Does metformin benefit pregnant women with PCOS?

Fewer preterm deliveries and late miscarriages seem to occur with its use

Women with polycystic ovary syndrome, but no diagnosed diabetes, are less likely to have a late miscarriage or preterm birth if they take metformin either before or during pregnancy, a study suggests.

Pregant women outdoors

The authors, who believe they are the only researchers worldwide investigating the use of metformin in PCOS to reduce pregnancy-related conditions, say the results suggest that the drug may reduce late miscarriage and preterm delivery when used during pregnancy.

However, two expert commentators say the results imply that taking the drug before conception