Why is a rise in temperature a good defense for the body?

• A. Fever only makes people feel worse
• B. Temperature has no impact on infections
• C. As temperature increases, the growth of organisms decreases, helping the body fight off infections
• D. It immediately destroys all pathogens

Answer: (C)

A rise in temperature helps the body defend itself by both limiting pathogen growth and boosting the immune response. Many bacteria and viruses reproduce best at normal body temperatures, so a fever slows their replication. At higher temperatures, immune cells—like white blood cells—often work more efficiently, improving processes such as signaling, attack on invaders, and cleanup of infected cells. This combined effect makes fever a helpful defense mechanism, not just a symptom.

Fever does impact infections, it isn’t true that it immediately destroys all pathogens, and while fever can be uncomfortable, it’s not accurate to say it only makes you feel worse.