Also on the "mainstream/obvious list":

Being obese is bad. Being overweight probably bad. Being underweight is probably also bad. Vitamin D good. Getting enough micronutrients in general good. Excessive red meat consumption probably bad. Excessive processed meat consumption bad. Laughter good.

(That's all I can think of off the top of my head that's not yet been mentioned.)

Edit: Oh! Forgot one. Sunburn bad.