Vitamin C has long been associated with immune health, particularly during cold and flu season. From citrus fruits to supplements, it is often one of the first nutrients people turn to when trying to prevent or manage illness. However, while vitamin C plays an important role in supporting the immune system, its effects are often misunderstood.

Understanding what vitamin C can and cannot do allows for more informed decisions and realistic expectations when it comes to maintaining health during seasonal illness.

What is vitamin c?

Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that the body cannot produce on its own. This means it must be obtained through diet or supplementation.

It plays several important roles in the body, including:

• Supporting immune system function
• Acting as an antioxidant
• Contributing to collagen formation
• Assisting in wound healing

Vitamin c and immune function

Vitamin C supports multiple components of the immune system. It contributes to the function of various immune cells, including white blood cells, which help identify and respond to pathogens.

It also plays a role in protecting these cells from oxidative stress caused by free radicals generated during infections.

According to research, vitamin C supports the body’s natural defence systems, particularly during periods of increased physical or environmental stress.

Can vitamin c prevent a cold?

One of the most common misconceptions is that vitamin C can prevent colds entirely.

Evidence suggests that for the general population, vitamin C supplementation does not significantly reduce the risk of developing a cold. However, regular intake may:

• Reduce the duration of symptoms
• Decrease the severity of symptoms

This means vitamin C is better understood as a supportive nutrient, rather than a preventative cure.

Additional health benefits

Beyond immune support, vitamin C contributes to several other important functions:

Antioxidant protection

Vitamin C helps neutralise free radicals, reducing oxidative stress that may contribute to ageing and chronic disease.

Skin and tissue health

It plays a role in collagen production, supporting skin integrity and wound healing.

Nutrient absorption

Vitamin C enhances the absorption of non-haem iron from plant-based foods.

Dietary sources of vitamin c

While oranges are often associated with vitamin C, many other foods contain equal or higher levels, including:

• Red bell peppers
• Strawberries
• Kiwis
• Broccoli
• Guavas

A varied diet helps ensure adequate intake alongside other beneficial nutrients.

When might supplementation be helpful?

Supplementation may be considered in cases where:

• Dietary intake is insufficient
• Immune demands are increased
• Lifestyle factors (stress, illness, poor diet) are present

Where Brunel Laboratoria fits in

Brunel Basics Vitamin C (1 000 mg) provides a convenient way to support daily intake, particularly during periods of increased immune demand.

Conclusion

Vitamin C plays a valuable role in supporting immune function, but it is not a cure for illness. When used consistently as part of a balanced lifestyle, it may help support the body’s natural defence mechanisms and improve recovery outcomes.

References

• Mayo Clinic (2023). Vitamin C. Available at: https://www.mayoclinic.org/drugs-supplements-vitamin-c/art-20363932
• Cochrane Library (2013). Vitamin C for preventing and treating the common cold. Available at: https://www.cochrane.org/evidence/CD000980_vitamin-c-preventing-and-treating-common-cold
• Cleveland Clinic (2023). Vitamin C benefits. Available at: https://health.clevelandclinic.org/vitamin-c

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