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.
Some forms of dementia are reversible, some are not. Alzheimer disease is, in part, caused by the development of things called neurofibrillary tangles in brain cells that edge out what is otherwise supposed to be there. There is a genetic component to Alzheimer disease as well.lzheimer disease is, in part, caused by the development of things called neurofibrillary tangles in brain cells that edge out what is otherwise supposed to be there. There is a genetic component to Alzheimer disease as well.