ScienceInsights

Six evidence-based ways to raise your HDL cholesterol naturally, from exercise and diet changes to quitting smoking and managing weight.

Violent dreams can stem from stress, medications, alcohol, or sleep disorders. Here's what's likely causing yours and when it's worth talking to a doctor.

Learn how tampons work, how to choose the right absorbency, how long to wear one safely, and what to know about TSS risk.

Find out when hCG levels are high enough for a home pregnancy test to detect, and why testing too early can give misleading results.

Bow legs are normal in babies, but sometimes they persist. Learn what causes bowing that doesn't self-correct and when it's worth talking to a doctor.

Avocados do contain protein, but it's not their strong suit. Here's what they actually offer nutritionally and how they fit into a high-protein diet.

Learn what your blood pressure numbers actually mean, what counts as healthy or high, and how everyday habits like salt intake affect your reading.

Green poop is usually harmless and linked to diet or fast digestion, but here's when it might signal something worth checking out.

Learn how to balance easy Zone 2 runs with higher-intensity efforts, and how to find your personal heart rate zones for smarter training.

Collagen peptides come from animal hides, bones, and fish scales. Learn what each source contains and how your body actually absorbs them.