We know most cancers are preventable and caused by our lifestyle/environment
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2515569/
Don't smoke, don't drink alcohol, avoid smoked food, avoid processed red meat, avoid plastic food containers/beverage containers, buy bio food or food which has grown with minimal amount of pesticide
Exercise, that'll help not being overweight/obese/diabetic
Get vaccinated against hpv (you're probably too old for that one)
Don't live in a polluted area/city center, avoid owning furniture's that release toxic gases (a lot of things treated to be fireproof or fire resistant are awful)
Wear sunscreen or long clothes, get your weird moles checked
At the end of the day we all know it deep down, you can easily prevent a lot os health issues by not being overweight/obese and avoiding alcohol/cigarettes