I want to lose weight - which diet is best?

The low GI diet

GI stands for glycaemic index, which is all about the sugar levels in your body. The low GI diets aim to keep your blood sugar level running at a constant level not bouncing up and down.

This is a more flexible version of a low-carb diet. It allows you to eat "good" carbs. So you can have your pasta or bread or rice fix as long as it's wholemeal/brown and in limited quantities.

It's a pretty simple diet which should make it easier to fit into your life. Food is divided into traffic lights; red, amber and green. If it's green, eat as much as you like. If its amber, eat in limited quantities. If it's red, don't touch the stuff.

No calorie or carb counting, you just get to know what you can and can't eat. It's a generally all-round healthy diet, again particularly good for people with diabetes or polycystic ovary syndrome (PCOS). You'll find it in books and online. Some supermarkets label their food with a GI marker.