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A clinical study treating crow's feet with GHK-Cu formulations showed substantial wrinkle reduction after 12 weeks, with skin biopsies confirming increased collagen in the upper dermis
An older study looked at the effects of hydrocortisone (a type of corticosteroid) on brain function and sleep
Urine C-peptide creatinine ratio can be used to assess insulin resistance and insulin production in people without diabetes: an observational study
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