For over 40,000 years the Native American Indians have used a combination of religion, spirituality, rituals, and herbal medicines. Native Americans did not go a doctor to get medications prescribed to them they went to a medicine man. The treatment usually took weeks or longer to see effects. Some of the herbal remedies that were used by Native American Indian medicine men included teas, tinctures, and salves. An example for pain a medicine man would use the bark from a willow tree, which contains acetylsalicylic acid (what is known as aspirin). Most Native American Indian medicine men where driven underground or the practice was lost due to their practice being banned in some parts of the United States. Native American Indians have one of the poorest health systems in the United States. Presently native American Indians are able to get traditional medications by going to health centers to receive adequate care for common diseases that they have been diagnosed. In doing this they are able to get better health care than in the past, and prolong their lives. Some Native American Indian tribes still use herbal remedies, and rituals. Many other people are now using herbal remedies as an alternative for of medicine. The Indian believe that by purifying the body of all its toxins that they will live longer lives. Some people who have used the Native American Indian form of medicine swear that they have been cured of what may have yelled them. But the quality of their child births has been improved by the ability to receive prenatal vitamins.