Yin And Yang -- Balance Could Play Key Role In Progression Of Alzheimer's Disease

Researchers at Rensselaer Polytechnic Institute are challenging current thinking on the causes and prevention of Alzheimer's disease, offering a new hypothesis that could be the key to preventing this form of dementia. The researchers have found that a specific imbalance between two peptides may be the cause of the fatal neurological disease that affects more than five million people in the United States.

"We have found that two peptides, AB42 and AB40, must be in balance for normal function," said Chunyu Wang, lead researcher and assistant professor of biology at Rensselaer. "They are like the Yin and Yang in Taiji, an ancient Chinese philosophy. When the peptides are produced in the correct proportions, the brain is healthy; but when that delicate balance is changed, pathological changes will occur in the brain and the person's memories become hazy, leading to eventual dementia."

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