Unveiling the Landmark COIN-EU Study Led by Europe's Top Universities
Recent research spearheaded by leading European universities has brought Europe's sleep crisis into sharp focus. The Cost of Illness in Neurology in Europe (COIN-EU) project, funded by the European Academy of Neurology (EAN) and involving experts from institutions like the University of Bern in Switzerland, University Duisburg-Essen in Germany, Ghent University in Belgium, and the Medical University of Vienna in Austria, has quantified the staggering toll of sleep disorders. Published in the European Journal of Neurology in February 2026, this cost-of-illness analysis covers five major sleep disorders across 47 EAN member countries, revealing an annual economic burden of nearly €423 billion in high-income Europe alone—equivalent to about 3% of the region's collective GDP.
The study, drawing on systematic reviews of literature from 2010 to 2023 and expert input, highlights how insomnia, obstructive sleep apnea (OSA), restless legs syndrome (RLS), narcolepsy, and REM sleep behavior disorder (RBD) affect up to 30% of Europeans. While direct healthcare costs account for 48% of the total, indirect costs from lost productivity make up the remaining 52%, underscoring the profound societal ripple effects. OSA tops the list at €184 billion, followed closely by insomnia at €158 billion.
Defining the Core Sleep Disorders at the Heart of the Crisis
To grasp the scope, it's essential to define these conditions. Insomnia disorder (ICD-10 G47.00) involves difficulty falling or staying asleep, affecting 10% of adults and leading to daytime fatigue. Obstructive sleep apnea (OSA, G47.33), prevalent in 18% of those over 30, occurs when airways collapse during sleep, causing repeated breathing pauses and oxygen drops. Restless legs syndrome (RLS, G25.81) features uncomfortable leg sensations prompting movement, impacting 3%. Narcolepsy (G47.41, 0.03%) brings sudden sleep attacks and cataplexy, while RBD (G47.52, 0.009%) entails acting out vivid dreams due to lost muscle paralysis.
These disorders aren't isolated; they exacerbate risks for dementia, stroke, depression, diabetes, and cardiovascular disease, impairing cognition, mood, and performance. University researchers emphasize that untreated cases amplify comorbidities, straining healthcare systems already burdened by aging populations.
Prevalence Rates: A Continent-Wide Public Health Challenge
Prevalence varies but is alarmingly high. The COIN-EU team pooled data showing OSA at 18% in adults over 30, insomnia at 10%, RLS at 3%, narcolepsy at 0.03%, and RBD at 0.009%. High-income countries like Germany (€106 billion total cost) and France (€68 billion) bear the brunt, but data gaps in middle-income EAN nations suggest underestimation. Per-capita costs range from €372 in Croatia to €1,855 in Switzerland, with a median of €620.
This epidemic hits close to home in academia, where demanding schedules mirror workforce stressors. European studies report poor sleep in 30-67% of university students, often linked to academic pressure.
The €423 Billion Breakdown: Direct vs Indirect Costs
Delving into economics, direct costs (medical and non-medical) comprise 48%, while indirect productivity losses dominate at 52%. OSA's €184 billion includes €1023 per patient direct and €1734 indirect; RBD's high per-patient €14,234 reflects rarity but severity. Figures 1 and 2 in the study visualize these, showing OSA and insomnia as GDP heavyweights at 1.32% and 1.14% respectively. For context, the UK's share alone nears €39 billion, rivaling major infrastructure spends.
Read the full open-access paper for detailed tables: Epidemiology and Economic Burden of Sleep Disorders in Europe.
Productivity Losses: A Drag on Europe's Academic and Economic Engine
Indirect costs stem from absenteeism, presenteeism (reduced efficiency), and early retirement. RLS patients face €4,827 indirect per person, narcolepsy €5,868. In higher education, where cognitive demands peak, sleep-deprived staff and students suffer diminished focus, creativity, and output. A Luxembourg-Germany study found sleep disturbances in students correlate with mental strain and lower grades.
European universities, employing millions, risk innovation lags if unaddressed. The EAN urges integrating sleep health into workplace policies, starting with campuses.
Sleep Struggles in European Universities: Student and Staff Realities
University life amplifies the crisis. Surveys show 38-67% of students report poor sleep quality, with stress (85%), academics (67%), and worries (56%) as culprits. Insomnia hits 30.5% in Norway; daytime sleepiness impairs performance. Faculty face similar issues, with shift-like schedules mimicking RLS symptoms.
Impacts? Lower GPAs, higher dropout risks, mental health declines. A meta-analysis links poor sleep to stress in students, perpetuating cycles. Universities like those in the UK report 47% stressed students with sleep deprivation.
Explore more on student wellbeing via the European Sleep Research Society.
Europe's Vanguard Universities in Sleep Research
Addressing this, universities lead. The Surrey Sleep Research Centre (UK) pioneers circadian studies; Northumbria Centre advances clinical trials. Zurich's Sleep & Health network integrates chronobiology; Turku's Sleep Research Centre tackles breathing disorders; Freiburg's Center focuses on neurology links. ESRS coordinates 100+ labs, fostering collaborations like COIN-EU.
Ghent, Leiden, Grenoble Alpes contribute to diagnostics. These hubs train specialists, develop apps for tracking, and advocate policy—vital for HE where sleep fuels learning.
Health Ramifications: From Cognition to Comorbidities
Beyond economics, sleep disorders heighten dementia, stroke, depression risks. OSA fragments sleep, spiking cardiovascular events; insomnia fuels anxiety. Students risk burnout; staff, errors. Long-term, DALYs unquantified but massive, per COIN-EU gaps.
Emerging Solutions from Academic Innovation
Universities innovate: CBT-I apps from Oxford; CPAP adherence tech from Bern. ESRS pushes education; Sleep Revolution (EU-funded) uses ML for OSA. Campuses implement wellness: nap pods, blue-light policies. Early screening cuts costs 50%.
See EAN's project page: COIN-EU Overview.
Policy Imperatives and University Advocacy
COIN-EU calls for sleep in public health agendas, GBD inclusion. Universities lobby: fund research, mandate training. EU strategies could save billions via prevention.
Photo by Abbie Bernet on Unsplash
Outlook: Awakening to a Restored Europe
With university-led insights, Europe can tackle this crisis. Prioritizing sleep boosts GDP, academics thrive. Action now yields healthier futures.