The nocebo effect is the opposite of the placebo effect we covered in episode 36, it is when bad things happen when you take a sugar pill because you expect bad things to happen. This is actually surprisingly common and you can even see severe side effects like respiratory depression arising as a result of the nocebo effect.
Overall, in considering both the nocebo and the placebo effect the most important thing to keep in mind is that your psychology has power. It is important to remember that your mindset and your beliefs are going to have measurable impacts on your physiology and your health.