Stories by Tanya Lewis

The deadly virus was practically eliminated in the U.S., but now it’s infecting more people.

A person tested positive for avian influenza after being exposed to cows thought to be infected with the virus. It's the second time a human has been infected with H5N1 in the U.S.

A quick nap can boost your memory, your mood and even your creativity

A heart valve transplant could save the life of a baby—or two

Myalgic Encephalomyelitis/Chronic Fatigue Syndrome, long dismissed by doctors, causes immune system dysfunction and other problems. But treatments are lacking.

Epigenetics research reveals how famines can cause health problems later in life—and how those changes might be passed down to future generations.

Nose-plus-throat swabbing for COVID could increase test accuracy—but could create problems, too

A noninvasive test for genetic material could predict embryo quality in IVF.

Researchers calculated the number of pregnancies resulting from rape in states where abortion was banned throughout pregnancy after the Supreme Court’s Dobbs decision

When symptoms start, COVID tests may say you’re not infected when you really are.

You have a “better chance of becoming Spider-Man” than being harmed by DNA from COVID vaccines

The holidays are a time for indulgence, but there are ways to drink alcohol without suffering the painful effects.

A deep-learning algorithm helped identify new compounds that are effective against antibiotic-resistant infections in mice, opening the door to AI-guided drug discovery

From new uses for weight-loss drugs to the first CRISPR gene editing therapy, these were some of the most impactful health stories of the year

Problems with the heart, kidneys and metabolic health are all connected

During the COVID pandemic, the U.S. initially saw a drop in births followed by a bump

The Israel-Hamas war has disrupted hospitals’ access to electricity, fuel and medicine. A physician from Doctors Without Borders/Médecins Sans Frontières explains why health care is so vulnerable during war

Fewer kids got their routine childhood vaccines since before the pandemic. Are lack of access and a loss of trust in science to blame?

Daytime naps of about 30 minutes really improve your thinking and may spark creativity.

Surgeons transplanted part of a face and an entire eyeball into a man with severe electrical burns. He is not yet able to see out of the eye, but preliminary evidence suggests it may retain some function

Advances are increasing the supply of organs. But this isn’t enough. Enter the genetically modified donor pig

More than half of our diet consists of foods that have been industrially processed in some way, and they may be harmful to our health

Surgeons transplanted a genetically modified pig heart into a human for the second time ever, and the recipient survived for six weeks

The dangerous virus is still here. Here’s how you can stay safe.