Health anxiety leads us to assume all or most symptoms or bodily sensations are indicative of a serious disease. However, our bodies are "noisy." Learn about the common sources of body noise so you can reshape your beliefs around this and refrain from automatically assuming you have a serious disease.
People with severe health anxiety hold dysfunctional or maladaptive beliefs about health and illness. Dysfunctional beliefs develop early in life and are strengthened through reinforcement. Dysfunctional beliefs enter one into a cycle of unhelpful thoughts and behaviors that worsens health anxiety. Cognitive behavioral therapy aims to interrupt this cycle by modifying maladaptive beliefs, thinking errors, and safety behaviors.
With health anxiety, we have unhelpful or inaccurate core beliefs about health and illness. These beliefs lead us to process information in a biased way. We tend to seek out "evidence" of our belief (e.g. that serious disease is everywhere) and we ignore or dismiss evidence to the contrary. It can be helpful to use a CBT technique and track your thoughts and assumptions in a thought record so that you can identify these patterns.