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Here is a summary of the most solidly established effects: Improved skin firmness: Several controlled clinical studies have demonstrated a measurable increase in skin firmness after 8 to 12 weeks of topical application of creams containing GHK-Cu
Studies examining global DNA methylation in GHK-Cu-treated cells have identified altered methylation status at specific CpG sites within promoter regions of genes involved in matrix metabolism and inflammatory responses
Other groups who may benefit include: Patients following gastric surgery (gastrectomy, bariatric procedures) where intrinsic factor production or absorption sites are compromised Individuals with malabsorption disorders such as Crohn's disease, coeliac disease, or chronic pancreatitis Strict vegans and vegetarians with dietary insufficiency, though oral supplementation is usually tried first Elderly patients with atrophic gastritis or reduced gastric acid production Patients on long-term metformin or proton pump inhibitors, which can impair B12 absorption [6] [8] Individuals with nitrous oxide exposure (recreational or medical), which can cause functional B12 deficiency Diagnosis typically involves serum B12 measurement, with levels below approximately 148 pmol/L (though thresholds vary between laboratories) generally indicating deficiency
Important: This table represents general state Medicaid program policies
