Our expert says:
I can't really judge if you are overweight or not, because you did not give me your height in metres so that I can work out your BMI. You can do this for yourself by clicking on 'Diet' at the top of this page and then on 'Tools' and working out your BMI. If it is between 18 and 25 then your weight is in the normal range. If your weight is normal, disregard the gym instructor and carry on with your normal diet and the exercise. The weight gain after joining the gym is probably due to an increase in muscle mass which weighs more than other body tissues.
Your anti-depressants may cause weight gain, but as I said before, if your weight is in the normal range, then relax.
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