Nitric Oxide: The Holy Grail Of Inflammation & Disease - Fix This For Longevity | Dr. Nathan Bryan
What this video covers
Lugavere’s most-watched upload — over 2.4 million views — is this interview with Dr. Nathan Bryan, introduced as an international leader in nitric oxide biochemistry with two decades in the field and dozens of patents. The episode presents nitric oxide as a master signaling molecule governing blood flow, vascular tone, mitochondrial function, immune defense, and sexual performance, and argues that its decline with aging, poor diet, and medications leaves people more vulnerable to hypertension, insulin resistance, dementia, and cardiovascular disease.
Bryan walks through the two main pathways the body uses to make nitric oxide and, more provocatively, the everyday habits he says shut them down: antiseptic mouthwash, fluoride, and antacids/proton-pump inhibitors. The conversation ranges across acid reflux, the prevalence of PPI use, fluoride in water, pesticides, the carnivore diet, Viagra’s relationship to nitric oxide, and Bryan’s own nitric oxide-boosting lozenge products — which Lugavere lets him describe at length.
Key points
- Bryan argues nitric oxide is one of the most important and overlooked molecules in health, controlling blood flow, mitochondria, immunity, and sexual function.
- He claims everyday products — antiseptic mouthwash, fluoride, antacids — silently suppress the body’s nitric oxide production, starting with the oral microbiome. He cites his own 2015-published finding that mouthwash use is “causal for hypertension,” paired with his claim that two out of three Americans use mouthwash and two out of three have unsafely elevated blood pressure.
- On acid reflux drugs, he cites a recent study (as of the recording) finding that four years on proton pump inhibitors was associated with a 40% increase in dementia — and argues the drugs “should have a black box warning,” noting they were never FDA-approved for long-term use.
- He recounts that Viagra was originally developed for pulmonary hypertension and heart disease before its erectile effects redirected it — an illustration, in his telling, of how central nitric oxide signaling is to vascular function.
- He presents nitrate-rich vegetables, nasal breathing, sunlight, movement, and adequate stomach acid as levers for restoring nitric oxide levels.
- The episode also touches Bryan’s views on semaglutides, pesticides, and the carnivore diet, and includes a segment on his supplement routine and favorite foods.
- Lugavere gives Bryan extended room to discuss his commercial nitric oxide lozenge products — viewers should know the guest has a financial stake in the solutions he recommends.
- As with all such interviews, Bryan’s claims are his own; the “holy grail” framing is the video’s marketing, not a scientific consensus.