[A] study of men in their 70s found that those who avoided smoking, obesity, inactivity, diabetes and high blood pressure greatly improved their chances of living into their 90s. In fact, they had a 54 percent chance of living that long.
Their survival decreased with each risk factor, and those with all five had only a 4 percent chance of living into their 90s, according to Harvard University researchers.
Those who managed to avoid lifestyle-related ailments also increased their chances of functioning well physically and mentally two decades later.
The study followed 2,357 men for about 25 years or until death, starting in their early 70s. About 40 percent survived to at least age 90. Among survivors, 24 percent had none of the five risk factors.