A very specific kind of brain cell dies off in people with Parkinson’s

Deep in the human brain, a very specific kind of cell dies during Parkinson’s disease. For the first time, researchers have sorted large numbers of human brain cells in the…

Some hamsters are extremely susceptible to COVID-19

Golden Syrian hamsters are highly susceptible to the coronavirus that causes COVID-19, a new study shows. While the species is popular among pet owners, the results, posted April 20 at…

The body’s response to allergic asthma also helps protect against COVID-19

Scientists are discovering a surprising bright side for some people with asthma: They are less susceptible to COVID-19. The very same immune system proteins that trigger excess mucus production and…

How I decided on a second COVID-19 booster shot

Booster shots against COVID-19 are once again on my mind. The U.S. Food and Drug Administration says that older people and immunocompromised people are eligible for a second booster shot…

Joggers naturally pace themselves to conserve energy even on short runs

For many recreational runners, taking a jog is a fun way to stay fit and burn calories. But it turns out an individual has a tendency to settle into the…

50 years ago, scientists were seeking the cause of psoriasis

Cyclic AMP and psoriasis — Science News, April 29, 1972 [A team of dermatologists] discovered that cyclic AMP levels in psoriasis lesions are significantly lower than in healthy skin.… [The…

Antibiotics diminish babies’ immune response to key vaccines

Taking antibiotics in the first two years of life can prevent babies from developing a robust immune response to certain vaccines. The new finding provides another cautionary tale against overusing…

What experts told me to do after my positive COVID-19 at-home test

After two years of successfully evading getting COVID-19 — including a few brushes with close contacts, a couple of are-they-just-colds? scares and lots of negative tests — I recently tested…

Why taking medications during pregnancy is so confusing

Obstetrician Cynthia Gyamfi-Bannerman was treating patients in New York City when the COVID-19 pandemic swept in. Hospitals began filling up. Some of her pregnant patients were among the sick. It…

A new nuclear imaging prototype detects tumors’ faint glow

A type of light commonly observed in astrophysics experiments and nuclear reactors can help detect cancer. In a clinical trial, a prototype of an imaging machine that relies on this…