ScienceInsights

Still sick after a month? Learn what conditions commonly linger this long and which symptoms mean it's time to call your doctor.

Fingerprints are uniquely yours, and that makes them useful far beyond crime scenes—from unlocking your phone to identifying disaster victims.

HRT can reduce fertility, but there's no guaranteed sterility date. Learn how hormones affect reproduction and what to know about preserving fertility.

Squat depth affects muscle activation, joint stress, and results. Here's how to find the right depth for your body and your goals.

Most 16-year-old girls need 1,800–2,400 calories daily, depending on activity level. Learn what that looks like in practice and how to tell if your teen is eating enough.

At 4 weeks, an embryo is smaller than a poppy seed, but key structures are already beginning to form. Here's what's happening inside.

Prebiotics can shift gut bacteria within days, but meaningful digestive, metabolic, and mood benefits typically take 6 to 16 weeks of consistent use.

Anaerobic exercise fuels short, intense efforts without oxygen. Learn how it works, its health benefits, and how to add it to your routine.

Blue lotus produces a mild, relaxing euphoria for most people. Here's what to expect from its effects, how you take it, and what the risks are.

How you position your body affects blood flow, breathing, digestion, and more. Learn how proper positioning supports everyday health.