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.
Alzheimer's Disease. Alzheimer's disease is an irreversible and progressive disorder that damages and destroys brain cells, inducing memory loss and negatively impacting cognitive abilities, such as thinking skills and reasoning. Alzheimer's disease is also the leading cause of dementia, accounting for 50% to 80% of cases. Although there is no current cure for Alzheimer's, much research has gone in to finding treatments that can slow the worsening symptoms of dementia and improve quality of life for those who suffer from the disorder.