According to the American Society of Clinical Oncology,

 women who experience late-onset menopause have an increased risk of uterineand breast cancer. This is due to having an increased exposure to hormones such as estrogen. As women menstruate longer, they have more ovulations which also increases the risk of ovarian cancer. Women with a long reproductive life, menarche (onset of periods) before the age of 12 years and menopause after age 55 years have an increased risk of these hormone-dependent cancers. A pooled analysis of data from more than 400,000 women found for every year older a woman was at menopause, breast cancer risk increased by approximately 3%.