The term '''underweight''' refers to [[humans]] that have much less [[weight]] than they should. Being underweight is bad for the overall [[health]] of the person affected. It is normal that a person's weights changes over time. Being underweight is often defined using a measure called the [[body mass index]] which calculates a score, based on height and weight. If this score is below 18.5, a person is generally said to be underweight. This is only a general indication, though as the scores must not be calculated for everyone. It does not apply to children and adolescents, for example. | The term '''underweight''' refers to [[humans]] that have much less [[weight]] than they should. Being underweight is bad for the overall [[health]] of the person affected. It is normal that a person's weights changes over time. Being underweight is often defined using a measure called the [[body mass index]] which calculates a score, based on height and weight. If this score is below 18.5, a person is generally said to be underweight. This is only a general indication, though as the scores must not be calculated for everyone. It does not apply to children and adolescents, for example. |