Matthew Walker on sleep: what the evidence says · JRE #1109
SUBJECT: SLEEP
The short answer
Walker claims a RAND Corporation study found that insufficient sleep costs most nations about 2% of their GDP. RAND's 2016 report "Why Sleep Matters: The Economic Costs of Insufficient Sleep" (published in RAND Health Quarterly in 2017) modeled sleep-related productivity and mortality losses across five OECD economies, estimating annual GDP losses of 2.28% for the United States, 2.92% for Japan, 1.86% for the United Kingdom, 1.56% for Germany, and 1.35% for Canada, an average just under 2%.
Not a true/false call. Every claim is logged with its sources; read the exhibits below.
the Rand Corporation did an independent survey 2 years ago on the demonstrable cost of a lack of sleep to Global economies. What they found was that a lack of sleep cost most Nations about 2% of the GDP the gross domestic product
What the evidence says 01 / RECORD
Walker attributes to RAND Corporation a finding that lack of sleep costs most nations about 2% of GDP. RAND's 2016 report "Why Sleep Matters: The Economic Costs of Insufficient Sleep" (published in RAND Health Quarterly in 2017) modeled sleep-related productivity and mortality losses across five OECD economies, estimating annual GDP losses of 2.28% for the United States, 2.92% for Japan, 1.86% for the United Kingdom, 1.56% for Germany, and 1.35% for Canada, an average just under 2%. The analysis was a macroeconomic model built on survey and labor-market data rather than a single standalone survey, and it covered five wealthy economies rather than "most nations" worldwide, so Walker's framing overstates the study's methodology and scope somewhat. The specific "about 2%" figure and the roughly two-year-old timing (report released 2016/2017, cited in an April 2018 conversation) are accurate to the underlying RAND research, which continues to be cited in peer-reviewed sleep-economics literature, including a 2024 European Journal of Health Economics study applying RAND's methodology to Argentina. Overall status: well-supported.