One Day MD | Evidence-Based Wellness

A comprehensive, peer-reviewed synthesis of preclinical and clinical evidence for H₂ therapy across 20 disease categories — 2026 Update Published: June 2026 Last Reviewed: June 2026   2026 Update References: 160+ citations Category: Integrative Medicine | Antioxidant Therapy Reading Time: ~18 min Peer-Reviewed Format Abstract Molecular hydrogen (H₂) has emerged over the past two decades as a uniquely versatile therapeutic agent, distinguished by its ability to selectively scavenge cytotoxic reactive oxygen species (ROS) while crossing all biological barriers, including the blood-brain barrier. Since the landmark 2007 Nature Medicine publication, more than 5,000 papers and over 100 registered clinical trials have examined H₂ across conditions spanning neurodegeneration, cancer, cardiovascular disease, metabolic syndrome, inflammatory disorders, and respiratory illness. This updated review synth...

Testosterone is one of the most important hormones in male health. It influences sexual function, muscle mass, bone health, red-blood-cell production, body composition and aspects of mood and energy. Testosterone levels also tend to decline as men age, creating growing interest in testosterone testing, testosterone replacement therapy (TRT), men's health optimization and longevity. Interest in testosterone treatment is also increasing again. New 2026 data from Epic Research show that testosterone prescribing rates in the United States have begun rising again after nearly a decade of decline. The trend is important because it suggests a renewed clinical and consumer focus on testosterone, men's health and hormonal aging—but a rise in prescribing does not itself prove that testosterone therapy is appropriate for every man. The central question remains: Does a man have clinically meaningful testosterone deficiency, what is causing it, and is testosterone replacement lik...

GLP-1 drugs can be highly effective for weight loss, but extreme appetite suppression, persistent nausea or vomiting, and very rapid weight loss can create a nutritional problem that is easy to overlook. One of the most serious possibilities is thiamine (vitamin B1) deficiency leading to Wernicke encephalopathy , a neurological emergency. Recent case reports, a 2025 pharmacovigilance analysis and a 2026 systematic review have raised a safety signal involving semaglutide, tirzepatide and other GLP-1-based therapies . The evidence remains limited and does not establish that GLP-1 drugs directly cause Wernicke encephalopathy in most users. Instead, the leading concern is an indirect pathway involving markedly reduced food intake, gastrointestinal intolerance, nutritional depletion and rapid weight loss . ( Gras et al., 2025 ; Goldman et al., 2026 ; Bidesie & Oudman, 2026 .) Key takeaway: The concern is not that everyone taking a GLP-1 medication ...