The Decline of Your Brain’s Chemical Messengers VI

Old people often suffer from a deficiency of serotonin, an important inhibitory neurotransmitter that initiates sleep. Inhibitory neurotransmitters reduce neuron activity, in contrast to the above-mentioned neurotransmitters, which usually increase activity. Sleep disorders are common in old age, including difficulties in falling and staying asleep. Irritability and bedtime flights of ideas may occur. Tryptophan, an […]

Read more The Decline of Your Brain’s Chemical Messengers VI

The Decline of Your Brain’s Chemical Messengers V

A very dramatic story about the effects of L-Dopa on twenty patients with severe Parkinson’s disease is contained in Oliver W. Sack’s book Awakenings. Between 1916 and 1927, nearly five million people fell victim to encephalitis lethargica (sleeping sickness). A third of those affected died either in a coma or in a profound state of […]

Read more The Decline of Your Brain’s Chemical Messengers V