Enhanced-efficiency nitrogen fertilizers, the high-tech products marketed as a way to squeeze more grain out of every ...

Patients and doctors are eager for a noninvasive way to diagnose the disease, and several start-ups are offering new options.

Urease is one of the most consequential enzymes in the microbial world. By hydrolyzing urea into ammonia and carbon dioxide, ...

Soma Mandal, MD, is a board-certified internal medicine physician with a specialty in women’s health. How long you are contagious with COVID-19 depends on your symptoms. On average, most people stop ...

A new test using cells collected from urine and vaginal fluid could help rule out uterine and other cancers in most women who ...

The best at-home COVID-19 tests are FDA-authorized, easy to use, accurate, quick, and can also detect flu viruses. Lauren Paige Richeson is an Editor at Health, where she’s been writing, editing, and ...

Toxic positivity is the act of avoiding, suppressing, or rejecting negative emotions or experiences. This may take the form of denying your own emotions or having someone else deny your emotions—and ...

A chemical stress test uses medications to make your heart beat faster and widen your blood vessels, simulating how your heart responds to exercise when you can’t use a treadmill or bike. The test can ...

A 4-year-old boy presented with fatigue and frequent falls. After falling, he could not stand up using his legs and would instead push himself up with his hands. The aminotransferase levels were ...

Creating characters that encompass the rich diversity of humanity is particularly pertinent to screenwriting, where representation really does matter. However, gender inclusivity in media has long ...

Although foodborne illnesses stole the spotlight all summer, another highly contagious virus has been spreading in the United States: coronavirus. After a long lull, COVID-19 cases are on the rise ...

Dear Doctor Roach: I was recently admitted to the hospital with pneumonia in both lungs. Given the recent outbreak of Legionella where I live, I was concerned whether I might have had this instead.