Goq, I recommend doing some research on Vitamin E. Last time I checked it was controversial — some studies showed it increased the rate of death, perhaps by increasing the likelihood of a heart attack (I don’t remember exactly).
Vitamin D is one of the most important ones. Everyone should take several times the recommended daily dosage. (Especially people who live in the North and/or don’t spend much time outdoors). There’s also a lot of evidence it reduces the risk of major cancers, and various other diseases as well.
A daily baby aspiring also has been shown to prevent many cancers, as well as reducing the risk of a heart attack, so it’s probably a good idea as long as you don’t have any counterindiciations, like stomach bleeding problems. (That said ask your doctor…)