By Andrew M. Seaman (Reuters Health) – Aerobic fitness is generally tied to a longer life, but the same can’t be said for obese people, according to new research. In a study of nearly 1.3 million young Swedish men, the least fit normal-weight men were still less likely to die over the next few decades than the most fit of the obese men. The new findings suggest it’s more important to be a normal weight at a young age than it is to be fit, said senior author Peter Nordstrom, of Umea University in Sweden.