Factors that (may) affect cancer rates, that vary between countries from the top of my head: Amount of alcohol consumption, strength of the alcohol (I once rea

Factors that (may) affect cancer rates, that vary between countries from the top of my head: Amount of alcohol consumption, strength of the alcohol (I once read that only above ~15% alchohol gives you oral cancer), content of secondary alcohols like methanol, genetic factors like Alcohol flush reaction, which is known to also lead to higher cancer rates in combination with alcohol and is very common in Asia.