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Vitamin C: Myth vs. Reality

Research shows that regular vitamin C intake does not prevent colds, though it may slightly reduce severe symptoms if taken beforehand.

Jyotismita Choudhury | | 2 min read

Vitamin C: Myth vs. Reality
AI Generated Image | MinuteBrief Team

In This Story

Despite its reputation, decades of research show that high doses of vitamin C will not prevent most people from catching a cold.

The idea originated in 1970 with chemist Linus Pauling, who recommended 1,000–2,000 mg daily based on flawed, low-quality studies.

Key Takeaways

  1. No Prevention: Taking regular vitamin C does not lower the risk of catching a cold in the general population (though minor benefits appear in extreme athletes and military personnel).
  2. Slightly Shorter Severe Symptoms: Taking at least 1,000 mg daily before getting sick reduces the duration of severe symptoms by only 8% to 15%—saving just a few hours of discomfort.
  3. No Quick Fix: Taking vitamin C after you start feeling sick provides zero benefit.
  4. Side Effects of High Doses: Exceeding 1,000–2,000 mg daily can cause diarrhea, stomach cramps, kidney stones, and negative interactions with certain medications.

Most adults get all the vitamin C they need (45 mg daily) from half an orange or a serving of broccoli.


Source: Science Daily

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