laura chamberlain. thank you for being with us. >>> in similar medical reports today, researchers are founding many of the 9/11 first responders, who were diagnosed with ptsd, or major depression, after the attacks are already reporting signs of early alzheimer's and dementia. experts call the findings chicagoing, considering the shocking, considering the average age of the responders was only 53. >>> a new study shows just a little exercise can help prevent senior citizens from developing memory problems. researchers find sedentary seniors have a greater risk of dementia than those who stay active. researchers believe a simple brink walk daily, gardening or ballroom dancing is extremely beneficial. >> that the that's what we were just talk b. just have to try a soccer player makes a athletic move. >> check it out. even lammeds on his feet. stuck the -- lands on his feet. stuck the land. my son has meningitis b. but how did we end up here? his mom thought he had the flu and that he was covered by the me