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Razib Khan

Gene Expression

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Fluoride is added to drinking water in some areas in the U.S., and is a successful approach for curbing cavities in children and adults. (Credit: Nikvart/Shutterstock)

A child holding a cup of water.

Learn what the science says about fluoride, a mineral that’s added to water to fend off tooth decay.

Small Amounts of Fluoride Support Healthy Teeth — Here’s How

(Credit: Nok Lek Travel Lifestyle/Shutterstock)

Healthy food choices while eating

Discover the foods and supplements that can help keep your heart healthy. 

Food and Supplements That Keep You and Your Heart Young

Gut and brain connection illustration

Learn how tweaks to existing depression and anxiety medicines may make them more effective for depression and anxiety — and could also help control GI issues like irritable bowel disorder.

Medicating the Gut and Not the Brain Could Help Depression and Anxiety

Periodic Mug

Foucault's Pendulum

Discover STEM Kits

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Elements Flashcards

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