Uncovering the Potential of Nitric Oxide in Treating Erectile Dysfunction, with Dr. Nathan Bryan

2 Feb 2023 · 69 min
1:09:20

Interview (Feb 2, 2023) with Dr. Nathan Bryan (nitric oxide researcher) on Dr. Anne Truong's Sexual Health for Men podcast. Key points: nitric oxide (NO) is a short-lived gaseous signaling molecule central to vascular dilation, oxygen delivery, immune and nervous system function, and therefore sexual function (ED). Humans make NO via endothelial nitric oxide synthase (eNOS) using L-arginine (which declines with age and uncouples with oxidative stress) and via a dietary nitrate→nitrite→NO enterosalivary pathway that requires leafy vegetables, oral nitrate-reducing bacteria, and stomach acid. Common disruptors include poor diet, mouthwash/fluoride, antibiotics, proton pump inhibitors/antacids, and genetic SNPs (e.g., MTHFR). Many over-the-counter L-arginine/L-citrulline supplements are ineffective or harmful in endothelial dysfunction. Dr. Bryan describes consumer products his team developed (a NO-generating lozenge, NO2U, and a fermented beet powder “NO Beets”), intended dosing/safety (do not use too frequently; typical lozenge spacing ~3–4 hours; peak physiological effects ~5–20 minutes), and recommends lifestyle measures (leafy greens, sunlight/infrared, exercise, sauna, intermittent fasting, avoid mouthwash/antacids). He notes ongoing clinical programs and some published studies referenced during the conversation.

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