Scientists, and to a small degree, the public are familiar with the damage to the brain caused by drug addiction. Meaning drugs introduced to the body from the outside.
Research has discovered that any addiction causes the same brain damage that drug addiction causes. Our brain is a natural pharmacy complete with computer sensors all through the body.
When a chemical is deficient, the brain sends a message to the pharmacist, who then sends the appropriate dosage to the region of the body in need. Recent research has taught us that many of the drugs on the outside of the body are also produced on the inside.