Shocking before and after photos of 15 NFL players who lost a ton of weight in retirement

Valerie Macon/Getty Images

Many former athletes struggle with weight gain after their playing careers end. This is especially true among football players.

Some players are luckier and actually lose a ton of weight. In many cases, the players are now nearly unrecognizable.

One common theme among many of these players is the position they played.

Most of the players on the following pages were offensive lineman, suggesting those players do more to push their body weight to an extreme, developing dangerous habits like consuming massive numbers of calories to maintain their playing sizes.

Brad Culpepper (No. 77) was a 275-pound defensive tackle for three different teams and retired after the 2000 season.

Source: @monicaculpepper

Here is Brad Culpepper with his wife on the show "Survivor." He says it was pretty easy to lose 80 pounds because he simply stopped eating all the extra food needed to maintain his playing weight.

Source: sptimes.com

Alan Faneca was a 320-pound offensive lineman for the Steelers, Jets, and Cardinals, and he last played in 2010.