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Sleep is essential – researchers are trying to work out why
A typical person spends more than 20 years in a state of dreamy semi-consciousness. But surprisingly little is known about why we need this down time.
Organelles called mitochondria sense this nutrient deficiency and signal cellular enzymes to make ROS to stimulate the proliferation of cells in the gut that are better at absorption, Rogulja says. In a 2023 study, researchers in Brazil found that fruit flies that were sleep deprived showed overexpression mostly of genes that affected metabolism, glucose, triglyceride and levels of the hormone dopamine 6. “We asked them to remember word pairs during the day and then they slept,” says co-author Phyllis Zee, a neurologist and sleep-medicine specialist at the Feinberg School of Medicine in Chicago, Illinois.
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