Sleep deprivation alters the structure of DNA inside immune cells and increases the number of immune cells, which causes them to overreact and spark inflammation. The study found catching up on sleep does not reverse this effect.
Dementia risk was 69% higher in older adults who slept for more than 8 hours per night, and 2 times higher for those who went to bed before 9 pm.
Middle-aged people who experience at least one nightmare a week are four times more likely to experience cognitive decline during the following decade. Older adults who experience weekly nightmares are twice as likely to develop dementia. The association is much stronger for men than women.
Rather than being simply a brain disease, researchers propose Alzheimer's disease could be a disorder of the immune system within the brain.
Using zebrafish, researchers investigated the timing and genetic programming of macrophages that help repair and regenerate the sensory organs within the fish. The findings could help pave the way for regenerative treatments for spinal cord injuries, hearing loss, and heart disorders in humans.
NG2-glia, a newly discovered type of brain cell that can renew itself is regulated by circadian rhythms. The findings shed new light on how the body's circadian clock can promote healing following a traumatic brain injury.
Drinking four or more cups of black, green, or oolong tea daily was associated with a 17% lower risk of developing Type 2 diabetes.
Researchers discovered decreased function in a protein critical for synaptic function in those with Huntington's disease.
Those working in production occupations, especially those exposed to volatile organic compounds, metals, combustion pollutants, and particulate matter have a higher risk of developing ALS.
Getting the recommended amount of sleep, daily exercise, eating a healthy diet, and resisting alcohol and tobacco are among the seven identified lifestyle alterations those with diabetes should take to decrease their risk of developing dementia.
Researchers reveal significant differences in gut bacteria in patients with multiple sclerosis compared to those without the autoimmune disease. The study also uncovered novel mechanisms by which the bacteria may influence the disease.