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What science exists for GHK-Cu is all rather positive (a 2018 analysis of the science concluded the peptides actions appear to be health positive, saying it boosts collagen, improves tissue repair and has powerful cell-protective actions, including multiple anti-cancer and anti-inflammatory actions)
Fiber is important, too
They should not be treated as interchangeable
RAI analogs (lispro, aspart, or glulisine) are preferred over regular human insulin because they have a more rapid onset and shorter duration of action, making them better suited for controlling PPG, and are associated with less hypoglycemia [18, 19]
Maddison KJ, Kosky C, Walsh JH
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