Toxins areeverywhere. They are in everything we touch,breathe, eat, smell and drink. They cause problems so gradually we don't usually notice. They build up gradually and the wonderful spouse becomes more negative and harder to live with. The child with so much promise begins to struggle in school. Interacting socially may become more difficult, with excess shyness or anger and irritability. See ways toxins effect the brain here. A person may struggle toremember or have foggy thinking. Heavy metals and toxins can damage the immune system. Toxic chemicals can damage the heart and circulatory system. Toxins can even make you fat.