According to new research, men who are in the normal weight range in middle life and then let their weight creep up have a better life expectancy than those whose BMI remains at the baseline of 22-25.

This finding from the Oslo Study of 5239 men born in 1923-1932 should not come as a surprise because it confirms what other cohort studies have shown.

Unfortunately, men who are already fat by middle age, or who subsequently lose weight, have a higher than baseline mortality rate.

Reference

Age and Ageing 2015, doi:10.1093/ageing/afu202.