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It works by mimicking hormones that regulate how your body processes food and sugar

Injectable GHK-Cu, by contrast, has far less clinical validation for cosmetic purposes

9 Foods and Supplements That Increase GLP-1 Naturally Jocelyn McTavish Oct 1, 2025 8 min read Updated: Apr 21 Written by Nicole Rowe, MD | Reviewed by Katie E

doi: 10.1371/journal.pone.0208906 126 LeeuwendaalNKHayesJJStantonCOToolePWBeresfordTP

Further information You might be interested to check out the following webpages: What every vegan should know about vitamin B12 an Open Letter with detailed information on vitamin B12 endorsed by health professionals