One such study showed that pre-treatment with vitamin C of 10,000mg daily reduced oxidation of the lipids in the blood. Excessive blood lipids can damage the endothelial tissue of the blood vessels of the heart, making them stiff and less able to dilate when the body needs an increase of blood flow.
Another study at UCLA, reviewed 19,000 individuals, who's blood plasma showed higher levels of vitamin C, had an increased life span of 6 years.
Vitamin C in conjunction with vitamin E, has been shown to take on h. pylori bacteria and reduce its effects by 90%. H. pylori is an opportunistic bacteria and can lead to stomach cancer, if given a chance.