Debunked Myths

The belief that vitamin C is a cold-fighting superhero became deeply ingrained through Nobel laureate Linus Pauling's 1970 book. This idea suggests megadoses of orange juice or supplements can prevent infection or rapidly cure colds through immune-boosting magic. The myth gained scientific credibility through Pauling's reputation and decades of vitamin marketing.

Decades of rigorous research deliver a clear verdict: regular vitamin C supplementation doesn't reduce cold incidence in the general population. There's a modest benefit for reducing duration—about 8% in adults—translating to just one less day in a week-long cold. The exception is extreme athletes, who see about 50% risk reduction.

This myth persists because we desire simple, controllable solutions to unpredictable illnesses. Catching a cold feels random, while taking vitamins provides agency. The truth is more complicated: while vitamin C remains essential for immune function, most people get adequate amounts from diet, and excess amounts are simply excreted.