Xylitol for Oral and Nasal Microbiome Support + Allergy Relief, Part 2

Vitamin K2 (MK-7) and Coronary Artery Calcification: Insights from a 2-Year Trial: Nutritionist Leyla Muedin discusses a two-year randomized clinical trial in JAMA Cardiology from Maastricht University Medical Center reporting that daily vitamin K2 (menaquinone-7, MK-7) at 360 mcg slowed progression of coronary artery calcification (CAC) in 180 patients with confirmed atherosclerotic cardiovascular disease and baseline CAC 50–400 Agatston units. Compared with placebo, consistent MK-7 use was associated with 29% lower CAC progression and 42% less arterial calcium mass progression, though CAC still increased in both groups; stenosis increases were numerically lower with MK-7 but not statistically significant. Leyla notes many participants were on statins and were smokers, highlighting that statins can raise CAC by stabilizing soft plaque via calcification. The trial suggests MK-7 may slow calcification in newer plaques, may improve arterial elasticity via matrix GLA protein activation, is inexpensive and safe, but clinical event reduction remains unproven; Leyla suggests considering MK-7 (possibly 360 mcg) with vitamin D, magnesium, and dietary measures.

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Nathan Jones, founder and CEO of Xlear, Inc., reveals xylitol’s role in supporting oral and nasal “gateway” microbiomes by selectively starving acid-producing Strep mutans rather than indiscriminately killing bacteria, and warns that harsh mouthwashes can disrupt beneficial oral bacteria linked to nitric oxide production and possibly blood pressure. Jones outlines Spry and Xlear products (gum, mints, toothpaste, mouthwash, dry-mouth “Rain,” and upcoming gummy candies, a new dental probiotic with added nutrients, and a direct-to-consumer oral bacteria test kit with pre/post tracking). He discusses diet, emphasizing sugar as a key driver of cavities and criticizing limited focus on sugar in a Surgeon General oral health report. In part two, Jones describes ongoing and planned legal actions against the FTC over shifting evidentiary standards and reputational damage, then reviews Xlear’s allergy and respiratory approach via nasal hygiene, product tiers (regular, Max with quercetin, Rescue botanicals, and a decongestant), and a forthcoming ectoine-based spray to support mucus barrier integrity.

Dr. Hoffman continues his conversation with Nathan Jones, founder and CEO of Xlear, Inc.

Nitric Oxide Explained: Vascular Health, Exercise Performance, and N1o1 with Dr. Nathan Bryan, international Leader in Molecular Medicine, the first to describe nitrite and nitrate as indispensable nutrients required for optimal cardiovascular health. He details NO as a ubiquitous messenger affecting blood flow, erectile function, cognition, exercise performance, endothelial dysfunction, and aging-related declines in NO production. Bryan explains why PDE5 inhibitors like Viagra prolong cyclic GMP signaling but don’t fix NO deficiency, and why beet products often fail due to variable nitrate content and inadequate dosing. He outlines his NO lozenge approach that generates NO gas from sodium nitrite and magnesium ascorbate, plus a fermented beet powder drink (NOBeets), and emphasizes the role of oral bacteria (and harms of antiseptic mouthwash/fluoride) in nitrate conversion. They review published endpoints, including flow-mediated dilation, blood pressure effects, inflammation markers, triglycerides, stem cells, plaque regression, applications to Alzheimer’s, glaucoma/microvascular disease, safety/dosing considerations, risks of arginine supplementation, and a dual-chamber topical NO serum developed from wound-healing experience.

Dr. Hoffman continues his conversation with Dr. Nathan Bryan, international Leader in Molecular Medicine, the first to describe nitrite and nitrate as indispensable nutrients required for optimal cardiovascular health. 

Should you stop taking glucosamine based on a new study linking it to Alzheimer’s? What’s behind the spate of “Tai Chi Walking” social media posts? Undereye “festoons”—what to do about them? Are antibiotics the only treatment for SIBO? Vaping after smoking hikes risk for lung cancer.

Why aren’t there more medical insurance plans that cover alternative medicine? Solutions for Long Covid; MK7 vitamin K slows arterial calcification; Keto diet shows promise for treatment of anorexia; It’s not so much salt restriction—it’s the dietary sodium/potassium ratio in hypertension; Study finds multivitamins don’t keep you from getting Covid—but when you get it, it’s milder; Incidence of social anxiety disorder is soaring among young people.

Sleep, Glymphatic Detox, and the Hidden Heart Risks of Sleep Apnea: Nutritionist Leyla Muedin explains how sleep supports brain “housekeeping” via the glymphatic system, a glial-lymphatic waste-clearance network most active during sleep that moves cerebrospinal fluid through brain spaces to remove metabolites and toxic proteins such as amyloid beta, with sleep deprivation linked to amyloid accumulation. She notes other clearance pathways, including meningeal lymphatic vessels, whose impaired function is associated with neurodegenerative disease and brain injury. Reviews of human studies suggest sleep influences glymphatic outcomes, though results are inconsistent and methods vary. She emphasizes that poor sleep is associated with dementia risk, depressive symptoms, cardiovascular events, mortality, and impaired glucose metabolism, and highlights lifestyle strategies that may improve sleep. She warns that untreated obstructive sleep apnea accelerates cardiovascular aging via intermittent hypoxia and inflammation, raising blood pressure and cardiovascular event risk, while treatment (e.g., CPAP) may halt or reverse damage.