#90 The Metabolic Signal You’re Probably Ignoring with Jari Närhi: NAD Testing, Longevity & Cellular Health

Jari Närhi, Co-Founder and CEO of NADMED, a University of Helsinki spin-out revolutionising how we understand and monitor NAD levels. With a background in mechanical engineering and a career spanning medtech, diagnostics and hospital operations, Jari brings a unique systems-level view on cellular health and innovation in clinical testing.In this episode, we explore why NAD (nicotinamide adenine dinucleotide) is so vital for human health, from fuelling ATP production to supporting DNA repair and immune regulation. Jari breaks down the science of NAD+, NADH and glutathione and why traditional lab methods like mass spectrometry have long failed to make NAD testing practical or scalable. We discuss the real-world impact of measuring NAD levels, from chronic illness to long COVID, and how this simple test could become as common as checking haemoglobin in the future.Jari also opens up about NADMED’s regulatory journey, the ethical dilemmas of DIY supplementation, the rise of longevity tech, and how AI will transform personalised diagnostics through pattern recognition in metabolic biomarkersTimestamps:[00:00:45] Age vs Disease: What Really Impacts NAD Levels[00:02:28] Why NAD Is Essential for Life[00:03:52] How NAD Decline Signals Deeper Health Issues[00:05:05] From Niacin to NAD: Understanding the B3 Pathway[00:06:00] CE‑Marking and Regulatory Hurdles for Diagnostics[00:06:59] How NADMED Made Testing Faster and More Accessible[00:09:02] The Ethics of Supplementation Without Testing[00:10:16] The VC Path: Funding Deep‑Tech MedTech Innovation[00:14:02] Metabolic Fingerprints and Personalised Medicine[00:17:11] AI, Data and the Future of Longevity DiagnosticsConnect with Jari - https://www.linkedin.com/in/jari-n%C3%A4rhi-38b44/ Learn more about NADMED - https://www.nadmed.com/ Get in touch with Karandeep Badwal - https://www.linkedin.com/in/karandeepbadwal/ Follow Karandeep on YouTube - https://www.youtube.com/@KarandeepBadwalSubscribe to the Podcast