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29 stories for“air pollution”

Updated traveler attention around Ebola-affected areas underscores a basic rule: monitor official advice, know the symptoms and seek help without stigmatizing whole countries.

Jul 24, 2026

Health

Vitamin D Supplements: A Reality Check on Who Actually Benefits

Large trials with more than 30,000 participants found vitamin D pills do little for people who are not deficient, reshaping decades of assumptions.

Jan 20, 2026

Results

Ebola Travel Guidance Returns to the Departure Checklist

Vitamin D Supplements: A Reality Check on Who Actually Benefits