The condition affects roughly six million Americans, although experts believe the real number may be closer to 30 million.

Feeling sleepy and less enthusiastic during the day may indicate a higher risk of developing a syndrome that often leads to dementia, a new study has found.

Obstructive sleep apnea is a common condition that impacts about 39 million adults in the U.S. But if it’s left untreated, it raises the risk of developing a host of serious conditions, including heart, kidney, and metabolic health complications.