The modern scientific explanation is that needling the points stimulates the nervous system to release chemicals in the muscles, spinal cord and brain. These chemicals either change the experience of pain, or they trigger the release of other chemicals and hormones, influencing the body's internal regulating system. The improved energy and biochemical balance produced by acupuncture results in stimulating the body's natural healing abilities, and in promoting physical and emotional well-being. While acupuncture is often associated with pain control, in the hands of a well-trained practitioner it has much broader applications. Urinary, menstrual and reproductive problems.
Acupuncture needles are very thin and solid and are made of stainless steel.
People experience acupuncture needling differently. Most patients experience some heaviness, tingling or electric sensation around the needle or up and down the energy meridian upon insertion. If there is any discomfort, it is mild. Once the needles are in place, there is little sensation felt, besides relaxation. Ideally, at the first signs of the slightest distress or illness, just when you feel that head cold coming on, or notice that twinge in your shoulder.