Intestinal metaplasia is considered as a precancerous lesion and may turn into stomac cancer. Intestinal metaplasia is considered as reversible if the factors that provoked it are removed. Eradication of Helicobacter pilory combined with Vitamin C can reverse the intestinal metaplasion of the gastric mucose.
Ozone therapy is a form of alternative medicine treatment that purports to increase the amount of oxygen to the body through the introduction of ozone into the body.
Particle therapy is a form of external beam radiotherapy using beams of energetic protons, neutrons, or positive ions for cancer treatment. The most common type of particle therapy as of 2012 is proton therapy. Although a photon, used in x-ray or gamma ray therapy, can also be considered a particle, photon therapy is not considered here. Additionally, electron therapy is generally put into its own category.