After a bout of COVID-19, people had, on average, less gray matter in parts of the brain that help handle the sense of smell. That’s an interesting finding. But it's also not surprising.
“The brain is dynamic,” says neuroscientist Emily Jacobs of the University of California, Santa Barbara. “Less doesn’t mean worse, necessarily, and more doesn’t mean better.”
Pregnancy, and its ensuing hormone shifts, can also change the brain. In 2016, I covered a study that described Pregnancy comes with reductions in certain parts of a mother’s brain , a study from 2016 suggests. Researchers suspect that these brain regions have a role in connecting with the new baby.Jacobs also works on menopause, another big hormonal shift that affects the brain. And she has preliminary evidence that men’s brains change day-to-day, too. Like me, Jacobs also grapples with language when describing some of these changes. Words matter, quite a bit, she says.
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