeding may help lower the risk of certain cancers in women, according to medical research. Oncologist Basir Bammatov highlights that hormonal changes during these periods can reduce the likelihood of breast and ovarian cancer. However, experts stress that these factors do not completely remove the risk of developing cancer later in life.

Studies suggest that the protective effect is strongest when pregnancy occurs before the age of 25. Breastfeeding, particularly in the early months of a child's life, also plays a key role. Research shows that each 12 months of breastfeeding can reduce breast cancer risk by around 4.3%. For women who breastfeed for more than a year, the risk may drop by up to 23%, depending on the number of children they have.

The findings come from meta-analyses covering data from 30 countries. However, no precise global figures exist on how many women currently benefit from this reduced risk. The studies do not identify specific regions where these protective effects are most common. While these hormonal changes offer some defence, doctors emphasise that they do not guarantee full protection against cancer. Other risk factors, such as genetics and lifestyle, still influence a woman's overall likelihood of developing the disease.

The research confirms that early pregnancy and prolonged breastfeeding can lower cancer risks. The most significant reductions appear linked to childbirth before 25 and extended nursing periods. Despite these benefits, women are still advised to follow general cancer prevention guidelines, as no single factor can eliminate the risk entirely.