People with narcolepsy have too few brain cells that produce

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Narcolepsy is caused by a lack of orexin-producing neurons in the brain. Orexin is a neurotransmitter that helps to regulate wakefulness and sleep, so the lack of it can lead to excessive daytime sleepiness and symptoms like cataplexy (sudden loss of muscle control). Melatonin is a hormone produced by the pineal gland that helps to regulate sleep-wake cycles, but a deficiency in melatonin production is not known to be linked to narcolepsy. Lipochrome is a pigment found in certain cells and tissues in the body, but it is not known to be involved in narcolepsy. Rhodopsin is a protein found in the retina of the eye that helps with vision in low light conditions, but it is not known to be linked to narcolepsy.

People with Narcolepsy Have Too Few Brain Cells That Produce