Since GHK-Cu carries copper, people with liver issues or copper metabolism concerns should speak with a doctor before using it
It's worth being honest about the evidence here
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Research published in 2011 found that elderly subjects had markedly lower glutathione concentrations compared to younger adults, with 83% higher fractional synthesis rates in young people
Detoxification and Liver Health The liver relies on glutathione for detoxification, especially in metabolizing and removing alcohol, drugs, and environmental toxins
In addition, eotaxin, TNF-, and interleukins 4 and 5 levels have previously been found to be elevated in the broncho-alveolar lavage fluid (BALF) of obese mice, particularly in those with central obesity [33]