Brain and Immune System—Two Competing Realms

The brain and immune system require a lot of energy, and they are selfish because they claim this energy for themselves in case of danger, without asking anyone else. They have their own factors for this selfish allocation of energy, which are released when needed. In short-term events, the brain and immune system help each other. In long-term events, they become selfish and shut down the other uninvolved competitor. Both have their own memory, which ultimately serves to save energy. Once the energy expenditure for dangerous situations is completed, so-called peaceful interludes, the absorbed energy is used for growth, repair, and reproduction.