Peptide World Congress 2026

Dr. Siobhan Newman is the founder and chief medical officer of Newman MD LifeCare. Board-certified in Emergency Medicine and a Fellow in Family Medicine, she brings over 30 years of experience treating complex medical emergencies and chronic diseases. She serves as Cellular Medicine Faculty with Seeds Scientific Research and Performance.

Her practice, Newman MD LifeCare, transforms cutting-edge research into powerful clinical solutions through regenerative therapies and preventative medicine, focusing on healthy aging, performance, and neurodegenerative care.

Kelli Musa is the practitioner women find after everyone else has failed them. A functional medicine clinician with two decades of clinical practice, Harvard nutrition credentials, and SSRP certification, Kelli is the founder of Peptides First and the architect of The Metabolic Code, a clinical framework rebuilding how women are evaluated, treated, and tracked through midlife. Her thesis is clinical and inconvenient. Metabolism is the driver. Weight, mood, energy, and hormones are downstream of it. Most women aren’t broken. They’ve been read in fragments by a system that runs five tests in twelve minutes and calls it care. She knows the cost of that system personally. Her mother, Carrie, died at forty-three after being dismissed for years. That story is not a grief narrative. It is the clinical case that built the practice. Today, Kelli has helped thousands of women navigate perimenopause, post-pill recovery, and metabolic adaptation, and her practice does not compete with med spas. It replaces them. She speaks nationally on peptide therapeutics, female longevity, and metabolic medicine, and is currently writing her first book, Ms. Managed.

Anthony Castore is a leading force in performance optimization, blending 30+ years of boots-on-the-ground coaching with cutting-edge cellular medicine. As one of the only non-physicians named a Fellow of the SSRP Institute, Anthony bridges advanced science with real-world strength, recovery, and human performance. An educator, elite strength coach, and lifelong athlete, Anthony is known as the coach behind the coaches — trusted by elite athletes, executives, physicians, and high performers when results matter most. As founder of D.R.I.V.E. Longevity Solutions and creator of The Castore Method, he integrates advanced training stimulus, peptide protocols, mitochondrial optimization, redox balancing, and targeted supplementation into highly personalized strategies. Mentored by legends like Charles Poliquin and Dr. Eric Serrano, Anthony now teaches the next generation of strength coaches and cellular medicine practitioners how to think deeper, coach smarter, and build protocols that actually work. His style is direct, precise, and grounded: no fluff, no gimmicks, just high-integrity science and respect for the body’s intelligence. Whether the goal is peak performance, fat loss, recovery, or long-term health, Anthony helps people build resilient bodies that perform — and don’t break.

Lauren Fitzgerald, MD (“Dr. Fitz”) is a physician, entrepreneur, and wellness advocate dedicated to helping patients reclaim their health through an integrative, optimization-focused approach. A “recovering anesthesiologist,” she left the operating room in 2016 after years of practice in Texas, Oklahoma, and Japan to focus on prevention, longevity, and root-cause medicine. As Founder and CEO of Larimar Med in St. Charles, Illinois, Dr. Fitzgerald has built a “one-stop shop” for total body wellness that blends functional medicine, bioidentical hormone optimization, biohacking, advanced aesthetics, and IV nutrition therapies. She is known for her ability to translate complex science into practical, faith-aligned guidance, empowering patients to actively participate in their own healing and long-term vitality. A sought-after speaker, educator, and podcast guest, Dr. Fitzgerald uses social media and digital education to expand access to evidence-informed wellness, with a special focus on women’s health, hormones, and healthy aging. Grounded in her medical training and driven by a belief that “investing in you is the best investment you’ll ever make,” she continues to champion a model of healthcare that prioritizes optimization over disease management.

Dr. Lindsey Berkson, MA, DC, DACBN, CNS, is a leading voice in functional medicine with a focus on hormones, environmental health, cancer, gut health, and nutrition. Known for translating complex science into engaging, creative language, she has spent decades lecturing, researching, and writing in the hormone and functional medicine space. She is the author of 21 books, including Healthy Digestion the Natural Way, which sold one million copies, and Hormone Deception, the groundbreaking work that led to her appointment as a distinguished hormone scholar at the Center for Bioenvironmental Research at Tulane, where she collaborated with scientists who discovered the first estrogen receptors. Her book Safe Hormones, Smart Women was the first to re‑analyze the misinterpreted Women’s Health Initiative. She co‑held one of the earliest patents on bioidentical hormones and has published original research on nitric oxide and dialysis, including developing a wound‑healing drug for immunosuppressed patients. A DES daughter and cancer survivor, Dr. Berkson often shares how hormones have shaped her life and her mission. Her current work centers on cancer, immunity, and innovative hormone molecules such as 2‑MEO, which she presented globally in 2025. She lectures worldwide, blending rigorous science with humor from her stand‑up background.

Personal Trainer | Fitness Entrepreneur | Author | Podcast Host Sal Di Stefano is a nationally recognized fitness expert, entrepreneur, and published author with over 25 years of experience in the health and fitness industry. Beginning his career as a personal trainer at just 18 years old, Sal quickly rose to become the youngest General Manager in 24 Hour Fitness history by age 19, overseeing a team of 40 employees and grand-opening some of the largest fitness clubs in California's Bay Area. Driven by a passion for evidence-based wellness, Sal went on to open his own integrative fitness and wellness studio, offering services ranging from personal training and nutritional counseling to hormone testing and gut health consulting. He is the designer of the Muscular Adaptation Programming System (MAPS) and co-founder of Mind Pump Media, home to the world's #1 fitness podcast, Mind Pump: Raw Fitness Truth, which generates over 2 million downloads per month. In 2021, Sal published The Resistance Training Revolution, a science-backed guide to fat loss and longevity. He holds eight national fitness certifications and a professional bodybuilding card.

Stephen McCain is a two-time Olympic gymnast, World Champion Silver Medalist, and Hall of Fame inductee who has evolved into a global leader in human longevity and performance. At 51, he defies aging norms, demonstrating that optimal health is possible at any stage of life.

After retiring from elite competition, Stephen faced declining health and a loss of purpose. This sparked a personal transformation rooted in science and discipline. With a background as a UCLA pre-med student, NASM-certified trainer, corrective exercise specialist, and nutrition coach, he developed a holistic framework that merges exercise science, functional medicine, and cellular health.

Stephen now empowers others to optimize their biology through his podcast, where he interviews world-class doctors, researchers, and high performers. He is the co-founder of PLAIS.ai, a cutting-edge longevity and A.I. clinic, and Club Exosome, a regenerative therapy destination. He also speaks regularly at top-tier medical and anti-aging conferences and was recently featured in the Amazon docu-series Biohack Yourself.