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M. Spencer Green/AP

Researchers have discovered a link between premature births and sleep disorders like insomnia and sleep apnea, according to Nature.

  • The study is part of a $100 million investigation of prematurity in California and East Africa called the UCSF Preterm Birth Initiative. Researchers looked at the "records of almost three million births that took place in California between 2007 and 2012" and found 2,300 records of women diagnosed with a sleep disorder like insomnia or sleep apnea. Among them, insomnia increased the risk of preterm birth by 30%; sleep apnea increased the risk by 40%. (Prematurity is defined as being born three weeks or more before full term.)
  • Sleep disorders aren't a direct cause of preterm births. Jennifer Felder, leader of the study and postdoctoral researcher in clinical psychology at UCSF, said that lack of sleep could cause inflammation, which could lead to prematurity.
  • Why it matters: Nature reports that 15 million babies are born prematurely across the globe each year, and 1.1 million will die from complications.

Go deeper

Updated 33 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Health: Trump received COVID vaccine at White House in January — CDC director warns "now is not the time" to lift COVID restrictions.
  2. Education: More schools are reopening in the U.S.
  3. Vaccine: J&J CEO "absolutely" confident in vaccine distribution goals Most states aren't prioritizing prisons for COVID vaccines — Vaccine hesitancy is shrinking.
  4. Economy: Apple says all U.S. stores open for the first time since start of pandemic — What's really going on with the labor market.
  5. Sports: Poll weighs impact of athlete vaccination.
  6. World: Latin America turns to China and Russia for COVID-19 vaccines.
Dave Lawler, author of World
51 mins ago - World

Latin America turns to China and Russia for COVID-19 vaccines

Several countries in the Americas have received their first vaccine shipments over the past few weeks — not from the regional superpower or from Western pharmaceutical giants, but from China, Russia, and in some cases India.

Why it matters: North and South America have been battered by the pandemic and recorded several of the world’s highest death tolls. Few countries other than the U.S. have the capacity to manufacture vaccines at scale, and most lack the resources to buy their way to the front of the line for imports. That’s led to a scramble for whatever supply is available.

More schools are reopening in the U.S.

Students settle into a classroom in New York City. Photo: Michael Loccisano/Getty Images

More than 72% of K-12 students are now attending schools that offer in-person or hybrid models of learning.

The big picture: The U.S. is seeing an almost-universal return of schools that were in-person as of November, as well as a gradual return in parts of the country that had been virtual for almost a year.

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