GABRIELLE GIFFORDS’S remarkable recovery from a bullet to her head has provided a heartening respite from a national calamity. Representative Giffords’s husband describes her as a “fighter,” and no doubt she is one. Whether her recovery has anything to do with a fighting spirit, however, is another matter entirely.

The idea that an individual has power over his health has a long history in American popular culture. The “mind cure” movements of the 1800s were based on the premise that we can control our well-being. In the middle of that century, Phineas Quimby, a philosopher and healer, popularized the view that illness was the product of mistaken beliefs, that it was possible to cure yourself by correcting your thoughts. Fifty years later, the New Thought movement, which the psychologist and philosopher William James called “the religion of the healthy minded,” expressed a very similar view: by focusing on positive thoughts and avoiding negative ones, people could banish illness.

The idea that people can control their own health has persisted through Norman Vincent Peale’s “Power of Positive Thinking,” in 1952, to a popular book today, “The Secret,” by Rhonda Byrne, which teaches that to achieve good health all we have to do is to direct our requests to the universe.

It’s true that in some respects we do have control over our health. By exercising, eating nutritious foods and not smoking, we reduce our risk of heart disease and cancer. But the belief that a fighting spirit helps us to recover from injury or illness goes beyond healthful behavior. It reflects the persistent view that personality or a way of thinking can raise or reduce the likelihood of illness.