Wed Dec 17 02:30:00 UTC 2025: News Article:
Why Does Spicy Food Make Your Nose Run?
NEW DELHI, December 17, 2025 – The popular science newsletter, “Science For All” published in today’s edition of The Hindu’s e-Paper, explains the science behind why spicy food containing chillies causes a runny nose.
According to S.P. Kirtik Raj, an intern with The Hindu, the phenomenon is due to a process called neurogenic inflammation. A substance called capsaicin, found in chillies, binds to nerve receptors in the mouth and nose that normally react to heat. This creates a false alarm, causing the nerves to release signalling molecules which relax blood vessels and stimulate mucus production. This watery mucus is intended to dilute and wash away the perceived irritant.
Raj further explains that because capsaicin is oily, water is ineffective in relieving the sensation. Milk, containing the protein casein, or sugar, are more effective as they interact with capsaicin and help wash it away or reduce its ability to cling to nerve receptors.
The full explanation is available in today’s “Science For All” newsletter, along with other science articles presented in an accessible and engaging format.
First Piper 