Relationship: Heart and vitamin C

Evidence supporting the use of: Vitamin C
For the body system: Heart

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Vitamin C (ascorbic acid) has been investigated for its role in supporting cardiovascular health, though the strength of scientific evidence is moderate and somewhat mixed. Epidemiological studies have found that higher dietary intake of vitamin C is associated with a lower risk of cardiovascular disease (CVD). This is partly attributed to its antioxidant properties, which may help reduce oxidative stress—a factor implicated in atherosclerosis and heart disease. Vitamin C also plays a role in collagen synthesis, which is important for maintaining the structural integrity of blood vessels.

However, randomized controlled trials (RCTs) have not consistently demonstrated a significant benefit of vitamin C supplementation in reducing cardiovascular events or mortality. A 2013 Cochrane review concluded that antioxidant vitamin supplementation, including vitamin C, did not reduce the risk of heart disease or overall mortality in the general population. Some small trials suggest that vitamin C supplementation may lower blood pressure or improve endothelial function, but these effects are generally modest and their clinical significance is unclear.

In summary, while vitamin C is essential for overall health and there is some scientific rationale for its cardiovascular support, the evidence from large, high-quality trials does not strongly support its use as a supplement specifically for heart health beyond ensuring adequate dietary intake.

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Products containing vitamin C

Health Concerns

Brands

Evidence supporting the use of: Vitamin C
For the body system: Heart

Table of Contents

Synopsis

Other ingredients that support Heart

Other body systems supported by vitamin C

Products containing vitamin C

Health Concerns

Brands

Evidence supporting the use of: Vitamin CFor the body system: Heart

Table of Contents

Synopsis

Other ingredients that support Heart

Other body systems supported by vitamin C

Products containing vitamin C

Evidence supporting the use of: Vitamin C
For the body system: Heart