Contrary to what The Fast Diet book might tell you about expecting to lose 1lb per fasting day, the reality according to the 5:2 weight loss statistics we have gathered at the 5:2 forum are somewhat different.
Indeed, as with any diet the early losses tend to be greater as much of this is simply water weight being lost.
On average it would seem that a stone (14lbs) can be lost in the first 5-8 weeks of eating the 5:2 way, depending on factors such as your starting size/BMI and activity level.
Following this initial loss our statistics show that the rate of weight loss slows down to a steady 1lb per week on average. Those with more weight to lose may find they can keep losing 1.5-2lbs a week for some time longer before slowing down and those with less to lose may well find it a struggle to even lose 1lb a week.
In no way is this diet a quick fix, but I find it to be a worthwhile trade off. Two days a week I eat less and I gradually lose weight while still enjoying my food. With some of the other popular diets or slimming clubs I would be expected to give up on certain foods or cut my intake every day of the week. For that level of sacrifice 1lb a week might seem meagre – but I’m not making that kind of sacrifice with 5:2, so this really feels like something sustainable for me. This is a sentiment echoed by many others at the forum.
To get a realistic idea of the sort of loss you could achieve you are welcome to register with the 5:2 Diet Progress Tracker at the forum which will then allow you to filter the statistics & charts by age, gender, starting BMI etc. By selecting the settings which most closely match your circumstances you can see the results others like you have achieved with intermittent fasting.