Having known a number of prostitutes for a few years, it seems, atleast in my experience, that in general they do not age well. ( i.e. show accelerated aging features on the face, weight gain, etc)
Granted, there are some exceptions, but outliers do not invalidate that there may be a norm.
What could be the possible reasons for this? I think a combination of diet and stress.
Stress is well known to accelerate aging. Stress is generally a response to uncertainty. and prostitution must surely be a very chaotic and uncertain business for WG's