WASHINGTON, D.C. - If you want to know what's going on in someone's head, just open their mouth. Turns out, what comes out can say a lot about them.
Scientists say they're able to predict if a person will have Alzheimer's by testing their saliva, saying it's all based on chemical levels found in a person's spit.
Studies presented at the 2015 Alzheimer's Association International Conference say brain abnormalities can be detected as much as five years early.
Scientists say a swab of the mouth is far cheaper than doing brain scans and MRIs, which can be much more invasive for patients.
After all, saliva is easier to get, right? Maybe the spitting images doctors find will help them get ahead of this disease.