I quite often get questions about how to lose weight, what the best diet is, what vitamins to take, and so on. The first thing I always say in these cases is to listen to what your body is telling you - your OWN body, rather than what you might imagine or what you really want to achieve. This is extremely important, because even the most hyped-up diet could turn out to be unsuitable (or downright harmful!) for you personally.

You need to take advice form a doctor (or even better, from a dietician) and do all the proper tests. Find out why you are overweight or underweight (in your opinion). But never invent a diet for yourself or take miracle slimming potions. These self-prescribed diets can be disastrous, because you can upset your body very easily and quickly and it’s then a long hard slog back to health.

My attitude towards vitamins and food additives is the same. You should never trust the adverts. The best way of being sure is to consult a doctor.