Leptin is a hormone and if it is made into a supplement it must be very strong. But what exactly is Leptin? Is it really safe to take and what about the side effects? It almost sounds like it could be something to control your weight with. Leptin has been called the “fat” hormone, obesity hormone, and the “starvation” hormone. Scientists discovered this hormone in 1994 and it was touted as the the next miracle diet treatment. Is this hormone really all it is cracked up to be. But you have to ask yourself is this hormone supplement really safe to consume and will it do all the manufacturers say it will do.