Nathan Bryan

Nitric oxide is a real signaling molecule that regulates blood flow; its production tends to decline with age. The basic biochemistry and the role of dietary nitrates are mainstream. Several specific claims in this episode (about fluoride, mouthwash, and NO curing Alzheimer's) go further than evidence supports.

Nitric oxide is a gas your body makes to relax blood vessels and control blood flow. Low levels are linked to high blood pressure, poor circulation, and low energy. Diet, exercise, and nasal breathing may support it, while antiseptic mouthwash and some habits may lower it.