Your Appendix Isn't Useless, After All

The appendix, often dismissed as a useless organ, has evolved multiple times in mammals, suggesting an evolutionary advantage. Research indicates it plays a role in immunity, housing immune cells and beneficial gut bacteria. This may help replenish gut flora after diarrhea. Studies show that removing the appendix could increase the risk of severe infections, raising questions about unnecessary surgeries. While appendicitis is dangerous, the appendix may have more benefits than previously thought.

What did researchers conclude about the appendix after studying its evolution in mammals?

• It is only present in humans.

• It has evolved more times than it has been lost, indicating an evolutionary advantage.

• It is a completely useless organ.

• It is primarily responsible for digestion.

What is one of the key roles of the appendix in mammals?

• It is involved in immunity by housing immune cells.

• It regulates body temperature.

• It produces digestive enzymes.

• It stores excess fat.

How does the appendix contribute to gut health during a crisis?

• By increasing blood flow to the intestines.

• By producing more stomach acid.

• By releasing emergency rations of good gut bacteria.

• By absorbing excess water.

What did a 2015 study find about patients without an appendix?

• They are less likely to suffer from infections.

• They have a higher risk of developing severe infections from certain bacteria.

• They are immune to appendicitis.

• They have improved digestion.

Why might the removal of the appendix be reconsidered according to recent findings?

• It helps in blood circulation.

• It is necessary for breathing.

• It can lead to increased risk of infections.

• It is a major source of energy.