 [ Symptoms ] does medicare cover periodic phlebotomy for a haemochromotosis sufferer [ Disease ] leptin actually decreases appetite and as far as i know it is not something that is given to increase it for more on hunger hormones and how they work see this article there are appetite stimulates that doctors can prescribe but before you would even consider this you should get help on diet and activity i recommend seeing a registered dietitian who can examine your eating habits and history and provide tailored advice on when how and what to eat to find one in your area go to eatright org this article describes some healthy ways to gain weight good luck