The pharmaceutical manufacturer Eli Lilly announced on Wednesday that its obesity drug tirzepatide, or Zepbound, provided considerable relief to overweight or obese people who had obstructive sleep apnea, or episodes of stopped breathing during sleep.

The results, from a pair of yearlong clinical trials, could offer a new treatment option for some 20 million Americans who have been diagnosed with moderate to severe obstructive sleep apnea. Most people with the condition do not realize they have it, according to the drug manufacturer. People with sleep apnea struggle to get enough sleep, and they face an increased risk for high blood pressure, heart disease, diabetes, strokes and dementia.