Evidence supporting the use of: Vitamin C (ascorbic acid)
For the health condition: Bruises (prevention)

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Synopsis

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

Vitamin C (ascorbic acid) has some scientific justification for its use in the prevention and management of bruising, but the evidence is limited and not robust. Vitamin C is crucial for collagen synthesis, which is essential for the integrity of blood vessels and connective tissues. Deficiency in vitamin C (as seen in scurvy) leads to increased bruising due to weakened vascular walls. Several small studies and case reports have documented that people with frequent or unexplained bruising often have low vitamin C levels, and supplementation can help reduce bruising in these cases (PubMed). However, for people with normal vitamin C status, there is limited high-quality evidence that additional supplementation further reduces the risk of bruising. Some studies have suggested a mild benefit in individuals with marginal vitamin C status or those experiencing easy bruising, especially in older adults, but these findings are not consistent or universally accepted. Most clinical guidelines do not recommend routine vitamin C supplementation for bruise prevention in the general population. In summary, while there is a clear mechanism and some clinical evidence supporting vitamin C’s role in maintaining capillary health and preventing bruising in deficiency states, evidence for its use in prevention among the well-nourished population is weak.

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