Do the health benefits of fitness overpower the health problems of fatness? Yes, to a certain extent. People who are physically fit live longer than unfit people. Fitness helps counter fatness, but not completely--
Data from 650,000 people who were followed for 10 years indicates physically fit but obese people live longer than unfit obese -- but fit-obese do not live as long as fit-lean people.
Compared to active-lean people, here’s how much shorter your life will be if you are obese:
-- 3.2 years earlier death for the active-obese
-- 4.1 years earlier death for the inactive-lean
-- 6.0 years earlier death for inactive-obese.
Even if you are fit, you still need to be active throughout the day, not just during the one hour of purposeful exercise. Fit people who sit too much hurt their health, so try not to be a sedentary athlete! Park your car in the far end of the lot. Take the stairs, not the elevator, etc.
If you (or your loved-ones) are in the unfit-inactive-obese category, get active! Small steps contribute to a healthier, higher quality life-journey.