Our expert says:
Dear Me Again
Why do you want to lose weight when your BMI is ideal?? Generally speaking you need to reduce your energy intake by about 500 cal or 2100 kJ a day. So for adult women this would amount to an intake of about 1500 cal or 6300 kJ a day to lose 1 kg per week. To maintain body weight, which is what I think you should actually do, you need 2000 cal or 8400 kJ per day. The reason why people are advised to cut down on fat intake is that fat provides the most energy per gram of all nutrients (i.e. 37 kJ per gram), so cutting down on fat intake reduces energy intake more than cutting out carbohydrates or proteins which provide about 16-17 kJ per gram.
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