Thanks for your question. First I need to say that whilst I'm sure there are lots of good concepts in the book, the basic premise is not scientifically correct! Whilst reducing calories does depress metabolic rate whilst you are doing it, many scientific studies - notably those by Dr Susan Jebb of the Medical Research Council’s Human Nutrition Research unit - have shown that your metabolic rate recovers when you start eating larger amounts again. Even if you've lost and regained weight countless times, you can hold onto the knowledge that you will not have wrecked your chances of staying slim forever.

On a similar topic, whilst it's true that the body will try hard to hold on to its fat reserves if you reduce calories drastically, the concept of weight loss stopping altogether or even reversing  (so you put weight on) if you eat too little is completely false.

What does happen is that below a certain level of calorie restriction – about 1200-1400 calories - the EXTRA weight you lose becomes insignificant enough as to make the additional restraint and effort involved not worthwhile. You'll be hungry too, and end up throwing in the towel. That's why the optimum calorie intake for efficient weight loss is 1200-1500 a day.

Where I can agree is that it's NOT EASY to reduce calories and/or be more active, as we all must do if we want to lose weight! So to get and stay trim we need to calorie control our diets but try to find a healthy way of eating that we can stick to for life rather than always “dieting”. Some people are naturally very good at controlling calories without the need to count them. Our approach is to help people with getting the weight off, by making them aware of how fine the balance is  - it only takes a few extra calories a day to gain pounds steadily over time!

Naturally slim people have the inherent ability to balance their foods and exercise in a way that keeps them in energy balance so they neither gain nor lose weight. Some people respond to a dieting method that teaches them the tricks they need to naturally control calories without actually counting them. Others find calorie counting and the keeping of a food diary- the Nutracheck approach – the best way to manage weight. Whichever approach you use – and the Nutracheck way is proven by research – keeping the weight off is always a problem unless you change your habits for good.