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Intrinsic factor is a glycoprotein produced by gastric parietal cells that is absolutely essential for vitamin B12 absorption in the small intestine

The Carnitine System

This is further supported by the finding that SOD activity is increased during active disease and returns to normal in remission (157).Additionally, the presence of oxidative damage and the inhibition of catalase, an antioxidant enzyme, in CD patients immune cells further underscores oxidative stresss role in the disease (158)

I dont think it will, since symptoms/responses are so similar between all types of skin

While there is an increased risk of complications due to elevated GH levels, this is extremely rare with proper dosing protocols