Type 2 & other diabetes

Association of prediabetes progression and regression with cognitive decline: Findings from the China Health and Retirement Longitudinal Study (CHARLS)

Diabet MedPublished Prospective cohort study

Main finding · Change in episodic memoryResult — go to the resultβ −0.11 95% CI −0.22 to 0.003

Authors' conclusion

In people with prediabetes, progression to diabetes may be associated with accelerated cognitive decline but regression to normoglycaemia does not retard cognitive decline. Prediabetes progression and regression may not be predictive of change in cognitive function.

Study context

Population
Adults with prediabetes (ADA criteria) in the China Health and Retirement Longitudinal Study (CHARLS); 56% women, mean age 58.6 ± 8.4 yearswith prediabetes
Participants
2,590 adults
Exposure
Prediabetes progression or regression vs remaining prediabetes
  • Remained normoglycaemian = 858
Outcome
Change in cognitive function (standardized total score, episodic memory and mental status)
Follow-up
2011 to 2015 and 2015 to 2018
Methodological detailsthree waves (2011, 2015 and 2018)
  • Three waves (2011, 2015 and 2018)

Main finding

Change in episodic memory · 2011 to 2015

β

−0.11

95% CI −0.22 to 0.003

P = 0.057

Change by group

Progressed to diabetes

12%

Regressed to normoglycaemia

41%

As reported in the abstract

Observational data: associations, not effects.

Further findings

Change in cognitive function 2015 to 2018

Neither prediabetes progression nor regression predicted change in cognitive function

Remained normoglycaemia (separate group, n = 858) vs remained prediabetes · 2011 to 2015 and 2015 to 2018

Changes in cognitive function similar to those who remained prediabetes

Original publication

Association of prediabetes progression and regression with cognitive decline: Findings from the CHARLS. Diabet Med. Published 23 July 2023. doi:10.1111/dme.15180

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