Harvard Study: Clean Air Nearly Doubles Cognitive Performance Scores
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Harvard Study: Clean Air Nearly Doubles Cognitive Performance Scores
When most people think about air quality, they think about lungs. But a landmark study from the Harvard T.H. Chan School of Public Health found that the air we breathe has a direct, measurable effect on how our brains perform — at work, at school, and at home.
What the research found
The study, published in Environmental Health Perspectives, tested 24 participants working in controlled office environments with varying levels of ventilation and volatile organic compounds (VOCs). Cognitive performance was tested across nine domains.
- Workers in green+ conditions (enhanced ventilation, low VOCs) scored 101% higher on cognitive function tests than those in conventional office air
- Even the intermediate "green" condition (better ventilation, same low VOCs as typical offices) produced a 61% improvement in cognitive scores
- The biggest improvements were in crisis response, strategy, and information usage — the higher-order thinking tasks
- Response times and decision quality both improved significantly with cleaner air
What VOCs are and why they matter
Volatile organic compounds are gases emitted by everyday products: paints, furnishings, cleaning products, printers, and even personal care items. They accumulate indoors — particularly in well-sealed modern homes — and affect concentration, mood, and decision-making even at levels well below safety thresholds.
The EPA has identified indoor air as 2–5 times more polluted than outdoor air, with VOCs as a primary contributor in most UK and European homes.
The bedroom and home office implications
We spend more time at home than anywhere else. For remote workers, students, and anyone who values clear thinking, the air quality in the rooms where they work and sleep directly shapes their output. The Luggable Ultra XL uses MERV-13 filtration to capture airborne particulates and reduce the pollutant load that accumulates in sealed rooms overnight and during the working day.
The study
Allen, J.G. et al. (2016). Associations of Cognitive Function Scores with Carbon Dioxide, Ventilation, and Volatile Organic Compound Exposures in Office Workers. Environmental Health Perspectives, 124(6), 805–812. DOI: 10.1289/ehp.1510037
