Regardless of how well this particular case works, I'm in favor of people being able to modify their bodies as they see fit. If he wants to become more muscular, morbidly obese, or ten feet tall, that's his right. Unfortunately, I could see things like this becoming illegal solely because they help people play sports too well.
>If he wants to become more muscular, morbidly obese, or ten feet tall, that's his right. Not necessarily. We as a society have come up with many activities which seem, on their surface, to only harm the individual, but are illegal. This shares many concerns with drug use, gambling, etc. Killing yourself harms others, and society has a vested interest in the population being healthy and productive. If you harm yourse…
If you can edit your genes in a bizarre way for cheap, I imagine it wouldn't be very expensive to reverse such a modification.