Im just curious and have thought about this for quite some time. The obvious answer is no, becuase its just a stimulant but here it goes.
If a person who used many different types of fat burners over the years, some clen, ephedra, thermogenics(stackers,lipo6,redline....etc) can the body be tricked into not burning fat by itself at all or as easily as it once did. If it is is there anyway to undo the damage or kind of restart your body perhaps a complete detox. I dont know I just find my body not shedding fat the way it once did a few years ago and its even harder know even though I have much mroe knowledge. A few years back I shedded 25+ pounds easily through some running and cleaner diet, now I struggle to lose 10 pounds of fat over months with a much better diet and knowledge of cardio etc.