A recent study shows that when we don’t get enough sleep, it actually alters our genes, and can lead to degenerative disorders. When we sleep, our bodies get to work repairing themselves, and if we don’t let them, it can damage our immune systems. Our cells have to replenish and replace themselves, and sleepy cells don’t like to work.
Lead researcher Colin Smith said, “There was quite a dramatic change in activity in many different kinds of genes … clearly sleep is critical to rebuilding the body and maintaining a functional state, all kinds of damage appears to occur—hinting at what may lead to ill health. If we can't actually replenish and replace new cells, then that's going to lead to degenerative diseases."