The average age for cataract surgery is approximately 73 to 75 years old. But cataracts can occur in the 30s, 40s, and 50s. Of course the older the patient gets the more common the cataracts.
Two neurotransmitters seem to play a role in Alzheimer's Disease: acetylcholine and glutamate. Acetylcholine (ACh) activates muscles and helps with arousal, short-term memory, and learning. Individuals with AD have low levels of ACh.
Alzheimerâs disrupts processes vital to neurons and their networks, including communication, metabolism, and repair. At first, the disease typically destroys neurons and their connections in parts of the brain involved in memory, including the entorhinal cortex and the hippocampus. It later affects areas in the cerebral cortex responsible for language, reasoning, and social behavior.