Tea Moth

Research on Vitamin C and Zinc in the Prevention of Colds

Zinc and cold prevention (what peer-reviewed evidence shows) Bottom line: Zinc is often discussed for colds, but the strongest recent synthesis suggests limited evidence for prevention; any potential benefit appears more consistent for treatment/shortening duration than for preventing infection. Vitamin C and cold prevention (lack of evidence for preventing colds) Bottom line: For most people,…

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The Clean 15

What Is the Clean 15? The “Clean 15” is a list of fruits and vegetables that typically contain the lowest levels of pesticide residue. These foods tend to have natural protective layers—such as thick skins or peels—or are grown in ways that result in less pesticide use overall. For people trying to balance health, budget,…

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Dirty Dozen

The “Dirty Dozen” refers to a group of fruits and vegetables that tend to carry higher levels of pesticide residue compared to others. This doesn’t mean these foods are unsafe or should be avoided altogether — many of them are nutritious staples. Rather, the list exists as a practical guide to help people make more…

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