Various studies place the average age of cataract surgery patients at between 70 and 73. More Info: The incidence of cataracts among Americans is relatively high.
Serotonin. Serotonin is an inhibitory neurotransmitter involved in the regulation of mood, anxiety, libido, compulsivity, headaches, aggression, body temperature, eating disorders, social anxiety, phobias, sleep, appetite, memory and learning, cardiovascular function, muscle contraction, and endocrine regulation.
Of all the parasympathetic cranial nerves, the vagus nerve, which contains about 80 percent of all parasympathetic fibers in the body, is the most important.ranial Nerve IX, the Glossopharyngeal Nerve. The glossopharyngeal nerve has a number of functions related to taste and eating. Parasympathetic fibers in this nerve control the parotid glands, the largest of the salivary glands. Salivation is necessary for eating, a peace time function.