i have heard interviews with the cast of Survivor, the tv series that puts people in remote locations and has them fend for themselves, and a handful of the skinny ones that i heard mentioned how they lost their sexual desire as the show progressed. one of them who was fat though said that he didn't. this might further show that starvation is linked to a loss of sexual desire. but whether you need to be starving or not is the question. maybe a lowered caloric intake that is maintained can be as effective in stopping sexual desire. obviously starvation is not maintainable but a lower calorie intake is.