ScienceInsights

Dental onlays sit between fillings and crowns in terms of coverage. Learn what they're made of, how long they last, and when your dentist might suggest one.

Practical ways to help older adults eat more, from smaller meals and calorie-dense foods to social eating and zinc intake.

Alcohol use disorder is diagnosed using 11 specific criteria, and it exists on a spectrum. Learn what they are and why it can be hard to recognize in yourself.

Newborns can only stay awake for short stretches before overtiredness sets in. Learn typical wake windows by age and how to read your baby's tired cues.

The Hot Girl Walk combines light exercise with a confidence mindset—here's the science behind why this simple habit benefits both body and mood.

Thinking about quitting alcohol? Learn which treatments, therapies, and support options have solid evidence behind them—and why some approaches work better than others.

Some sugars are safer for diabetics than others. Learn which sweeteners won't spike blood glucose and how to use them in everyday eating.

Learn what your cholesterol ratio means, how it's calculated, and why doctors now use additional numbers to get a clearer picture of heart health.

COVID vaccines are available, updated regularly, and free in many cases. Here's what you need to know about how they work and how long protection lasts.

Anemia has many possible causes, from iron and vitamin deficiencies to kidney disease, blood loss, and bone marrow problems. Here's what you should know.