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.
You can see the pathways connecting tryptophan, 5-HTP, serotonin, and melatonin in the diagram below. Serotonin is a neurotransmitter known as the âhappy moleculeâ for its role in supporting a positive mood. This major neurotransmitter also regulates learning, memory, appetite regulation, and sleep.