Scott responds to various comments on his article about supplement labeling, addressing concerns about the industry and providing additional context and analysis. Longer summary

This post is a highlights reel of comments on Scott's previous article about supplement labeling. It covers various points raised by commenters, including skepticism about the supplement industry, concerns about heavy metal contamination, and a defense from the founder of LabDoor. Scott responds to each comment, providing additional context, analysis, and sometimes his own perspective on the issues raised. The post touches on topics such as the efficacy of supplements, the trustworthiness of supplement testing companies, and the potential risks associated with certain types of supplements. Shorter summary

Scott Alexander investigates the reliability of dietary supplements, finding that while issues exist, most are not completely fake as some media reports claim. Longer summary

Scott Alexander examines the trustworthiness of dietary supplements, debunking widespread claims that most are completely fake. He analyzes studies, consumer lab reports, and industry insider accounts to conclude that while there are issues in the supplement industry, outright fraud is rare, especially for common vitamins and minerals. More complex botanicals and trendy supplements may have more variability, but complete absence of active ingredients is uncommon. Scott suggests consumers should be discerning, especially with lesser-known products, but notes that for many supplements, precise dosing may not be critical. Shorter summary