Researchers from the University of Michigan revealed that some commonly prescribed birth control pills may quadruple levels of synthetic estrogen and progesterone hormones. Both of which are thought to play a part in stimulating breast cancers to grow, which is why some breast cancer patients are prescribed hormone therapy to block their effects on cancer cells. Another formulation also resulted in 40 percent higher exposure to ethinyl estradiol, a synthetic version of oestrogen. But, that it’s also important for companies to design birth control pills in a way that they do not contribute to a greater risk of breast cancer. Cancer Research UK currently advises that as little as one percent of breast cancers in women are a result of oral contraceptives.

Source: Hindustan Times July 02, 2017 10:41 UTC