The third cause of receding gums can be the most common cause, and it is:
Hereditary and dietary issues
In some cases hereditary issues can be the cause of thin and weak gum tissue, making a person more susceptible to gum recession. However just because a problem is hereditary does not mean it cannot be treated. There are certain dietary choices that can be made to give the gums extra strength and a top quality oral hygiene routine will give the body the best possible chance of full health despite congenital weakness.
Even for those without hereditary gum problems there are key nutrients that must be sufficiently present in the diet if the gums and teeth are to remain strong. Anyone suffering from receding gums should be aware of these key nutrients and take action to incorporate them into their diet and oral hygiene routine.
NOTE: Smoking, dipping and chewing tobacco are known to weaken the gums and, fortunately, either of these issues can be removed simply by making the right personal choice. Additionally, if you have a tongue or lip piercing the rubbing of the jewelry on your gums and teeth will invariably wear them down. This is the case regardless of the type of jewelry worn, so you will have to remove it permanently to prevent further damage.
Remember, your health is more important than your appearance!