How is human longevity influenced by our mindsets on aging, diet, exercise and stress? Inspired by research on the placebo effect, Alia Crum (@AliaCrum), an assistant professor of psychology at Stanford University, investigates the role mindset plays in health and lifestyle choices. She is trying understand how mindsets can have a positive impact on the way the body heals and whether they can be influenced to bring about physical and psychological well-being.