'Grandpas' got together to help kids. Scientists say it boosts the elders' health, too
Older men can find themselves isolated after retirement. Volunteer groups like Grandpas United are good for both physical and mental health.


Older men can find themselves isolated after retirement. Volunteer groups like Grandpas United are good for both physical and mental health.
(Image credit: Ashley Milne-Tyte for NPR)