Michael Greger

When I was a child, doctors sent my grandmother home in a wheelchair to die. Diagnosed with end-stage heart disease, she already had so much scar tissue from bypass operations that the surgeons had essentially run out of plumbing. There was nothing more to do, they said; her life was over at 65.

While positive mental states may be associated with less stress and more resilience to infection, positive well-being might also be accompanied by a healthy lifestyle.