Vitamin C Supplements: Limited Role in Immune System Support
Vitamin C supplements are often discussed as a means to support the immune system, but recent clinical research suggests their effects are limited. While vitamin C is essential for normal immune function, supplements do not reliably prevent common colds in the general population. They may slightly shorten the duration of colds, particularly in individuals under heavy physical stress or with inadequate dietary intake. High doses of vitamin C can cause side effects such as stomach upset and are not recommended for everyone, especially those with certain kidney conditions or iron overload disorders. 
