I can't imagine that I have receding gums and I have not reach 40 yet! A few of my teeth are very sensitive now due to receding gums. Hubby told me that it is due to aggressive brushing. Ya! Maybe I brushed too hard coz I lazy to floss my teeth and sometimes only brush my teeth once a day. Since I can afford to do any dental implnat like those at dental implants Mexico, I better be gentle with my teeth and find time to brush my teeth twice a day. ;) I really hope the gums will grow back to cover the exposed roots.