If a person is obese, I think he should be checked out by a doc before even considering DNP. And also, have checkup throughout.
It would seem to me if someone was that overwieght, they need to work on diet and exercise. Once a plateau is reached then maybe DNP could be used.
I am a strong believer that DNP, should only be used for someone who wants an extremely low body fat. Not for someone who wants to get down to what is considered average.
Nautica