
About this episode
We usually sneeze to protect ourselves from irritants such as pollen, dust, or chemicals. But there are some people who consistently sneeze when they look at the sun. In fact, this affects from 10 to 35% of us when we move from being in the shade to bright light, according to PBS.org.
If it happens to you, perhaps you’ve been wondering if it’s an allergy to sunlight, but actually it isn’t. The reaction triggered by sudden exposure to light is called the photic sneeze reflex. It is a congenital physiological anomaly that’s pretty common and totally harmless.
Why does this reaction occur? What happens in the body when we sneeze? Should you suppress a sneeze? In under 3 minutes, we answer your questions!
To listen to the last episodes, you can click here:
How long do I have to wait to swim after eating?
What are the world's least safe travel destinations?
Why do we get travel sick?
A Bababam Originals podcast written and realised by Joseph Chance.
First broadcast: 4/6/2023
Learn more about your ad choices. Visit megaphone.fm/adchoices
Get every episode summarized
Each time Do you really know? publishes, we email you a written briefing from the transcript — the topics, who appeared, and any specific claims, with the ad reads skipped.
Email me new episodesFree for 3 shows. No card needed.
No transcript yet
This episode has not been transcribed. Request it and it moves to the front of the queue.
More episodes
More from Do you really know?

Could insects replace meat?
Do you really know?
Sep 13, 20264:45completed

Is nostalgia good or bad for us?
Do you really know?
Sep 13, 20267:09completed

Why is the celibacy movement attracting young people?
Do you really know?
Sep 13, 20265:22completed

Could using lube help you get more pleasure from sex?
Do you really know?
Sep 12, 20265:31completed