Eligible women will be identified at their first hospital antenatal visit to a university affiliated maternity hospital in Melbourne, Australia.
Inclusion criteria are women
with a singleton, live gestation between 10
+0
and 17
+6
weeks who have a self-reported pre-pregnancy, body mass
index (BMI) > 25 kg/m
2
and own a mobile phone. Exclusion criteria include: < 18 years of age; multiple pregnancy;
comorbidities requiring significant medical and dietary
management; discontinuation of care at hospital; or insufficient English to understand the intervention.