In this episode of the Brianna Approved Podcast, Dr. Brianna Diorio sits down with nitric oxide scientist Dr. Nathan Bryan to explore one of the most important and overlooked molecules in human health. Dr. Bryan breaks down why nitric oxide is essential for circulation, mitochondrial function, blood pressure, cognitive performance, sexual health, immune strength, and overall vitality.
Dr. Brianna Diorio guides the conversation through the core science—how nitric oxide is produced, why modern living disrupts it, and how lifestyle habits like mouthwash, antacids, poor diet, and low sun exposure can shut this pathway down. Dr. Bryan also shares the practical steps anyone can take to restore nitric oxide naturally, including green vegetables, sunlight, nose breathing, movement, and supporting a healthy oral microbiome.
The two also discuss the limitations of food sources, why today’s vegetables contain far fewer nitrates, how nitric oxide affects aging at a cellular level, and why this molecule sits at the center of mitochondrial health, blood flow, collagen production, and longevity. Dr. Brianna Diorio also dives into Dr. Bryan’s supplement innovations, nitric oxide test strips, and his groundbreaking nitric-oxide-based skincare for improved collagen, hydration, and cellular turnover.
This episode is both science-heavy and incredibly practical—perfect for anyone who wants to improve energy, cardiovascular health, exercise performance, skin quality, or long-term longevity through nitric oxide optimization.