Some women have avoided getting a Covid-19 vaccine because they’ve heard misinformation that it might leave them infertile, or if they’re pregnant, harm the baby. But the CDC has now issued an urgent advisory for pregnant or recently pregnant women to get the vaccine. And research now shows not only do the vaccines have no effect on fertility, they also pass immunity to babies who were in the womb when mom was vaccinated. A study in the American Journal of Obstetrics and Gynecology finds that 100% of newborns, whose mothers received either the Pfizer or Moderna vaccines, had protective antibodies when they were born.
New teenage drivers may not like some of the rules restricting how many passengers they can carry at night, but a new study shows the rules are very effective at reducing risky driving, crashes, and deaths. The study from the National Bureau of Economic Research shows that banning first year drivers under 21, from carrying more than one passenger at night, cuts hospitalizations and fatalities by nearly 60%.
Walking ten thousand steps a day is good for your health, but how good depends on how fast you walk. In a study in the European Heart Journal, scientists have determined that vigorous walking, more than two steps per second, is at least three times better for you than a stroll, even if you do ten thousand slow steps a day.
And finally, if the pandemic’s got you down and kept you from exercising, you’re not alone. In fact, the two are connected. A new study in the journal Preventive Medicine Reports finds that the pandemic has Americans stuck in a vicious cycle. Scientists say poor mental health is keeping us from getting out and exercising, which might get us out of the dumps. Urban dwellers fair worse than rural residents who can walk, run, or bike in wide open spaces.
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