Biology Insights

Plan B can cause nausea and period changes, but research shows no long-term harm. Here's what to expect and when effectiveness may be reduced.

Learn which clear liquids are safe before a colonoscopy, what colors to avoid, and how to get through the bowel prep process comfortably.

Simple dietary swaps, cooking tricks, and practical tips to help manage high potassium levels at home, plus signs it's time to call a doctor.

Learn the early and serious signs of dehydration, from urine color to skin tests, plus what to watch for in kids and older adults.

Hiatal hernias are common and often manageable, but some cases need medical attention. Learn what symptoms to watch for and when treatment is necessary.

Bed bug bites are painless at first but can itch for days. Learn how they feel, when symptoms appear, and how to tell them apart from other insect bites.

Find out when pregnancy tests actually work, what early signs to look for, and how soon an ultrasound can confirm a pregnancy.

Dogs can get seriously ill from eating cannabis. Learn the signs of THC intoxication, when to call a vet, and how long recovery usually takes.

Avocado toast can support weight loss, but toppings and portions matter more than most people realize. Here's how to make it work for your goals.

Sex raises blood pressure briefly but may offer longer-term heart benefits. Learn how it affects hypertension, plus medication interactions to know about.

From CBT to sleep and diet, here's what the evidence says about helping anxious kids feel calmer without reaching for medication first.

Chigger bites itch for days, but the right treatments can bring real relief. Here's what actually helps and what to skip.

Practical ways to support a loved one with cognitive impairment, from clearer communication and home safety to caregiver wellbeing.

Bone bruises heal slowly, but early care, good nutrition, and quality sleep can make a real difference in your recovery time.

Sensitive teeth can often be managed at home. Learn what actually causes sensitivity and which treatments, habits, and products help reduce it.

A trace of protein in urine is often harmless, but sometimes it warrants a closer look. Here's what the result means and when to follow up.

A plain-language breakdown of what the Affordable Care Act actually does, from coverage protections to subsidies and Medicaid expansion.

Ozempic can stay unrefrigerated for up to 56 days, but temperature and storage conditions matter. Here's how to keep your pen safe and effective.

Woken up by a panic attack? Learn three practical steps to calm down fast, plus habits that can help reduce nighttime anxiety over time.