It is important to know that weight gain and weight loss are based on the calories you consume and the calories you burn. The word ‘calorie’ refers to the amount of energy our bodies can get from any food. Some foods have fewer calories and some have more. For example, carbohydrates (types of sugar) and proteins have 4 calories/g, whereas lipids (types of fat) have 9 calories/g and alcohol 7 calories/g.

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