![]() This can cause abnormal changes in the brain called plaques and tangles to form. Waste products or other chemicals such as beta amyloid can collect in the brain tissue as nerve cells break down. Nerve cells may begin to pass messages more slowly than in the past. Your brain and spinal cord lose nerve cells and weight (atrophy). Nerves extend out from the spinal cord to every part of your body.ĪGING CHANGES AND THEIR EFFECTS ON THE NERVOUS SYSTEMĪs you age, your brain and nervous system go through natural changes. The spinal cord is the bundle of nerves that runs from your brain down the center of your back. Nerves are the pathways that carry signals to and from your brain and the rest of your body. They also help control the organs such as your heart and bowels. The brain and nervous system are your body's central control center.
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