Editor’s Note: September is World Alzheimer’s Month DEAR MAYO CLINIC: I am part of what I hear called the Sandwich Generation. I have kids living at home and an aging parent in ill health. My mom is 83 and in an assisted living facility with physical and cognitive problems. She has been diagnosed with mild dementia due to Alzheimer’s disease. It makes me sad for my mom and also concerned for myself. Whenever I can’t…