“I did a lot of sleep studies in teenagers and kids, the great majority of them relatively healthy people,” Gominak says. “They didn’t have terrible sleep apnea, but they all had much less deep sleep than normal, and it’s deep sleep that allows us to heal and feel rested.

I met Gominak at the American College for the Advancement in Medicine’s annual meeting in 2019 in Nashville. Her lecture was about ways to improve your sleep. I thought I was aware of most of them, but the connection between vitamin D and sleep surprised me.



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