The book, which was the number one Australian non-fiction bestseller of last year and is also available in New Zealand, has just come out in the UK and will be released in the US in April.
No doubt this will increase the number of devotees to Wilson's online eight-week quit sugar programme, of which there are now 180,000 followers. In her latest lifestyle manual, I Quit Sugar for Life, Wilson explains how to banish sugar from your life forever.
"If there's one word that sums up this book it's 'sustainability'. It's not a diet, what I've put together is a wellness plan that is responsible and sustainable."
For 40-year-old Wilson, who has Hashimoto's disease (a type of autoimmune disease that affects the thyroid) eating well is "absolutely non-negotiable".
"Eating well is actually non-negotiable for most people," she says, before citing research on obesity by the Organisation for Economic Co-operation and Development (OECD).
Last year, New Zealand climbed to fourth in the OECD's rankings of advanced nations with the largest proportion of obese citizens (28 per cent) behind the US, Mexico and Hungary. Experts say factors such as rising affluence, a culture of convenience, growing portion sizes and an increasingly sedentary lifestyle have made one in two New Zealanders overweight.
"Sugar is the new tobacco, the health scourge of our times," says Wilson. "It's cheap, addictive and widely available."
Wilson - who eats fruit and 85 per cent cacao chocolate - says she hasn't missed sugar since she last sipped that chai tea three years ago.
"Giving up sugar was easier than I thought, and I felt better than ever, so I just kept going and going."
I Quit Sugar for Life, Your Fad-free Wholefood Wellness Code and Cookbook, by Sarah Wilson, Pan Macmillan, $34.99.
