Picture falling asleep, your airway eventually conspiring against you, caving in on itself, blocking and waking your body in a muted battle for breathable air. This is the nightly reality of millions who suffer from obstructive sleep apnea (OSA), a disorder often underestimated as excessive snoring, but recent research shows carries much graver consequences.
A new study presented at the European Congress on Obesity (ECO) 2026, Istanbul, Turkey, 12–15 May, provides fresh insights into OSA: compared to those without OSA, just under three-quarters of people living with the condition are 71% more likely to experience a cardiovascular event (CVE) or die from whatever cause.
The study, led by Imperial College Health Partners; Imperial College Healthcare NHS Trust, London, UK; and Eli Lilly and Company (Lilly), draws on electronic health records from 2.9 million residents of North-West London. It is, to date, one of the largest matched case-control studies of OSA outside the U.S.
20,300 people with OSA were matched against 97,412 comparators.
Within four years, 26.3% (5,342) of OSA patients experienced CVEs or all-cause mortality, compared to 17.5% (17,079) of controls.
OSA patients also showed higher rates of developing obesity (5.6% vs 4.0%), diabetes (6.8% vs 4.6%), osteoarthritis (4.2% vs 3.0%), anxiety (5.2% vs 3.2%), and depression (4.7% vs 3.0%).
Healthcare resource use was significantly greater: 21 vs 14 primary care visits per person-year, more outpatient attendances, and more inpatient days.
OSA is not just about disrupted sleep. It is a condition intertwined with obesity, cardiometabolic risk, and healthcare costs. Despite therapies like CPAP machines, OSA remains underdiagnosed and undertreated, leaving many vulnerable to its hidden dangers.
Co-author Heather Fitzke, Imperial College Health Partners, London, UK, emphasizes:
“In adults, obstructive sleep apnea is linked to a higher risk of cardiovascular events or all-cause mortality, especially among those with obesity, even after adjusting for confounders. These findings underscore the need for effective obesity management and highlight the importance of early screening and timely diagnosis. To our knowledge, this is the largest matched case-control study of obstructive sleep apnea outside the U.S. to date.”
This research repositions OSA as a public health challenge rather than purely a sleep disorder. It is a condition that not only steals sleep away from the people who need it but also insidiously undermines cardiovascular health and adds to healthcare costs while increasing the burden of obesity-related disease.
The message now is clear: early diagnosis, management of obesity, and awareness are the keys. Sleep should be a sanctuary, not a silent danger in terms of heart disease and early death.
