Vitamin C is a potent antioxidant which protects cells and biological molecules from damage and inflammation, which causes many diseases, including cardiovascular disease. Vitamin C also helps build connective tissue which supports and connects different types of tissues and organs in the body. The human body is not able to produce vitamin C, which means that we must get the vitamin from our diet.
New research has shown that high vitamin C concentrations in the blood from the intake of fruit and vegetables are associated with a reduced risk of cardiovascular disease, cancer and early death.
Reference:
Aune, D., et al. (2018). Dietary intake and blood concentrations of antioxidants and the risk of cardiovascular disease, total cancer, and all-cause mortality: a systematic review and dose-response meta-analysis of prospective studies. American Journal of Clinical Nutrition, vol. 108, 1069–1091.