Fans flooded social media defending "Aquaman" star Jason Momoa after some people criticized a shirtless picture of him.

US Weekly posted the shirtless photo of the 39-year-old while he was vacationing in Italy. USA Today says fans flooded Twitter to defend him.

The criticism opens the door for conversations around men’s body image.

Previous: Twitter users say Jason Momoa has a dad-bod

More: Wasting away: Men's eating disorders on the rise

Fifty years ago, very few doctors knew about eating disorders or how to treat them, but a steady campaign of awareness and education has brought the problem into the light.

In the 10 years between 1999 and 2009, hospitalizations involving eating disorders for male patients increased by more than 50 percent. According to the National Eating Disorders Association, men make up a quarter of people with anorexia and bulimia, and more than a third of people with binge eating disorder.

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