Topic
What to Know About Blue Light and Eye Strain
Screen soreness is real, retinal damage from devices is not. What the Academy and two peer-reviewed reviews found, plus the habits that ease the ache.
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Supplement
Topic
What to Know About Adaptogens: Evidence Versus Marketing
Adaptogen labels promise calm and focus. A 2012 trial backs one herb for stress scores, while federal reviewers and safety notes tell a narrower story.
Topic
What to Know About Vitamin K: Food Sources and Functions
A guide to vitamin K foods and functions: the K1 greens, the K2 fermented picks, NIH intake benchmarks, bone evidence, and the warfarin rule.