Celebrities have long set the standards for everything from fashion and hairstyle trends to don’t-need-must-have material possessions, and more. All that inspiration for goal-setting can be frivolous and fun, but when it comes to the effects of widespread celebrity influence on health and wellness, the stakes are a lot higher. 

Unfortunately, stars have been known to lend their name to a slew of often-questionable, sometimes-hazardous products, programs, pills, and potions designed to create a healthier you. Before blindly aligning with the next celebrity-backed diet or fitness item you see in your social media feed, learn about five of the biggest ineffective (and potentially dangerous) offenders.