RT Journal Article SR Electronic T1 Acceptability and adherence to a Mediterranean diet in the postnatal period to prevent type 2 diabetes in women with gestational diabetes in the UK: a protocol for a single-arm feasibility study (MERIT) JF BMJ Open JO BMJ Open FD British Medical Journal Publishing Group SP e050099 DO 10.1136/bmjopen-2021-050099 VO 11 IS 12 A1 Bolou, Angeliki A1 Lanz, Doris A1 Drymoussi, Zoe A1 Gonzalez Carreras, Francisco Jose A1 Austin, Frances A1 Dodds, Julie A1 Mehay, Anita A1 Pizzo, Elena A1 Thomas, Amy A1 Heighway, James A1 Sanghi, Anita A1 Harden, Angela A1 Pérez, Teresa A1 Pardo Llorente, Maria del Carmen A1 Hitman, Graham A1 Huda, Mohammed SB A1 Thangaratinam, Shakila YR 2021 UL http://bmjopen.bmj.com/content/11/12/e050099.abstract AB Introduction Women with gestational diabetes are at increased risk of developing type 2 diabetes later in life. In at-risk general populations, Mediterranean-style diet helps prevent type 2 diabetes. But its effect on postnatal women with a history of gestational diabetes is not known. Prior to a full-scale trial on Mediterranean-style diet in the postnatal period to prevent type 2 diabetes, a feasibility study is required to assess the acceptability of the diet and evaluate the trial processes.Methods and analysis MEditerranean diet for pReventIon of type 2 diabeTes is a single-arm feasibility study (65 women) with qualitative evaluation of women who have recently given birth and had gestational diabetes. The intervention is a Mediterranean-style diet supplemented with nuts and olive oil, with dietary advice and an action plan. A dedicated Health Coach will interact with participants through an interactive lifestyle App. Women will follow the intervention from 6 to 13 weeks post partum until 1 year post partum. The primary outcomes are rates of recruitment, follow-up, adherence and attrition. The secondary outcomes are maternal dysglycaemia, cost and quality of life outcomes, and acceptability of the intervention to participants, and to healthcare professionals delivering the intervention. Feasibility outcomes will be reported using descriptive statistics.Ethics and dissemination Ethical approval was obtained through the South Central—Berkshire Research Ethics Committee (19/SC/0064). Study findings will be disseminated via publication in peer-reviewed journals, as well as via newsletters made available to participants and members of Katie’s Team (a women’s health patient and public advisory group).Trial registration number ISRCTN40582975.