Five things vitamin C does in the body

Vitamin C is an antioxidant.
This means that it protects the body against the noxious effects of stress.

Vitamin C helps out your immune system.
It’s a nutrient that protects your immune cells while they fight off infection, making vitamin C pretty useful if you’re battling a cold or the flu.

Vitamin C helps your body make collagen.
Collagen is the stuff of skin, joints, and connective tissue. And while collagen is wonderful to take as a supplement, you need a little vitamin C to make your own.

Vitamin C controls the production of cortisol.
Cortisol is a stress hormone that’s stored in the adrenals. Vitamin C can minimize the release of cortisol which partially explains why high doses of vitamin C lowers blood pressure.

Vitamin C promotes the absorption of iron.
Specifically, non-heme iron or the kind of iron you find mostly in plants.