Stuff You Should Know - Short Stuff: Feed A Cold, Starve a Fever
The podcast explores the origins and validity of the saying 'feed a cold, starve a fever.' Historically, this advice dates back to the 16th century and was based on the belief that eating could worsen a fever. However, modern medical consensus disagrees with this notion. The hosts discuss a study from the Netherlands that found eating can boost immune response by increasing interferon gamma levels, which are crucial for fighting infections. Conversely, fasting increased interleukin-4, another immune component, but it's unclear which immune response is needed during illness. Therefore, the advice is to eat if you feel hungry, as both nutrients and hydration are essential for recovery. The podcast emphasizes that staying hydrated is crucial, and consuming calories, even in liquid form, is beneficial when sick.
Key Points:
- The saying 'feed a cold, starve a fever' is outdated and not supported by modern medicine.
- Eating when hungry during illness can boost immune response, particularly increasing interferon gamma levels.
- Fasting can increase interleukin-4, but it's uncertain which immune response is needed, so eating is safer.
- Staying hydrated is crucial during illness, and consuming calories in any form is beneficial.
- Medical advice suggests eating if you feel hungry to support both types of immune responses.