Vitamin C

Vitamin C is a powerful antioxidant with numerous additional functions. Among others, it contributes to collagen production, the regeneration of Vitamin E, the normal functioning of the immune system and the absorption of iron.

Quick facts

  • Reduces the severity of cold symptoms by 13%

WHAT IS VITAMIN C USED FOR?

Vitamin C is one of the most potent antioxidants in the human body. It neutralizes free radicals by donating electrons, protecting cells and tissues from oxidative damage that can lead to premature aging and various chronic diseases.

  • Aids in Collagen Synthesis

Vitamin C is essential for the synthesis of collagen, a crucial structural protein for skin, bones, tendons, and blood vessels. It acts as a cofactor for the enzymes prolyl and hydroxylyl hydroxylases, which are responsible for stabilizing and cross-linking collagen fibers.

  • Promotes Wound Healing

It improves skin elasticity and firmness, contributing to a more youthful appearance. It strengthens blood vessels and reduces capillary fragility.

  • Strengthens the Immune System

It helps produce key proteins against viral infections. It protects lymphocytes from free radicals. It participates in the modulation of the immune system, meaning it prevents excessive immune responses. This allows our immune system to act only as much as it should without overdoing it.

DID YOU KNOW...

Unlike many animals, humans cannot synthesize vitamin C on their own. This is due to a genetic mutation that deactivated the gene necessary to produce this vitamin, forcing us to obtain it exclusively from our diet.

Vitamin C is not stored in large quantities in the body, as it is water-soluble. Any excess is eliminated through urine, so it is important to consume it regularly to maintain adequate levels.

Although oranges are famous for their vitamin C content, some foods contain much more, such as red bell peppers (almost triple the vitamin C of an orange) and kiwi.

Clinical Studies

Vitamin C and strengthening the immune system

Vitamin C has been shown, compared to placebo, to reduce the severity of common cold symptoms by 13%, the number of days confined to home or absent from school by 15%, and the number of days with severe common cold symptoms by 66%.

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Hemilä H, Chalker E. Vitamin C reduces the severity of common colds: a meta-analysis. BMC Public Health. 2023 Dec 11;23(1):2468. doi:10.1186/s12889-023-17229-8. PMID: 38082300; PMCID: PMC10712193.

Vitamin C and Diabetes

In the following randomized trial, the effects of supplementation with 1000 mg of ascorbic acid (Vitamin C) for four months were investigated in individuals with type 2 diabetes. The results showed a significant improvement in insulin sensitivity and a reduction in skeletal muscle oxidative stress during states of hyperinsulinemia.

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Mason SA, et al. Ascorbic acid supplementation improves skeletal muscle oxidative stress and insulin sensitivity in people with type 2 diabetes: Findings of a randomized controlled study. Free Radic Biol Med. 2016.

Vitamin C in children

A study showed that vitamin C supplementation significantly improves hemoglobin and serum ferritin levels in children with iron deficiency anemia.

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Mao X, Yao G. Effect of vitamin C supplementations on iron deficiency anemia in Chinese children. Biomed Environ Sci. 1992.