"Abnormal proteins" refers to proteins that are not functioning or structured in the usual or expected way. These proteins can cause problems in the body and are often associated with various diseases and disorders. Full definition
However, autoimmune disease, genetics, obesity, chronic pancreatitis, certain medications and abnormal protein deposits in the pancreas can play a major role in the development of the disease. (pets.webmd.com)
But this is the first study to demonstrate how they can directly influence abnormal protein growth in people who have subtle memory loss, researchers say. (health.com)