TED-Ed: The surprising reason you feel awful when you're sick - Marco A. Sotomayor

The video explores the symptoms of the flu, questioning whether they are caused by the virus or the body's immune response. It explains how the immune system reacts to pathogens, leading to symptoms like fever and fatigue, which may aid in recovery. The video also discusses the emotional effects of illness and the role of cytokines. It concludes with a look at autoimmune diseases and the evolution of the immune system.

What are some common symptoms experienced when you have the flu?

How does the immune system respond to an infection like the flu virus?

What role do cytokines play in the immune response?

Why do we experience symptoms such as fever and aches during an illness?

What are some theories regarding the purpose of unpleasant symptoms during illness?

How can dehydration affect the transmission of pathogens?

What is the relationship between the immune response and emotional changes during illness?