Summary

Linus Pauling's central thesis is that the common cold can be prevented or its duration and severity significantly reduced by consuming large doses of vitamin C (ascorbic acid) daily, and even larger doses at the onset of symptoms. He posits that vitamin C plays a crucial role in immune function and that typical dietary intake is insufficient to combat viral infections effectively.

The book details the scientific rationale behind this claim, citing studies and proposing biological mechanisms for vitamin C's action. Pauling argues that vitamin C enhances the body's natural defenses, acting as an antioxidant and supporting the production of white blood cells. Readers are presented with the argument that daily supplementation with vitamin C is a practical, safe, and effective strategy for personal health management against colds.

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Key concepts

Ascorbic Acid — The chemical name for vitamin C, which Pauling argues is essential for immune system function.
Immune System Enhancement — The proposed mechanism by which vitamin C strengthens the body's defenses against viral pathogens.
Megadosing — The practice of taking significantly higher than the Recommended Daily Allowance (RDA) of vitamin C to combat illness.
Antioxidant Properties — Vitamin C's ability to neutralize harmful free radicals, which Pauling links to its health benefits.