I’ve Been A Cardiovascular Scientist For 30 Years… ED Is A Warning Sign of Heart Disease

Dr. Nathan Bryan is a nitric oxide biochemist and the Founder, Chairman, and CEO of Bryan Therapeutics, with over 25 years of research and 100+ peer-reviewed papers on how the body makes this molecule. He's the author of The Secret of Nitric Oxide: Bringing the Science to Life. In this conversation, he explains how everyday habits like mouthwash, fluoride toothpaste, and antacids can quietly shut down blood flow, why erectile dysfunction can be an early warning sign of heart disease, and the daily routine he follows to protect his own vascular health.

In this episode we discuss:

(0:00) Trailer

(1:48) Mouthwash and Heart Health: The Hidden Link
(2:54) How Antiseptic Mouthwash Raises Blood Pressure in 7 Days
(8:53) Tongue Scraping vs. Antiseptic Mouthwash
(14:13) Why Fluoride-Free Toothpaste Matters for Blood Flow
(15:47) What Is Nitric Oxide? The "Miracle Molecule" Explained
(19:20) Why ED Is the "Canary in the Coal Mine" for Heart Disease
(23:31) Testosterone, TRT, and Nitric Oxide: Which Comes First?
(28:25) Daily Cialis After 40? Dr. Bryan Responds to Huberman
(34:19) How to Test Your Nitric Oxide Levels
(37:50) Dr. Bryan's Warning About Antacids and PPIs
(42:30) Mouth Taping and Nasal Breathing for Better Blood Flow
(45:54) Best Foods for Nitric Oxide (And Why Organic Falls Short)
(54:43) Sauna and Cold Plunge: Boosting Blood Flow Through Hormesis
(58:18) Dr. Bryan's Daily Non-Negotiables: Fasting, HIIT, and Sauna
(1:01:03) Why Sugar Shuts Down Nitric Oxide Production

Learn more about Dr. Nathan Bryan here:

Website: https://n1o1.com

Bryan Therapeutics: https://bryantherapeutics.com

Instagram: https://www.instagram.com/drnathansbryanX: https://x.com/drnitric

LinkedIn: https://www.linkedin.com/in/drnathansbryan

YouTube: https://www.youtube.com/@drnathansbryannitricoxide

Book: The Secret of Nitric Oxide: https://nathansbook.com

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