Why we get brain freeze: What happens inside your head after a cold bite
This article explains the physiological phenomenon of 'brain freeze,' which occurs when cold substances touch the roof of the mouth. It describes how rapid constriction and dilation of blood vessels in response to cold triggers a pain signal through the trigeminal nerve.
Why it matters
Understanding common bodily reflexes helps demystify everyday physical sensations and highlights the complex interplay between the nervous system and temperature regulation.
New Delhi , UPDATED: Jun 1, 2026 08:30 IST Written By: Aryan Rai It is peak summer in India, temperatures are sitting well above 40°C across the north , and the one reliable escape is a cold treat; an ice cream, a kulfi , a glass of lemonade poured over crushed ice.
The article is a purely scientific explanation of a biological process with no political or social agenda.
Get smarter about the news
Sign up free for a feed built around what you actually care about, Dive Deeper research on any story, and the full text of every article.
Create free accountAlready have an account? Sign in