Protein bars, shakes and pre-workout mixes are often used to maximize results at the gym. The supplements are also associated with muscle dysmorphia, a study shows.

A Canadian study, published Wednesday in the journal PLOS Mental Health, finds that young people who consume multiple muscle-building products are more likely to show symptoms of

Protein shakes and pre-workout mixes are popular among gym-goers, but they might signal a deeper issue for some young adults.

The study also shows that people may be using supplements in place of anabolic steroids, which have been found to be harmful. However, the authors point out that not all supplements are safe. The study was published Wednesday in the journal PLOS Mental Health.