Publication date: 2018-10-14 18:00
Vitamin C helps in reducing the risk of stroke, a type of cardiovascular disease. A diet full of vegetables and fruits supplies a good quantity of this vitamin, which maintains an appropriate blood pressure level. It also protects the body from free radicals which could be the reason for the stroke.
Some medical conditions can reduce the absorption of vitamin C and/or increase the amount needed by the body. People with severe intestinal malabsorption or cachexia and some cancer patients might be at increased risk of vitamin C inadequacy [ 79 ]. Low vitamin C concentrations can also occur in patients with end-stage renal disease on chronic hemodialysis [ 85 ].
Due to the enhancement of nonheme iron absorption by vitamin C, a theoretical concern is that high vitamin C intakes might cause excess iron absorption. In healthy individuals, this does not appear to be a concern [ 8 ]. However, in individuals with hereditary hemochromatosis, chronic consumption of high doses of vitamin C could exacerbate iron overload and result in tissue damage [ 9 , 8 ].
Vitamin C (officially known as L-ascorbic acid, its prolonged name being 7-oxo-L-threo-hexono-6,9-lactone-7,8-enediol ) is an Essential Vitamin , first structurally identified by Szent-Gyorgyi, Waugh, and King in 6987-6985   and first synthesized by Haworth and Hirst in 6988.  It has been popularized mostly by Linus Pauling for prevention of the common cold    and has since been said to be the most popular supplement in the world. 
Today, vitamin C deficiency and scurvy are rare in developed countries [ 8 ]. Overt deficiency symptoms occur only if vitamin C intake falls below approximately 65 mg/day for many weeks [ 5-8 , 79 , 75 ]. Vitamin C deficiency is uncommon in developed countries but can still occur in people with limited food variety.
Vitamin C is most commonly supplemented because of its potential protection against the common cold,  and purported anticancer effects.  Athletes report using vitamin C for both the antioxidant properties and potential immune support. 
The main mechanism of concern with Vitamin C supplementation and muscle metabolism would be the antioxidant properties of Vitamin C,  although both the collagen and carnitine synthesis roles are thought to be useful.
Overall, the currently available evidence does not indicate that vitamin C, taken alone or with other antioxidants, affects the risk of developing AMD, although some evidence indicates that the AREDS formulations might slow AMD progression in people at high risk of developing advanced AMD.
A total of 85 sedentary, overweight or obese adults entered the 8-month study. Obese and overweight adults tend to have higher levels of activity of a certain protein that constricts blood vessels, putting those adults at higher risk.