1. Brain Fog - having trouble focusing on things you were previously good at or having a poor memory.2. Digestive Problems - such as Irritable Bowel Syndrome, diarrhea, heartburn and indigestion, as well as stomach acids.3. Fatigue – both acute and chronic, feeling rundown all the time. 4. Chronic Mental Health Issues - which can include (but are not limited to) depression, anxiety, and bipolar disorder.5. Migraines or Headaches (acute and chronic) - This is normally one of the first symptoms people start to associate with heavy metal poisoning.6. Nausea and stomach cramps often ignored because they’re attributed to something else, like food poisoning or a painful menstrual cycle with women.7. Blurry Vision, or an inability to see as well as you had been before, either at a close or at a faraway distance.8. Numbness, tingling, and paralysis in your arms and legs. Those are known as nervous system disorders.