Biology Insights

A blood pressure of 120/81 sits just outside the normal range. Here's what that diastolic number means for your health and when to pay attention.

Itching, unusual discharge, and redness are common early signs of a yeast infection. Learn how to recognize symptoms early and tell them apart from other conditions.

Find out how much protein 12-year-old boys actually need each day, plus tips for active kids and signs that more isn't always better.

Pimples under the nose are common but easy to irritate. Learn safe ways to treat them and when to see a doctor.

Dry mouth is often caused by medications or health conditions. Learn what's behind it and how to manage it before it affects your teeth and throat.

Diarrhea in a 1-year-old is stressful. Learn what actually helps, what to avoid, and when it's time to call the doctor.

Learn how to calmly support someone through an anxiety attack, from helpful things to say to breathing and grounding techniques.

Learn how to treat throat anginas at home, when antibiotics are needed, and which warning signs mean it's time to see a doctor.

Learn the common signs of high testosterone in men and women, how it's tested, and what to do if your levels seem elevated.

After ovulation, an egg survives just 12–24 hours. Here's what that means for conception and why your fertile window is actually longer than you'd expect.

Whether to eat before the gym depends on your workout and body. Here's how to fuel smart without hurting your performance.

Most sinus infections clear up on their own, but when antibiotics are needed, amoxicillin is typically the first choice doctors reach for.

Timing matters less than you think. What you eat with your probiotics has a bigger impact on their effectiveness than what time you take them.

Most people have occasional heart palpitations without cause for concern. Learn what's considered normal and when it's worth talking to a doctor.

Your calorie needs depend on more than just your size. Learn how to estimate your daily energy needs and why those numbers are always a starting point.

Jealousy of others' success is normal, but it doesn't have to hold you back. Learn what it's really telling you and how to use it constructively.

Acne begins in the pilosebaceous unit, where oil glands, dead skin cells, hormones, and bacteria combine to clog pores and trigger inflammation.

From hormone tests to cycle patterns, here's what actually tells you about your fertility and when it's worth seeing a doctor.