(Photo: Moses Robinson/Getty Images)

Ruben Studdard is on health watch, insiders close to the singer say. The American Idol winner, dubbed the "Velvet Teddy Bear" due to his husky frame, has tipped the scale at nearly 400 pounds in recent months. Now, experts say if he doesn't put himself on a diet, the 33-year-old may not live to see the next decade.

“It’s diet or DIE for Ruben,” an source told the National Enquirer, explaining that the R&B singer started really packing on the pounds following his messy divorce from his wife of three years, Surata “Zuri” McCants, and also stress over financial troubles.

Doctors Gabe Mirkin and Craig Title, neither of whom have treated Studdard, weighed in on his health crisis. Mirkin tells the Enquirer that “Ruben’s weight is extremely unhealthy and dangerous,” while Title declares there is “a grave concern that Ruben will not make it to his 40th birthday at the rate he’s going.”

Where's that Weight Watchers contract when you need it? 

BET.com is your #1 source for Black celebrity news, photos, exclusive videos and all the latest in the world of hip hop and R&B music.

Click here to subscribe to our newsletter.