Research

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.

GoodQualifiesHIGH confidence
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.
Céline Vetter et al. · Diabetes Care · 2015

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

cohort · n=64615Cited 193×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →