Hi and welcome to the group,
Thal minors vary in hemoglobin level. Some have normal level above 11, but many have low hemoglobin levels in the 9-11 range. Boosting it is not easy and not always possible, but there are things you can do that will help and also will help your overall health. Supplements like vitamin E, B complex, folic acid and magnesium can help, but there is little that can be done to raise the Hb level. Some people benefit from supplements like wheatgrass and resveratrol. I would suggest reading more in the thal minor section of the boards and also the Diet, Nutrition and Supplements section.