The biggest threat facing middle-age men isn’t smoking or obesity. It’s loneliness. As men grow older, they tend to let their friendships lapse. But there’s still time to do something about it. E-Mail Share via e-mail To Add a message Your e-mail Facebook Twitter LinkedIn Comments Print mario zucca for the boston globe By Billy Baker March 09, 2017 LET’S START WITH THE MOMENT I realized I was already a loser, which was just after I was more o