Chennai: New research from India suggests gestational diabetes (GDM) may develop much earlier in pregnancy than previously believed – even during the first trimester. This revelation comes from two major studies involving Dr. V Mohan and a team of national and international experts, highlighting the importance of early screening for women and their babies.

Traditionally, GDM is tested for between 24 and 28 weeks of pregnancy. However, the studies introduce the concept of Early GDM (EGDM) for cases detected in the first trimester, while later-onset cases are classified as Late GDM (LGDM).

What do the studies reveal about GDM in India?

The ICMR–INDIAB Study, a national survey of 1,032 pregnant women across India, reported a GDM prevalence of 22.4%, with early GDM at 19.2% and late GDM at

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