This diet was developed by a French man called Dr Pierre Dukan. The earliest version of the diet appears to be in a French book (in French) called “Je ne sais pas maigrir” (2003). The literal translation of this is “I do not know to slim”!
The book was published in English in 2010 and had big coverage in the Daily Mail in April 2010 for a launch May 2010.
What is the diet?
The diet is in four stages and, to sum it up in a nutshell – it’s all about protein:
Stage 1 is called the initial attack and is intended to be done for 1 to 10 days. The diet says eat nothing but protein (meat, fish, eggs and fat free dairy), but we know that this is strictly fat/protein because everything (other than oils and sucrose) contains protein. It would more accurately be called a very, very low carb diet. Meat/fish are the two zero carb foods, eggs are virtually zero carb and dairy is approximately 5% carb, as a rule of thumb.
Stage 2 is called the cruise phase where you stay until you reach your chosen weight. You alternate pure protein days with vegetable and protein days (we’ll save our opinions till the end!)
Stage 3 is the consolidation phase – where you try to consolidate the weight loss and avoid any rebound re-gain. This has interestingly been calculated very precisely (I don’t know how) that you should be in the consolidation phase for 5 days for every pound lost. So – if you have lost 5 stone, you need to be in the consolidation phase for a year. In stage 3 you can add a piece of fruit, two slices of bread and a serving of cheese each day. Plus you can add 2 starch meals a week e.g. a rice or pasta meal twice a week.
Stage 4 is the stabilisation phase where you have one protein (fat/protein, whatever) day every week. Thursday is recommended (don’t know why!) The web site says “this rule is strict and non-negotiable”.
Another non-negotiable rule throughout all phases is to walk briskly for 20 minutes every day.
What’s good about it?
1) It will work! This is stricter than Atkins Phase 1 and you stay at a lower carb level than Atkins throughout the whole weight loss phase, so this absolutely will work. (Watch out – as it also allows sweeteners – to feed your sweet tooth – as Atkins does, so you may still get cravings for sweet things).
2) It is rightly based on the idea that carbs and not calories are the secret to weight loss.
3) The detail doesn’t say much about the quality of the food, but, being French, this is going to be based on real meat/fish/eggs/dairy products and not processed versions of fat/proteins. It also avoids sugar, white flour and processed foods, which is very positive for health and weight.
What’s not so good about it?
1) It is so strict! You could summarise the stages as:
– Stage 1 is no carb (even veg/salad) whatsoever;
– Stage 2 is Atkins Phase 1 level of veg/salad one day and not even this (back to zero veg/salad) on the next day. And you are supposed to stay on this second stage until you reach target weight;
– Only in Stage 3 can you have the rice that we have in Phase 1 of The Harcombe Diet and only in this third stage can you have cheese and fruit, which we can have after 5 days. And this stage lasts a very long time, given that you should no longer feel like you’re on a diet once you’ve reached target;
– Then, stage 4, you seem to be able to go back to anything (surely not – you must keep people off processed foods having gone to these lengths), but you have a protein only day once a week – this will just drop all glycogen and give a weight loss drop on the scales after a day.
There is no need to avoid vegetables and salads in such a dramatic way, let alone natural fats and nutritious dairy foods.
2) The emphasis is on protein, rather than real food. This diet seems to accept the notion that nature put fat in food to kill humans, which just makes me laugh at the absurdity of the idea. You are not supposed to eat butter or natural meat fat or real milk and the recommended meat/fish foods are lean chicken and fish not in oil, as examples. You are supposed to eat egg whites only (presumably throwing away the most nutritious part of this super food).
Nature puts protein and fat in foods in balance and the fat soluble vitamins (A, D, E and K) are essential for our entire health and well-being. Unnaturally upsetting the natural fat/protein balance is a recipe for fat soluble vitamin depletion and this has critical consequences. Some of today’s protein shake fans are going to have serious health problems in the future. This diet seems to be an adaptation of Atkins, trying to overcome any criticism of Atkins that it can be high fat. Removing the fat can also remove the satiety – not just the nutrients.
3) This would be impossible for vegetarians – you are only allowed up to two eggs per day and you are told to have no more than 3 to 4 egg yolks per week if you suffer high cholesterol. There isn’t enough room here for a full cholesterol rant – but here’s one if you would like one. The body knows you can’t eat enough to meet its needs, so the body makes its own cholesterol. I like to think that any cholesterol from real food (it’s only found in real food – funny that) can only help your body and your body then likely needs to make a bit less – but one of the liver’s 500 roles is to make cholesterol to perform life critical functions and this it will do (unless we take statins, of course, and stop the body being able to carry out this vital function).