Health (Page 6)

The effect may be temporary, experts said. Men who have recovered from COVID-19 may be at risk of developing low sperm count, at least in the short-term, a small new study suggests. The study researchers, from the University of Florence in Italy, analyzed semen samples from 43 men ages 30Continue Reading

Amid a shortage of vaccine supplies and the threat of emerging coronavirus variants, such an approach might provide an answer for both. Researchers at the University of Oxford in the U.K. will begin to test what happens when they give people a mix of different COVID-19 vaccines. Amid a shortageContinue Reading

A worrisome new coronavirus variant first detected in South Africa, known as B.1.351, has already spread to more than 30 countries. A worrisome new coronavirus variant first detected in South Africa, known as B.1.351, has already spread to more than 30 countries. Experts are particularly alarmed by this variant becauseContinue Reading

Picturing how our species might appear in the far future often invites wild speculation over stand-out features such as height, brain size, and skin complexion. Yet subtle shifts in our anatomy today demonstrate how unpredictable evolution can be. Take something as mundane as an extra blood vessel in our arms,Continue Reading

A new CDC report finds that 25% of people don’t remember to wash their hands at important times, such as after blowing their nose. More Americans are washing their hands amid the COVID-19 pandemic, but 1 in 4 don’t lather up when they need to, such as after blowing theirContinue Reading

Another study shows that masks and other mitigation efforts not only work, but work well. Mask mandates, closures of certain businesses and other COVID-19 mitigation strategies implemented over the summer led to a 75% drop in new coronavirus cases in Arizona, according to a new report from the Centers forContinue Reading

Scientists have finally recreated the initial steps of HIV infection in a test tube, offering an incredibly zoomed-in view of the virus in action. The amazing images show a cone-shaped shell of geometric tiles, called the capsid, that sits at the virus’s center and contains its genetic material, known asContinue Reading

The new coronavirus can linger on human skin much longer than flu viruses can, according to a new study from researchers in Japan. SARS-CoV-2, the virus that causes COVID-19, remained viable on samples of human skin for about 9 hours, according to the study. In contrast, a strain of theContinue Reading

The 2020 Nobel Prize in chemistry went to two women who developed a gene-editing tool called CRISPR-Cas9, which snips DNA like a pair of molecular scissors. The technique “has not only revolutionized basic science, but also resulted in innovative crops and will lead to ground-breaking new medical treatments,” Claes Gustafsson,Continue Reading