According to a paper published in the American Journal of Epidemiology on July 1
Black women who feel they've been victims of racial discrimination are more likely than their peers to develop breast cancer, a large study suggests.
The study, which followed 59,000 African-American women for six years, found that those who reported more incidents of racial discrimination had a higher risk of breast cancer.
The relationship was stronger among women younger than 50, researchers found. This finding is particularly interesting, they note, in light of the fact that, unlike the case with older women, breast cancer is more common among young black women than young white women.
It's possible that racial discrimination plays some role, according to the researchers, led by Dr. Teletia R. Taylor of Howard University in Washington, D.C.
Note the use of weasel words suggest and possible.
Naturally there is no mechanism to explain this result. But given enough grant money I'm sure some convoluted explanation will be forthcoming.
In the meantime the list of things that cause cancer grows.