Researchers at the University of Virginia said light therapy may be a new tool to help manage early symptoms of Alzheimer鈥檚 disease.
Doctors at the university stumbled upon the discovery while analyzing sleep patterns in mice with the memory-loss illness. The findings suggest that enhanced light sensitivity may contribute to 鈥渟undowning鈥� 鈥� the worsening of symptoms late in the day 鈥� and could possibly spur sleep disruptions that are thought to speed up the disease in patients.
鈥淭hey will often be sleepier during the day, and they will have a harder time staying asleep at night,鈥� said Dr. Heather Ferris, an assistant professor at UVA, who led the research team.
鈥淪ometimes in the afternoon and early evening, they get really frustrated and are less able to problem-solve,” Ferris said. “These symptoms build over time as the disease gets worse.鈥�
These erratic sleep patterns disrupt the natural biological clock, also called circadian rhythm, and curb the body鈥檚 ability to get rid of proteins that are thought to form harmful tangles in the brains of Alzheimer鈥檚 patients.
A possible solution: Light therapy, a treatment that uses artificial light in various wavelengths and across different times to improve patient health.
鈥淚t made a lot of sense all of a sudden,鈥� Ferris said. 鈥淭his was exciting to us because it opens up so many doors for therapeutics. It鈥檚 easy, economical and safe. We can get to therapy much faster than a pill.鈥�
