This morning Davis, who runs food blog The Internet Chef, told Newshub her top tips for losing weight:
* Cutting out gluten, especially bread or anything with white flour in it
* Cutting out sugar
* Reducing the amount of dairy
* Start the day with protein, like chicken or eggs
* Lunch should be the largest meal of the day and include protein
"As a middle-aged woman with three children, I thought being overweight was just part of life. Now that I realise that I was just putting the wrong things into my body and have taken those out of my diet, I have more energy than I've ever had, my mood swings have elevated," she told Newshub.
"I look at life so differently - I've written three cookbooks in a year and a half, that's how much energy I have!"
Her latest cookbook is Bridget's Healthy Kitchen.