ScienceInsights

RER measures the ratio of CO2 you exhale to O2 you inhale, revealing which fuels your body is burning. Here's what those numbers mean for you.

Learn to recognize strep throat symptoms, how it differs from a viral sore throat, and what to expect from testing and recovery.

Learn which organs sit on your left side and what conditions like diverticulitis, kidney stones, or a spleen issue could be causing your pain.

Jell-O contains some gelatin protein, but not much — and what's there isn't complete. Here's what that means for your diet.

Vaginal irritation can stem from infections, hormonal shifts, or everyday products. Learn what's behind common symptoms and how to find relief.

Invisalign can treat crowding, spacing, overbites, crossbites, and more. Learn what it can and can't fix, and how it compares to traditional braces.

Brown mucus is often harmless, but it can sometimes signal an infection or lung condition. Learn what causes it and when to see a doctor.

UTI pain relief options explained, from phenazopyridine and ibuprofen to hydration tips and what to avoid while waiting for antibiotics to kick in.

Learn how to recognize anaphylaxis and respond effectively, including when and how to use epinephrine before emergency services arrive.