Hormonal
For early chronotypes (morning types), rotating night shift work increases type 2 diabetes risk as the duration of exposure increases, whereas for late chronotypes (evening types), daytime work schedules are associated with significantly higher diabetes risk compared to those working night shifts.
If you are a 'morning person' (early chronotype), long-term rotating night shifts significantly increase your type 2 diabetes risk. If you are a 'night owl' (late chronotype), working day shifts is actually riskier for your metabolism than working night shifts. Align your work schedule with your natural sleep preference to minimize metabolic risk.
In early chronotypes, type 2 diabetes risk increased with increasing duration of shift work exposure, whereas late types had the highest diabetes risk working daytime schedules.
Why this rating
Large prospective cohort (NHS2, n=64,615) with long follow-up and rigorous adjustment for confounders, though observational design limits causal inference.
Source
Mismatch of Sleep and Work Timing and Risk of Type 2 Diabetes
Céline Vetter et al. · Diabetes Care · 2015
DOI 10.2337/dc15-0302
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