If the whole being could simultaneously advance in its progressive transformation, keeping pace with the inner march of the universe, there would be no illness, there would be no death. But it would have to be literally the whole being integrally from the highest planes, where it is more plastic and yields in the required measure to transforming forces, down to the most material, which is by nature rigid, stationary, refractory to any rapid remoulding change.
There are certain regions which offer a much stronger resistance than others to the action of the Yogic forces, and the illnesses affecting them are harder to cure. They are those parts that belong to the most material layers of the being, and the illnesses that pertain to them, as, for instance, skin diseases or bad teeth. Sri Aurobindo spoke once of a Yogi who, still enjoying robust health and a magnificent physique, had been living for nearly a century on the banks of the Narmada. Offered by a disciple medicine for a toothache, he observed, in refusing, that one tooth had given him trouble for the last two hundred years. This Yogi had secured so much control over material nature as to live two hundred years, but in all that time he had not been able to conquer a toothache.
16 June 1929
About Savitri | B1C2-10 Condition of the World (p.18)