You can decide influence a lot  yourself depending on your wishes and the work you are willing to put in. In the larger studies where one of the modern types of substance was used, weight loss was 16% in 12 months on average. Our experience is that some people who are in a large calorie deficit can lose weight very quickly (20-30 kg in 12 weeks) without experiencing the discomfort that is usually associated with such a fast weight loss. There is no right or wrong, but if you lose weight quickly, you have to be careful to ensure that you maintain muscle mass with exercise and extra protein so that you don't lose too much muscle in relation to fat.

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