Crystal healing is an alternative medical technique in which crystals and other stones are used to cure ailments and protect against disease. Proponents of this technique believe that crystals act as conduits for healing, allowing positive, healing energy to flow into the body making sure that the enegy field is cleaned and balanced out. History of this practice is ancient, dating back at least 6,000 years to the time of the ancient Sumerians of Mesopotamia. Ancient Egyptians are also referenced on such sites as being among the first people to have adorned themselves with crystals — including lapis lazuli, carnelian and turquoise — to ward off illness and negative energy. But despite the fact that crystal healing has seen an upsurge in popularity in recent years, this alternative treatment is not popular with most medical doctors and scientists, many of whom refer to crystal healing as a pseudoscience. Scientifically speaking, there is evidence of a CHI flow or life force energy in the body. Like chinese medicine speaks about meridians and energy channels. Recent scientific studies have shown that crystals and gems can be considerred living beings and can store electromagnetic energy. Nevertheless, healing crystals remain popular at health spas and at New Age health clinics, sometimes incorporated into related practices of massage and Reiki. The use of crystals in such environments may help induce relaxation and energetic balance.