March 23, 2017 5:44 AM EDT

A roundup of new and noteworthy insights from the week’s most talked-about studies

1 SLEEPING WELL FEELS LIKE WINNING THE LOTTERY

A study in Sleep of more than 30,000 people found that those who improved their sleep quality had levels of mental-health improvement after four years similar to those of lottery winners of roughly $250,000 after two years.

2 FEWER BABIES ARE BEING BORN WITH HIV IN THE U.S.

A report in JAMA Pediatrics found that HIV transmission from mother to child has decreased in the U.S., from 216 babies born with HIV in 2002 to 69 babies in 2013. Researchers attribute the decrease in part to higher rates of HIV testing.

3 COMMON PAIN MEDS MAY INCREASE RISK OF HEART PROBLEMS

A study in the European Heart Journal–Cardiovascular Pharmacotherapy of nearly 30,000 people who had experienced cardiac arrest found that those who used nonsteroidal anti-inflammatory drugs such as ibuprofen and diclofenac in the 30 days before the cardiac arrest raised the risk of heart attack by 31%.

–J.Z.

This appears in the April 03, 2017 issue of TIME.

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Write to Julia Zorthian at julia.zorthian@time.com.

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