Trends in prevalence of type 2 diabetes and intermediate hyperglycaemia in Mauritius from 1987 to 2021 based on results from the oral glucose tolerance test: a repeated cross-sectional study.

Age- and sex-standardised type 2 diabetes prevalence in Mauritius rose from 14·7% in 1987 to 23·3% in 2009, then fell to 19·9% in 2021.

• Why it matters: National OGTT-based trend data for type 2 diabetes and intermediate hyperglycaemia are scarce, limiting evidence on whether prevention and control efforts reduce burden over time.
• What they did: Repeated cross-sectional surveys in Mauritius (1987, 1992, 1998, 2004, 2009, 2015, 2021) assessed adults aged 25–74 years (36,744 attendances) using WHO 2006 OGTT criteria.
• The result: Intermediate hyperglycaemia increased from 20·8% in 1987 to 24·9% in 2009, then declined to 15·6% in 2021, and newly diagnosed diabetes fell from 67·0% to 32·5%.

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