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A 37-year-old member asked:

I'm a 16 year old girl, height: 162cm, weight: 42 kg, if i eat 2600+ calories a day, how much weight would i gain?

1 doctor answer1 doctor weighed in
Dr. Alan Feldman
43 years experience
1 kg: Your BMR (basal metabolic rate) calculates to about 1300 cal/day. If you did no exercise and ate 2500 cal/day you would gain 1200 cal/day, times 7 is 8400 cal. This is equivalent to just over 1 kg of weight or 2.4 lbs. Since you are significantly underweight currently, you need to eat more (and exercise) until your bmi is above 18.
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Last updated Aug 8, 2017


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