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My brothers weight is 55 kilos and he is 14 years old. He is also 172 CM tall. Is his weight normal? Because he looks really skinny lookingwithasixpac

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Dr. Ralph Morgan Lewis
Family Medicine

In brief: In normal range

His body mass index (ratio of weight to square of height) is 18.
6 "normal" is considered 18-25; so he's at the low end of normal. His ideal body weight (by 2 different methods) comes to 66 kg, which gives a bmi of 22.6, a value more in the middle of the normal range.

In brief: In normal range

His body mass index (ratio of weight to square of height) is 18.
6 "normal" is considered 18-25; so he's at the low end of normal. His ideal body weight (by 2 different methods) comes to 66 kg, which gives a bmi of 22.6, a value more in the middle of the normal range.
Dr. Ralph Morgan Lewis
Dr. Ralph Morgan Lewis
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