ScienceInsights

Some blood tests can detect cancer signals, but they vary widely in accuracy. Learn which tests exist, how they work, and what their real limitations are.

Throat mucus got you down? Learn what causes it and which home remedies actually help, from saline rinses to staying hydrated.

Soluble fiber supports heart health, blood sugar, and gut bacteria, but eating too much too fast can cause issues. Here's what you need to know.

Morning sickness affects most pregnancies, but why does it happen and when is it serious? Learn what drives nausea, who's most at risk, and how diet can help.

Find out how much theobromine different types of chocolate contain, how it compares to caffeine, and why it's harmful to dogs but generally safe for humans.

Learn what it takes to become a hospice nurse, from education and licensing to daily duties, pay, and staying well in end-of-life care.

At 12 weeks pregnant, your baby is nearly fully formed and your body is shifting too. Here's what's happening and what to expect this week.

Learn what protein, carbs, and fat actually do in your body, how much you need, and why the quality of your macros matters as much as the quantity.

Early-onset dementia diagnosis involves several steps, from cognitive tests and brain imaging to biomarkers and genetic screening. Here's what the process looks like.

Diagnosing Hashimoto's typically involves a few blood tests, antibody screening, and sometimes an ultrasound. Here's what to expect from the process.