In this episode, I explain the major categories and types of peptides currently in use for therapeutic purposes. I discuss peptides for improving tissue rejuvenation and repair, promoting longevity, improving muscle growth and fat loss, and boosting mood, vitality, and libido. I explain the biology of how these peptides work and both their potential benefits and risks. I also discuss peptide sourcing, dosages, cycling, routes of administration, and how peptides work in combination.  This episode will help you better understand the rapidly expanding landscape of peptide therapeutics and how to evaluate if specific peptides might be advantageous towards achieving your physical or mental health goals. For show notes, including referenced articles and additional resources, please visit hubermanlab.com. Use Ask Huberman Lab, our new AI-powered platform, for a summary, clips, and insights from this episode. Thank you to our sponsors AG1: https://drinkag1.com/huberman Mateína: https://drinkmateina.com/huberman Levels: https://levels.link/huberman Joovv: https://joovv.com/huberman LMNT: https://drinklmnt.com/huberman Momentous: https://livemomentous.com/huberman Timestamps (00:00:00) Peptides (00:03:20) Sponsors: Mateina, Levels & Joovv (00:07:44) What is a Peptide? (00:12:06) Peptide Sourcing, Lipopolysaccharide (LPS) (00:14:48) Rejuvenation & Tissue Repair: BPC-157, Angiogenesis (00:21:50) BPC-157 & Tissue Injury; Mode of Delivery (00:27:53) BPC-157: Safety, Doses, Cycling, Tumor Risk (00:35:16) Sponsor: AG1 (00:36:43) Tissue Repair: Thymosin Beta-4, TB-500 (00:40:49) Growth & Metabolism: Growth Hormone, IGF-1, Risks (00:45:25) Secretagogues, Sermorelin, Tesamorelin, CJC-1295 (00:52:21) Sponsor: LMNT (00:53:44) Ipamorelin, Hexarelin, GHRP-3, MK-677; Risks & Timing (00:58:69) Peptides for Growth Hormone & IGF-1, Risk; Combinations & Dosing (01:06:12) Longevity: Thymosin Beta-4, Epitalon (Epithalon) (01:12:09) Vitality: Melanotan, PT-141 (Vyleesi), Risks (01:17:21) Vitality: Kisspeptin (01:21:46) Peptides, Potential Benefits, Side-Effects & Risks (01:24:19) Zero-Cost Support, Spotify & Apple Reviews, Sponsors, YouTube Feedback, Momentous, Social Media, Neural Network Newsletter Disclaimer