Yup. Bleeding gums is a result of quitting smoking and it may also be a result of dehydration. Drink up and floss. If you don't floss already, this is probably why your gums are bleeding. In the wild, if we were still living as animals/apes like the earth designed us to be living, we'd be chewing into bone and hair and pure grains and grasses that would naturally toughen our gums for us. Because we do not eat these rough foods anymore, we need to brush our teeth and floss as well. Keep up with your dental hygiene from now on and you'll be good.