2 doctors weighed in:
What are men like if extra y chromosome?
2 doctors weighed in

Dr. Ed Friedlander
Pathology
1 doctor agrees
In brief: XYY
This syndrome is fairly well-known and one man in a thousand has it.
Usually they escape detection as their intelligence matches the general population. They tend to be tall (which is fun) and get nasty acne (which is treatable). In my small series, parents write that they tend to speak later than other kids. The "natural criminal" stuff is media hype.

In brief: XYY
This syndrome is fairly well-known and one man in a thousand has it.
Usually they escape detection as their intelligence matches the general population. They tend to be tall (which is fun) and get nasty acne (which is treatable). In my small series, parents write that they tend to speak later than other kids. The "natural criminal" stuff is media hype.
Dr. Ed Friedlander
Dr. Ed Friedlander
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