Here is something most people never think about: the way you handle stress — and how good you are at keeping promises to yourself — may actually affect your chances of getting Alzheimer's disease. A new research review published in Frontiers in Neurology looked at decades of studies on personality and brain health. The findings are eye-opening. And the good news? They point to things you can actually change.

A recent study followed U.S. adolescents into adulthood and discovered some important lessons for all of us. The study found that teens who felt more connected to their families were much more likely to report strong, satisfying social relationships in their 30s and 40s. This study focuses on adolescent experiences, but its message is also important to older adults and those who care for them.