No, it is not harmful to eliminate sweating in your underarms for a couple of reasons. First, as mentioned above, many people have overactive sweat glands that produce more sweat than is necessary to cool the body. Second, the body has over four million sweat glands! Only 2% of those are located in the underarm region. Eliminating this 2% does not adversely affect your body’s ability to cool itself. No, you will not have any additional sweating anywhere else. When sweat glands are removed from the underarms, you simply stop sweating in that area. So don’t worry, your body won’t start sweating more in other areas to “compensate.”