For heart disease, effective prevention in some patients requires medication such as statins. Exercise and diet are a great start but not always sufficient due

For heart disease, effective prevention in some patients requires medication such as statins. Exercise and diet are a great start but not always sufficient due to genetics. Cancer is quite broad. Many of the risk factors such as obesity overlap with heart disease but a lot of patients are still going to randomly get hit regardless of whether they were exposed to certain substances.