
Here’s another reason to keep your cholesterol under control: New research suggests that LDL, or “bad,” cholesterol may play a role in the development of early-onset Alzheimer’s. A rare form of the disease that occurs before the age of 65, early-onset Alzheimer’s has previously been linked to a gene mutation involved in how the body processes fats and cholesterol. But that mutation only accounts for a small percentage of cases, the scientists noted. Their new research suggests that “LDL cholesterol levels [also] play a causal role in the pathogenesis of Alzheimer’s disease,” said lead researcher Dr. Thomas Wingo. He’s an assistant professor of neurology at Emory University School of Medicine in Atlanta. “The big question is whether there is a causal link between cholesterol levels in the blood and Alzheimer’s disease risk,” Wingo said. “The existing data is murky on this point. Our current work is focused on testing whether there is a causal link.” Most early-onset Alzheimer’s disease is not explained by known gene mutations, Wingo added. The APOE genetic mutation, called APOE E4, raises levels of LDL cholesterol. High levels of this type of cholesterol can clog arteries, increasing the risk for heart attack and stroke. Other gene mutations associated with early-onset Alzheimer’s are called APP, PSEN1 and PSEN2. But all of these genetic variants are only linked to about 10% of all… read on >