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.
In a third study, researchers examined the effects of lithium on glutamate-induced excitotoxicity, which is neuronal death caused by excessive amounts of glutamate, the brainâs most prevalent neurotransmitter. 4 This phenomenon has been strongly implicated in the origin of a variety of neurodegenerative diseases, including dementia.