(WSET) — As interest in weight loss medications and peptide therapies continues to grow, doctors are warning consumers about the risks associated with unregulated peptides that are increasingly being marketed online for weight loss, muscle recovery, injury healing and overall wellness. Alessandro Schiavone, who has been lifting weights for the past decade, began taking peptides after developing pain in his joints and tendons. "I've been taking peptides since November," Schiavone said.