Why do so many patients with textbook risk factors still struggle with high blood pressure, fatigue, and poor circulation even after the obvious fixes? On this episode of Functional Medicine for Real-World Impact, host Tracy Harrison makes the case that nitric oxide challenges are often misunderstood when practitioners focus only on production.
Tracy reframes nitric oxide and hypertension as a story about loss, not just lack. She explains why some patients may be making nitric oxide, but losing too much of it through oxidative stress, inflammation, poor oxygenation, metabolic dysfunction, toxicity, or other upstream drivers. This distinction changes how practitioners can think about endothelial dysfunction treatment, especially in patients who are not responding to standard nitric oxide support.
She also addresses factors that are easy to overlook in clinical practice. eNOS uncoupling can turn the enzyme meant to support nitric oxide production into one that contributes to oxidative stress. Tetrahydrobiopterin (BH4) deficiency can block nitric oxide synthesis in a separate, often overlooked way. Tracy also unpacks the oral microbiome’s role in nitric oxide production and explains how something as routine as mouthwash may interfere with a patient’s progress.
This conversation gives practitioners a more complete map of nitric oxide deficiency causes and a reason to look upstream before reaching for another supplement.
Episode Breakdown:
00:00 Nitric Oxide Nuances Practitioners Need to Know
01:35 Five Early Signs of Impaired Nitric Oxide Signaling
06:59 Two Pathways the Body Uses to Make Nitric Oxide
09:24 Why Nitric Oxide Loss Matters More Than Production
14:12 How eNOS Uncoupling Triggers Oxidative Stress
17:18 Tetrahydrobiopterin (BH4) and Nitric Oxide Synthesis
19:24 Oral Microbiome and Nitric Oxide Production
23:49 Nitric Oxide's Role in Mitochondria and Brain Health
26:11 Building a Clinical Framework for Nitric Oxide Support
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