Happy, unstressed people get fewer colds.
Introverts get worse colds than extroverts.
Men who have just lost their wives have lowered white-cell responses. Although many physicians and medical researchers think it too early to claim that mental stress significantly suppresses the human immunological system and thus leads to more illness, one can see the pendulum start to swing away from the timehonored belief that mind and body are entirely separate entities. The foregoing studies and others like them are discussed in a recent survey of psychoimmunology by B. Dixon. Evolutionists can always find some sort of justification in Darwinian terms, and Dixon's is rather ingenious. If the human survived, his immunological system would immediately go into high gear to clean up the wounds and repel invading germs.