Researchers are having success predicting the chances of someone developing Alzheimer's Disease. They make the prediction with a simple blood test. The new study out of Georgetown University Medical Center identified ten blood fats that signal when brain cells are starting to degenerate, an early sign of the memory-robbing disease. Researchers say the results of the study are promising. They were able to detect Alzheimer's long before patients had symptoms. Blood test results were able to detect early cognitive problems about ninety percent of the time. A new report also finds that the disease may claim the lives of around half a million Americans, making it nearly as deadly as heart disease or cancer. Right now, the only ways to detect Alzheimer's are pet scans and spinal taps. Both are expensive and sometimes risky. Researchers say more work needs to be done but the findings of the study are promising.