科学｜太陽を見るとくしゃみが出る理由 / Science | The Reason Why Looking at the Sun Makes You Sneeze

Summary

The phenomenon of sneezing when looking up at the sun is medically referred to as “photic sneeze reflex” or “ACHOO syndrome.”

This is a normal reflex that occurs when moving from a dark place to a bright one, as the eyes react to the strong light. It is thought to be a remnant from our ancestors who lived in caves and is explained as the body’s response to sunlight.

Dialogue

This dialogue is fictional and based on the article.

Chako: Hey, Log, did you know that some people sneeze when they look at the sun?
Log: Yeah, that’s a phenomenon called “photic sneeze reflex.” It happens when your eyes respond to bright light when you suddenly move to a well-lit area.
Chako: Wow, why does that happen?
Log: Well, it’s actually thought to be a remnant from the time when our ancestors lived in caves. When they suddenly emerged from a dark place into bright light, their bodies would react.
Navi: Just to add, this reaction is recognized medically as a normal reflex. The body’s sensitivity to light is believed to have developed through the process of evolution.

Admin’s Note

This article provides a detailed explanation of why people sneeze when they look at the sun. I was particularly impressed by the introduction of the phenomenon known as the “photic sneeze reflex” from a medical perspective. Through the conversation between Chako and Log, I was reminded that even the things we experience casually in our daily lives can have profound reasons behind them. I feel it’s very important to explain everyday questions from a scientific viewpoint. I hope to see more information that deepens our understanding of familiar phenomena in the future.