However, these results were not reproducible in humans [370], and even if they were, it would not explain why DBS works despite patient resistance to dopaminergic drugs
As we age, our levels of stomach acid start to decline and these reduced levels can make it harder for B12 to be absorbed from food
When comparing GHK-Cu vs AHK-Cu for hair growth appearance, GHK-Cu has the larger body of clinical research supporting it, while AHK-Cu offers a hair-focused alternative with emerging research
Safety and Research Limitations Importantly, No adequate clinical evidence defines safe human exposure, maximum tolerated dose, reproductive toxicity, carcinogenicity, genotoxicity, cardiovascular risk, liver safety, kidney safety, endocrine effects, or drug interactions