Methods: This 16-week home-based trial will compare two groups: (1) low dose hydrogen water (2-3 glasses/day) for all 16 weeks; and (2) low dose followed by high dose hydrogen water (up to 5 glasses/day). Condition (2) involves an initial 8 weeks of low dose H2 followed by 8 weeks of high dose H2 in order to test the premise that the higher dosage will be more effective with fewer adverse effects if preceded by several weeks of low dose H2. Outcomes measures will include online assessments of fatigue, physical function and stress. A salivary biomarker for oxidative stress, Uric Acid, will also be assessed.