Country music star Zac Brown's weight-loss plan includes gaming, IV drips, and several foods he says he won't eat again

Zac Brown says he weighed 265 pounds at his heaviest. He's now down to around 200 pounds. James Gilbert/Getty Images Zac Brown, 46, says he doesn't consume gluten, dairy, sugar, or alcohol. He also gets regular NAD drips and has a trailer gym inspired by a tip from Bruce Springsteen. He says he…