B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
33%
33% -- percentage increase for stroke risk (2026)
Working more than 55 hours a week increases stroke risk by 33% compared to working a 35- to 40-hour week.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
33%
Unit
Percentage
Data Vintage
2026
Entity
Geography
Global
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Sources (3)
University College London
Primary
Tier B
http://www.alistdaily.com/insights/many-tasking-work-optimized.html ↗
Source Article
Many-Tasking: Work Optimized
As professionals, we feel a need to present the facade that we are busy people. Busy, in our minds, relates to getting work done, taking on a lot, feeling needed, making a difference, and, overall, being successful.
But as many people find out, there are two kinds of busy: using “busy” as a cover fo…
Original Research
University College London
· Original study ↗
Methodology
Working more than 55 hours a week compared to a 35- to-40-hour week
Segmentation
IndustryHealthcare
RegionGlobal
Cite this stat
Plain Text
stroke risk: 33% percentage increase. Source: University College London (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/stroke_risk_increase_percentage
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<blockquote cite="https://lighthousedata.io/data/stroke_risk_increase_percentage" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>33%</strong> -- percentage increase for stroke risk<br><small>Source: University College London (2026) · <a href="https://lighthousedata.io/data/stroke_risk_increase_percentage" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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