Does the number of calories change based on age or weight in a Low-Calorie Diet?
Not really. The main determinant for the number of calories is gender and that's because metabolism varies between men and women.
Men should consume around 1,100 calories per day, while women should consume around 800 calories per day. These numbers don't apply on pregnant women or individuals with chronic diseases, such as; diabetes or hypertension. Therefore, you should watch out. Do consult your doctor or dietitian to make sure you get all the nutrients that you need while on a low-calorie diet.