Something like 60% of cancers are due to genetics - you inherit a faulty gene or a spontaneous mutation gives you one.
When it comes to environmental causes, tobacco smoke and diet make up the vast majority. Pollution barely registers.
When it comes to environmental causes, tobacco smoke and diet make up the vast majority. Pollution barely registers.
Prostate cancer and breast cancer rates are low in Osaka, but in Japanese people living in Hawaii the rates match the Hawaiian population.
Japanese people living in Japan have high rates of stomach cancer, but those rates drop for Japanese people living in Hawaii.