Full show notes: bengreenfieldlife.com/lnkyal/ In this Best of LIFE Network episode, two-time guest Kyal Van Der Leest—a naturopath, nutritionist, supplement formulator, and founder of LVLUP Health—and I dive into the rapidly evolving world of peptides and their real-world applications. You’ll learn how these compounds can support tissue repair, cellular energy through nicotinamide adenine dinucleotide (NAD) pathways, cognitive performance, and sexual health—when formulation, delivery method, and regulation are properly understood. We cover: - Peptide delivery and bioavailability—how amino acid chain length affects absorption, why some peptides require injection, and when oral formulations can work with the right design. - Regulation, safety, and quality control—Australia’s peptide scandal, current injectable bans, recent U.S. Food and Drug Administration (FDA) actions, and why manufacturing standards matter. - Brain resilience and cognitive performance—7,8-dihydroxyflavone (7,8-DHF), Dihexa, brain-derived neurotrophic factor (BDNF) signaling, and strategies to support long-term neurological health. - Recovery, tissue repair, and performance—approaches that promote tissue repair, cellular energy, and muscular adaptation, including oral TB-4 fragments, BPC-157, guanidinoacetic acid versus creatine, and methylation support. There’s been no shortage of questions in my DMs about peptides lately—this episode addresses the most common ones. LIFE Network: https://joinlifenetwork.com Ben Greenfield Life Website: https://bengreenfieldlife.com/ Ben Greenfield Life Podcast: https://bengreenfieldlife.com/podcast/ Ben Greenfield Books: https://shopbengreenfieldlife.com/collections/books Instagram https://www.instagram.com/bengreenfieldfitness/ Facebook https://www.facebook.com/BGFitness X https://twitter.com/bengreenfield TikTok https://www.tiktok.com/@bengreenfield 00:00 "Peptides, Optimization, and Gut Health" 04:16 Breaking Free: Health Journey Insights 08:19 Biohacking, Peptides, and Mockery 11:36 Future of Medicine Advocacy 16:44 "Peptide Intake and Zinc Tips" 20:16 "Peptides and Oral Absorption" 24:17 "GHK Copper for Anti-Aging" 26:24 "TB4 vs. TB500 Explained" 30:56 "GAA: A Superior Creatine Precursor" 31:53 "Double-Edged Effects of GAA" 37:06 "NACet: Superior Glutathione Booster" 40:56 "Tudka & Taurine for Liver" 41:53 "Triple Mold Detox Strategy" 47:38 "Lorazotide Reformulation Discussion" 48:20 "Zonulin's Role in Tight Junctions" 51:36 "Testosterone Trends and Risks" 58:02 Affiliate Disclosure and Authenticity 58:48 Ethical Product Recommendations Only