The results of a pilot human clinical trial by researchers at Baylor College of Medicine suggest that taking a supplement known as GlyNAC could improve many age-associated deficiencies in older people, to promote healthy aging. The small-scale study showed improvements in many characteristic defects of aging, including glutathione deficiency, oxidative stress, mitochondrial dysfunction, inflammation, insulin resistance, endothelial dysfunction, body fat, muscle strength, genomic toxicity, gait speed, exercise capacity and cognitive function.