A boy or a girl? New research suggests that the air pregnant women breathe or the water they drink could play a role in their baby’s sex. The finding stems from tracking hundreds of factors — including pollution exposure — surrounding the birth of more than 6 million Americans and Swedes. “To my knowledge, this…  read on >  read on >

Women are two times more likely than men to die after receiving a combination of cancer immunotherapy drugs called checkpoint inhibitors, but it’s not clear if that difference is due to side effects or because the treatment isn’t working, researchers say. This new class of highly targeted drugs — which includes pembrolizumab (Keytruda), nivolumab (Opdivo)…  read on >  read on >

Five cases of the Omicron coronavirus variant have been detected in New York state, one in Minnesota and one in Hawaii, officials in those states announced Thursday. That brings the known total in the United States to nine, with California and Colorado previously announcing one case each. One of the New York cases is a…  read on >  read on >

Lab studies show that the mutations found in COVID-19’s Delta variant make the virus more resistant to existing vaccines, a potentially ominous development as the new Omicron variant starts to wend its way around the world. Full vaccination with the Pfizer or AstraZeneca vaccines still produces enough antibodies to neutralize Delta, British researchers found. But…  read on >  read on >

Most vaccinated American adults have every intention of getting booster shots, a new poll finds. Only about one in five say they won’t get it, according to a Kaiser Family Foundation (KFF) survey conducted with 1,820 U.S. adults between Nov. 8 and Nov. 22. About 23% of vaccinated adults have already received a booster shot…  read on >  read on >

COVID-19 lockdowns brought surprising news to scientists studying pollution: Cars spew much more ammonia into the air than previously thought. Ammonia is a common air pollutant that’s a major cause of lung and heart disease, especially in cities. “The tricky question has always been: How do we separate out ammonia concentrations owing to traffic from…  read on >  read on >

If you’re getting together with others outdoors, a windy day might be best, researchers say. The investigators found that when people socialize outside, the risk of coronavirus infection is as much as 45% greater when there’s hardly any breeze than when there are stronger winds. “The issue is really about an increased danger of infection…  read on >  read on >

Autism may be more prevalent among American children than believed, a new U.S. government study shows. One in 44 children at age 8 in the United States have been diagnosed with the developmental disorder, a jump from the previous estimate of 1 in 54 children, the U.S. Centers for Disease Control and Prevention report found.…  read on >  read on >