Our expert says:
I presume with 'starch' you mean all carbohydrates (sugars, cereals, bread, starchy vegetables, fruit and even milk which contains a moderate amount of milk sugar or lactose)? If you cut out all carbohydrates your body is deprived of its best source of instant energy and will have to break down the 2 remaining so-called macronutrients, namely proteins and fat as a source of energy. You will lose weight, but you will also lose muscles tissue as your body starts burning protein for energy. The byproducts of fat breakdown namely ketones can be harmful if their levels in the body are too high, a condition called ketosis. High-protein, high-fat diets are based on the principle of cutting out practically all carbohydrates and forcing the body to obtain its energy from protein and fat. In general it is better to eat a balanced diet that contains some carbs with what is called a low-glycaemic index (GI) to ensure that you do have a ready supply of energy so that you can function properly and do some exercise and can avoid ketosis. An ideal slimming diet should be balanced, it should contain all 3 macronutrients (carbs, proteins and some fats) and it should be energy-reduce so that you lose weight.
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