Alzheimer’s diagnoses are set to surge. In fact, by the year 2025, the number of people with Alzheimer's is predicted to jump 40-percent. But experts say you can spot Alzheimer’s years before you’re officially diagnosed by being on the lookout for these telltale behavior changes:

  • First: You have a hard time biting into an apple. A study found that people who had trouble chewing hard foods like apples, because they have few or no teeth were at a much higher risk of mental decline. That’s because when chewing is tough, you chew less, which reduces blood flow to your brain.

  • Another dementia red flag: Your walking pace has slowed way down. Researchers used motion-sensor technology to analyze the walking patterns of people. And discovered that slow walkers had smaller brain volumes, which often happens in people with dementia.

  • Then, are you overweight? You could be on the Alzheimer’s fast-track. Researchers analyzed the B-M-Is of 8-thousand people spanning back 30 years, and found that those with dementia were 70-percent more likely to have been overweight or obese as young adults. So, hit the gym. That’s because exercise is a scientifically proven dementia-fighter. Experts explain that aerobic activity beefs up the part of our brain responsible for memory. It also prevents the build-up of plaque in our brains – which has been linked to Alzheimer’s.

  • And the final early warning sign of dementia: Depression. Researchers analyzed medical records of 13-thousand people and found that those with late-life depression had double the odds of developing Alzheimer’s. And those with mid-life and late-life depression had more than triple the risk of developing dementia. So, if you’re feeling down – lace up your sneakers, and take a half hour walk. Studies show that exercise floods your body with feel-good hormones.