Hi Judy,
Although alpha thal minor also supposedly has no symptoms, we have been hearing from those who do observe some symptoms. Folic acid supplements are absolutely essential and unlike iron, may actually help the Hb level a bit, as folic acid is key to building red blood cells. Fava beans cannot be eaten as they can cause hemolytic crisis. There is a list of things to avoid in our post at
http://www.thalassemiapatientsandfriends.com/index.php?topic=3109.msg31087#msg31087Try avoiding any products that contain any beans, including soy, to see if his appetite improves. If it does, you will know that beans in general are causing some issues. Keep in mind that iron supplements may be a reason his stomach has bothered him as they will cause cramps and bloating.