NAD+ Explained: Energy, Aging, and What Actually Works

Can NAD+ boosters give you more energy or help you live longer? This video explains what NAD+ actually does, how NMN and NR differ from NAD+ IVs, and what human studies show about endurance, brain fog, sleep, insulin sensitivity, and aging. We follow the biology from electron-carrying delivery trucks to cellular repair, then separate promising mechanisms from demonstrated benefits. What's covered: - NAD+, NADH, hydride transfer, mitochondria, and ATP - NMN and NR: the raw materials your body uses to make NAD+ - Why raising blood NAD+ is different from improving health - Fatigue versus endurance, and the amateur-runner trial - Brain fog, focus, sleep, and the circadian clock - Muscle insulin sensitivity and the prediabetic-women trial - Sirtuins, PARPs, CD38, cellular maintenance, and the longevity hypothesis - What the NAD+ IV pilot actually measured - Common supplement doses and why there is no established anti-aging dose 00:00 - More Energy and a Longer Life? The NAD+ Claims 03:11 - What NAD Actually Is 04:05 - Nicotinamide Adenine Dinucleotide, Explained 04:53 - NAD+, NADH, and the Delivery Truck Analogy 06:33 - NMN and NR: How We Raise NAD+ 08:19 - The Evidence Ladder 09:20 - Energy, Endurance, and the Bigger Battery Idea 11:19 - Feeling Less Tired vs. Performing Longer 12:55 - The Amateur-Runner Trial and Ventilatory Threshold 14:24 - Brain Fog, Focus, and Sleep 15:46 - Metabolism and Insulin Signaling 17:04 - The Prediabetic-Women Trial 18:30 - When NAD Might Be a Bottleneck 19:09 - Aging, Sirtuins, PARPs, and CD38 20:29 - Animal Results and the Human Lifespan Question 22:31 - NAD+ IVs: What the Blood-Level Study Shows 24:04 - Quick Recap 24:20 - Supplements, Common Doses, and the Takeaway NAD+ is one of dozens of therapies moving fast. Once a month I send the biggest news in peptides and emerging therapies, plus the best articles and threads I found. Sign up here (it's free): https://www.bioavailable.io/?utm_source=youtube&utm_medium=organic_video&utm_campaign=nad&utm_content=nad_description#newsletter-signup Sources: 2026 systematic review of human and rodent NAD-related interventions: https://pubmed.ncbi.nlm.nih.gov/41655607/ NMN, NR, and nicotinamide: head-to-head blood NAD+ study (2026): https://www.nature.com/articles/s42255-025-01421-8 Fatigue and functional performance: systematic review and network meta-analysis (Gao et al., 2026): https://pmc.ncbi.nlm.nih.gov/articles/PMC13593507/ NMN and aerobic capacity in amateur runners (2021): https://pubmed.ncbi.nlm.nih.gov/34238308/ NMN, walking speed, and sleep quality in older adults (2024): https://pmc.ncbi.nlm.nih.gov/articles/PMC11336149/ NMN and muscle insulin sensitivity in prediabetic women (2021): https://pubmed.ncbi.nlm.nih.gov/33888596/ NIH explanation of the muscle insulin-sensitivity results: https://www.nih.gov/news-events/nih-research-matters/supplement-improves-glucose-metabolism-womens-muscle CD38, age-related NAD decline, and mitochondrial dysfunction in mice (2016): https://pubmed.ncbi.nlm.nih.gov/27304511/ NAD+ biology and clinical translation: https://www.nature.com/articles/s43587-025-00947-6 Six-hour NAD+ IV pharmacokinetic pilot (2019): https://www.frontiersin.org/journals/aging-neuroscience/articles/10.3389/fnagi.2019.00257/full Oral NMN: safety and metabolic-outcomes review (2026): https://pubmed.ncbi.nlm.nih.gov/42514320/ NR dosing, safety, and blood NAD+ in healthy overweight adults (2019): https://pubmed.ncbi.nlm.nih.gov/31278280/ Disclaimer: this video is education, not medical advice. The doses discussed describe supplement use and research protocols; they are not a recommended anti-aging regimen. Raising blood NAD+ does not establish a health benefit, and long-term benefits and risks remain uncertain. Discuss supplements or IV treatments with a qualified clinician who knows your medical history. #NAD #NMN #Longevity