Is Mass Gainer 18+? Exploring Age, Safety, and Alternatives
                                
                                
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                                    4 min read                                
                            
                                According to a 2020 study from the Harvard T.H. Chan School of Public Health, muscle-building supplements can be harmful for teenage boys, with many experts recommending caution for those under 18. This raises a critical question for young fitness enthusiasts: is mass gainer 18+?