Naomi Manser, 47, is an events coordinator and lives in Exeter with husband Steve and their two children Scarlett, nine, and Wilson, six.
“Growing up in Australia, I used to have a very active lifestyle, swimming most days and eating lots of fruit and salads. At 5ft 2in and a slim size 10-12, I was confident about my body. But everything changed after I moved to the UK in 2000.
“Working as a project manager, I grew to love stodgy British food like pie and mash. Three years after I arrived in London, I met Steve in a bar. By then I was a size 12-14, but I was still happy with how I looked.
“After four years together, Steve and I started IVF, as we were desperate for a family but couldn’t conceive naturally. For the next five years, my weight fluctuated as I comfort-ate through every failed fertility treatment.
I’d joke about my weight, but my self-esteem was rock- bottom.
“In 2012 we adopted Scarlett and Wilson, and in no time I was snacking all day, picking at their leftovers and treating myself to cake on playdates with other mums. By the end of last year I was the heaviest I’ve ever been at 15st, hiding under baggy jumpers and trying not to let Steve see me naked as I felt so ashamed.
“I’d joke about my weight, but my self-esteem was rock- bottom. My children look to me as a role model, so I need to help them grow into confident, healthy adults. How could I do that if I wasn’t like that myself?”