Outline A placebo is something that has no real medicine in it. It called "sugar pills" too. Dr. Beecher was worried that an operation of a soldier without morphine. He had been in a battle and was hurt very badly, but Dr. Beecher had no more morphine because it is a very powerful drug. A nurse injected the soldier with a saline solution and she told him that she was giving morphine. However, he relaxed immediately and said he felt very little pain. Doctor's clothes have similar effect to placebo. Wearing a white coat may increase the confidence of even new doctor. On the other hand, it could raise their blood pressure and cause them to prescribe unnecessary medications. The placebo effect is not always a positive effect. Scientists called it "nocebo effects". Most medicines have side effects, it means negative effects. Although placebo are not actual medicine, they also can have side effects. Impression I've already know about a placeb