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What causes sleepiness

Female  38 years old 2018-06-03
I used to be very energetic, but now I am very sleepy. What could cause it?

1 Answer These messages are for reference only

  • BY Penelope Judson 2018-06-03
    Drowsiness is related to abnormal neuron function. Brain cells, these neurons are located in the hypothalamus, make a protein called orexin, they are necessary to maintain a normal state of awake. These neurons are relatively inactive at night. When they fail, they can cause drowsiness and make people unable to stay awake.
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