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.
Both Alzheimerâs disease and Parkinsonâs disease are diseases of the brain. Both may cause forgetfulness. However, the similarities end there. In fact, researchers believe that even the memory disorder that results from Parkinsonâs is distinct from the memory disorder that Alzheimerâs causes.