There’s evidence that suggest depression is as common among men as women.

Researchers have found that one third of both men and women met the criteria for a depression diagnosis when traditional and alternative symptoms such as aggression and sleep problems were taken into account.

The University of Michigan’s Lisa Martin is the study’s lead author.

She says about 16 percent of Americans currently meet the criteria for depression.

Previous research found that women are about twice as likely as men to be diagnosed with depression.

The findings are published in the jounral, JAMA Psychiatry.