All hormone contraceptives, including progestagen-only “minipills,” carry a small “excess risk” of breast cancer, according to a new study by researchers at the University of Oxford, but the overall risk remains low. […] This can serve as a more sustainable and affordable option for long-term pain management for conditions like endometriosis. The minipill is also cited as a safe option for women who are breastfeeding.
Source: wiktionary