Fever, for example, is a calculated response to stop bacterial invaders in their tracks, so when we take fever-reducing drugs, we actually thwart our body's defense mechanism. The bacteria hate the heat, but our immune cells are resilient and continue to replicate even during high fevers. In one study, people with colds took either acetaminophen (Tylenol) or a sugar pill. Those who took the sugar pill had a significantly higher antibody response and much less nasal stuffiness.
Find out more about this book:You: Staying Young: The Owner's Manual for Extending Your Warranty