ScienceInsights

Cannabis doesn't affect pregnancy test results. Learn what actually causes false positives or negatives, and when to see a doctor about an unclear result.

Stroke survivors can often donate plasma, but timing, medications, and stroke type all affect eligibility. Here's what to check before you go.

OTC drugs are more complex than they seem. Learn how they work, how to use them safely, and what to watch out for before your next pharmacy run.

Raynaud's disease and syndrome share a name but differ in cause, severity, and treatment. Here's what sets them apart.

Stopping an insulin drip in DKA safely requires more than a normal blood sugar. Learn the key clinical markers that signal true resolution.

Wigs have a surprisingly long history, from ancient Egyptian royalty to modern courtrooms. Here's how this hair tradition spread across cultures.

Diphenhydramine may contribute to weight gain through appetite changes, but the risk depends largely on how often you use it and whether effects reverse after stopping.

Wine can tenderize meat, but the science shows it depends on how you use it. Here's what actually works.

Heme and non-heme iron behave differently in your body. Learn which forms absorb best and how supplements compare to food sources.

Rowing works nearly every major muscle group. Learn which muscles drive each phase of the stroke and how to row more effectively.