The Fast Diet, also know as the 5:2 Diet became popular in the UK after BBC2’s Horizon documentary ‘Eat, Fast & Live Longer’ was broadcast on 6 August 2012.
The program’s producer and presenter Michael Mosley, a British journalist and medical doctor asserts that it’s natural to fast and that scientific studies (on rodents at least) show that living on a low calorie diet is good for health and leads to a longer life.
The diet is based on the precept that limiting yourself to only 500 calories (for women) or 600 calories (for men) per day on two non-consecutive days per week will help you lose weight as well as achieve a new level of health.
Dieters are encouraged
- to weigh and measure every 2 weeks
- fast on regular days – e.g. Mondays and Thursdays
- not to skip breakfast (if it’s normally eaten)
- eat protein and loads of non-starchy vegetables
- replace starchy carbs with carrots, broccoli and peas
Intermittent fasting is said to work by sending the body into 'repair mode' which requires more energy, rather than ‘starvation mode’ which slows your metabolism and encourages fat storage when you return to normal calories.
If the regime is followed, Fast dieters should lose about 3 – 3 ½ kg (7.5 lbs) in 6 weeks.