We have many ways of defining [ab]normality in human physiology and behaviour. Statistical abnormality, what you are using in your comment, is just one, and it

We have many ways of defining [ab]normality in human physiology and behaviour. Statistical abnormality, what you are using in your comment, is just one, and it alone is insufficient: if we only relied on statistical abnormality, maths geniuses would be just as in need of treatment as those with downs syndrome! So, we must consider other factors, such as distress, social norms, and maladaptivity. Obviously these bring their own attendant set of intractable ethical problems. Such is the lot of the medical practitioner. See https://secure.wikimedia.org/wikipedia/en/wiki/Abnormality_(behavior) https://secure.wikimedia.org/wikipedia/en/wiki/Abnormality_(...