Is it possible to separate the roles of our genetic inheritance from our environment? Genome-wide association studies (GWAS) and polygenic scores have tried to look at the genetic component. But it turns out that polygenic scores vary as much with our "not inheritable characteristics" -- like years of schooling -- as they do with our race or ethnicity.
There are reports that as little as one piece of bacon a day will increase your risk of colon and rectal cancer. A closer look at the study suggests that while bacon is certainly a risk factor in being a pig, its impact on humans may not be as great as the media claims.