Fortune's Ben Weiss buys unregulated peptides with crypto from a Chinese seller named Louise to trace the booming gray-market "looksmaxxing" economy, in which young men inject peptides to become more attractive. Chainalysis pegs vendors' first-quarter 2026 crypto intake at $32 million, up 700% year over year, projects over $100 million in 2026 volume, and reports some fentanyl-precursor makers pivoted to peptides. Health Secretary Robert F. Kennedy, Jr. told Joe Rogan he is a big fan of peptides.