Latest articles by Rachael Rettner
At least 20 million years of life have been lost to COVID-19, study suggests
On average, each COVID-19 death resulted in 16 years of life lost.
Severe COVID-19 may damage the eyes, small study hints
The researchers saw "nodules" at the back of patients' eyes, which can be signs of inflammation or direct damage to the eye.
Giant hair ball tears through teen's stomach, requiring surgery
The hair ball was more than a foot long and completely filled her stomach.
CDC issues new guidelines for safely reopening schools
The recommendations provide a "long-needed road map" for reopening schools, officials said.
Diabetes drug led to dramatic weight loss in large trial
Participants lost 15% of their body weight.
California coronavirus variant is spreading rapidly. Should we worry?
Known as CAL.20C, the variant now accounts for nearly half of COVID-19 cases in Southern California.
CDC says double-masking improves protection from COVID-19
The study tested several methods for improving mask fit.
COVID-19 may lower sperm counts, small study finds
In a study of 43 men who had recovered from COVID-19, nearly 20% had azoospermia, or the total absence of sperm in semen.
The sneaky way the coronavirus mutates to escape the immune system
The mutations 'disguise' the virus from antibodies.
Horse tranquilizer emerges as new and deadly street drug in US
Called xylazine, the drug is a sedative used in veterinary medicine, and is not approved for use in humans.
UK coronavirus variant develops vaccine-evading mutation
This mutation has also been seen in a novel coronavirus variant in South Africa.
South African coronavirus variant: All your questions answered
Experts are particularly alarmed by this variant because of its potential to "escape" protection from current vaccines.
Ultrasound treatment 'jump-started' the brains of 2 people in coma-like state
The two patients who received the treatment showed significant progress over just days.
A woman seemed recovered from COVID-19. Then both her lungs collapsed.
The case is unusual because the woman had not been previously hospitalized with COVID-19 or put on a ventilator.
Why cats and dogs may need their own COVID-19 vaccines
Animal "reservoirs" may pose a risk to humans down the road.
UK coronavirus variant may be more deadly, early evidence suggests
COVID-19 vaccines are still expected to work against the new variant.
Toddler swallowed half a dozen tiny magnets. Some got stuck in his throat.
Magnetic bead toys are particularly dangerous for young children, who may accidentally swallow them.
Talking is worse than coughing for spreading COVID-19 indoors
The study also found that the virus can spread more than 6 feet (2 meters) in just seconds.
US life expectancy drops dramatically due to COVID-19
Black and Latino populations are disproportionately affected.
UK coronavirus variant could become dominant US strain by March, CDC says
Strict measures will be needed to prevent it from taking over.
New 'Columbus strain' of coronavirus evolved in the US
This strain quickly became the dominant coronavirus variant in Columbus, Ohio.
Marijuana use may reduce chances of getting pregnant
Women who use marijuana while they are trying to conceive may be less likely to get pregnant.
