Genes for Breast Size Found: Do larger breasts cause breast cancer?
By MyHealthNewsDaily Staff |
LiveScience.com – 7 hrs ago
Researchers have identified seven genetic markers linked with a woman's breast size,
according to a new study.
While it's was known that breast size is in part heritable, the study is the
first to find specific genetic factors that are associated with differences in
breast size, the researchers said.
In addition, two of these markers have previously been associated with breast cancer risk. This suggests some of the same biological
pathways underlie both normal breast
growth and breast
cancer, said study researcher Nicholas Eriksson, of 23andMe, the genetic testing
company that conducted the study.
The study alone does not provide enough evidence to link breast size to
breast cancer. But it may contribute to a better understanding of the role that
breast structure plays in breast
cancer risk, the researchers said.