The five core principles are as follows: choose plant-based over processed, eat three mindful meals a day, aim for 80 per cent carbohydrates, ten per cent fat and ten per cent protein, exercise for 30 minutes each day and drink plenty of water.

‘The more your food looks like it did in nature, the better,’ he advises.

‘Think about what your great-grandparents ate: whole foods, grown on farms. If your ancestors wouldn’t recognise what’s on your plate, don’t eat it!’

Mr Borge recommends eating at least two hours before heading to bed, and states: ‘The absolute healthiest way to eat is to 80 per cent fullness, or just a little bit less than full.’

He adds: ‘Successful weight loss is 75 per cent diet and 25 per cent exercise.’

While undergoing the transformative diet, Beyonce regularly posted snaps of her meals to Instagram

She chowed down on meals including portobello mushrooms and vegan mac and cheese

Beyonce isn’t the only Hollywood heavyweight to have adopted a vegan diet, either for health or ethical reasons.

Other notable devotees include Alicia Silverstone, Ellen DeGeneres and her wife Portia De Rossi, Olivia Wilde, Joaquin Phoenix and Tobey Maguire.

‘What I discovered,’ writes Beyonce, ‘was increased energy, better sleep, weight-loss, improved digestion, clarity, and an incredibly positive feeling for my actions and the effects it would have on those around me and the environment.

‘I couldn’t believe how much of our health we can control with food.’

[via Daily Mail]