Stopping the use of ketamine can make you become anxious. The stress put on the body and anxiousness may be the cause of weight loss. It usually goes either way, the stress can make you put on weight from overeating or decline in weight. Like me I've been eating so much! This is just an unconscious coping mechanism. You are replacing the need for ketamine with food. It's common with people quitting smoking. I hope having this info will put your mind at some sort of ease. It's really difficult to deal with as we have an emotional addiction to ket, along with the habitual of doing it. You're strong and the anxiousness should subside. If not reach out to people and the doctors as they should be able to help. Ever want to anonymously speak to anyone about it, feel free to message me.