Once we had followed our men all the way into their 80s, we wanted to look back at them at midlife and to see if we could predict who was going to grow into a happy, healthy octogenarian and who wasn't.
Da vi havde fulgt mændene til de var i deres 80'ere, kiggede vi tilbage på midten af livet for at se om vi kunne forudse hvem der ville blive en lykkelig og sund firsårig og hvem der ikke ville.