HGH has effects on all cells in the body, including fat cells.
When you're losing weight, the unfortunate truth is that you are shrinking your fat cells, not destroying them...once you have a fat cell it is there for life. To destroy a fat cell completely you would have to take drugs like DNP...t-3, clen, ECA or any other fat burning drug or combo you can think of does not destroy fat cells.
Now, certain hormones can alter the way in which the fat cell functions, the rate at which it grows, remains or doesn't remain dormant. HGH can have a positive effect in this manner...t-3 does not.
When it comes to HGH it has become a well known fact that it can seriously alter the dreaded homeostasis factor in the body in a permanent way...drugs like t-3 for lack of a better description mirror this effect, the effect is not as "true."