Loose and saggy skin around the tummy are extremely difficult to treat generally.
If there is lots of redundant skin overhanging in the abdomen then tummy tuck may be the solution but if the skin is more crumped with lines, then thermage CPT may be a possible treatment.
Either way, its always good to come in and have the doctor have a look and give you the appropriate advise as its very hard to tell what loose and saggy means to you.
Hope that helps. Thks.