Infection can cause an older person to become severely confused. It is often due to illnesses that are not related to the brain. They can be caused by brain diseases such as Alzheimer disease, which doctors believe is associated with plaques and tangles forming in the brain.ĭelirium is sudden confusion that leads to changes in thinking and behavior. These changes are not always related to the effects on your ability to think.ĭementia and severe memory loss are not a normal part of aging. Some people have many changes in their nerves and brain tissue. These changes are not the same in everyone. Slowing of thought, memory, and thinking is a normal part of aging. This leads to problems with movement and safety and makes it more likely to suffer falls. You might have reduced or lost reflexes or sensation.
A fatty brown pigment ( lipofuscin) can also build up in nerve tissue.īreakdown of nerves can affect your senses. 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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