3 ms·

What is this about having fewer kids contributes to cancer?

• oafitupa 13y ago
  I was wondering the same thing.
• trillium 13y ago
  For women, certain cancers are less likely if you have a child for a variety of factors, including different hormonal states.
• araneae 13y ago
  Breast cancer is one of the more common cancers in woman. Having your first pregnancy before 20 versus after 35 lowers your chance of breast cancer by 50%. For each birth, breast cancer risk decreases by 7%. For each year of breast feeding, breast cancer risks decreases by 4% Source: http://www.cancer.gov/cancertopics/pdq/prevention/breast/healthprofessional#Section_378 http://www.cancer.gov/cancertopics/pdq/prevention/breast/hea... The mechanism isn't entirely worked out, but the hypothesis is that immature breast cells are more likely to cause cancer, and that pregnancy and breastfeeding cause breast cells to mature into cells that are less likely to become cancerous. This paper explores the mechanism more: http://erc.endocrinology-journals.org/content/14/4/907.full http://erc.endocrinology-journals.org/content/14/4/907.full
  • aestra 13y ago
    Yet hormonal contraceptives decrease your risks of ovarian and endometrial cancer. Wonder if some of the risks can cancel each other out. http://www.cancer.gov/cancertopics/factsheet/Risk/oral-contraceptives http://www.cancer.gov/cancertopics/factsheet/Risk/oral-contr...