Maternal but not fetoplacental health can be improved by metformin in a murine diet-induced model of maternal obesity and glucose intolerance.

"Competing interests: The authors declare that they have no competing interests."

"Funding This work was supported by the BHF [PG/13/46/30329] and the MRC [MC_UU_00014/4]. CEA is supported by a Medical Research Council New Investigator Grant (MR/T016701/1). AH was supported by a Wellcome Trust studentship [108926/B/15/Z]. SEO is a member of the Cambridge BHF Centre of Research Excellence [RE/18/1/34212]. SEO and DSFT are supported by the Medical Research Council (MC_UU_12012/4) and the British Heart Foundation (RG/17/12/33167). The histology core is funded by the MRC [MC_UU_00014/5] and the imaging core of the Institute of Metabolic Science by a Wellcome Major Award [208363/Z/17/Z]. This research was funded in part by the Wellcome Trust [108926/B/15/Z]. For the purpose of open access, the author has applied a CC BY public copyright licence to any Author Accepted Manuscript version arising from this submission."