from hubpages: Oregano is an aromatic herb that belongs to the mint family, it can grow to about two feet in height.
It is native to the Mediterranean region but is cultivated worldwide. The leaves as well as the volatile oil of oregano are used medicinally, but must be carefully distinguished as they are quite different.
There is a common oregano that is use for cooking and the oregano that is use to make oil. Origanum Marjoram is the common oregano used for cooking. Origanum Vulgare is the wild oregano used for making oil.
Oil of Oregano is a highly potent purifier that provides many benefits for human health. The two important compounds that are responsible for the many health benefits of oregano are carvacrol and thymol.
Studies have shown that both of these compounds can inhibit the growth of bacteria, virus and fungi which is the main causes of many illnesses in humans.