Press your tongue flat against the roof of your mouth. The warmth transfers heat directly to the palate, and the pain typically fades within 30 seconds. Brain freeze feels alarming in the moment, but it’s harmless and short-lived, rarely lasting more than a couple of minutes even if you do nothing at all.
Why Brain Freeze Happens
When something very cold hits the roof of your mouth, the rapid temperature drop causes blood vessels in the palate to constrict quickly, then dilate. This sudden shift triggers pain signals through a nerve cluster located behind your nose and palate, which relays the sensation to your brain. Your brain interprets the signal as a sharp, intense headache, usually felt in the forehead or temples even though the cold stimulus is in your mouth.
Research using ultrasound imaging has shown that drinking ice water can increase blood flow velocity in arteries supplying the brain. That rapid vascular change appears to be the core driver of the pain. Once blood flow normalizes, the headache disappears on its own.
How to Stop It Immediately
The fastest fix is rewarming the roof of your mouth. You have a few options, and they all work by interrupting the cold signal at its source:
- Press your tongue to the roof of your mouth. Flatten it firmly against the palate and hold it there. Your tongue is warm enough to counteract the temperature drop that triggered the pain.
- Drink something warm. A sip of room-temperature or warm water works quickly. Researchers have reversed brain freeze in study participants simply by giving them warm water after inducing the headache with ice water.
- Cup your hands over your mouth and nose and breathe. This traps warm exhaled air and directs it toward the palate, raising the temperature more gradually.
If you don’t do anything, the pain still resolves on its own. Most episodes last somewhere between 20 seconds and two minutes. It just feels a lot longer when it’s happening.
How to Prevent It in the First Place
Brain freeze is almost entirely preventable by changing how you eat and drink cold things. The trigger is a sudden, large drop in palate temperature, so anything that slows or reduces that drop will help.
Eat cold foods slowly. When you take smaller bites of ice cream or sorbet and let them warm slightly on your tongue before swallowing, much less cold material contacts the roof of your mouth at once. The same goes for frozen drinks and slushies: sip rather than gulp. Aiming food toward the front or side of your mouth instead of the palate also reduces the chance of triggering a freeze, since the nerve cluster responsible sits further back.
If you’re eating outside on a hot day, you’re more likely to eat frozen treats quickly, and the temperature contrast between the cold food and your warm mouth is bigger. Slowing down is especially helpful in those conditions.
Brain Freeze and Migraines
If you get brain freeze easily and often, you may also be someone who experiences migraines. Research from the Cleveland Clinic has noted that brain freeze is more common in people who get migraine headaches. The two conditions likely share some of the same vascular and nerve pathways, particularly involving rapid changes in blood vessel size near the brain.
This doesn’t mean brain freeze causes migraines or that getting one will trigger the other. But the overlap suggests that people whose blood vessels are more reactive to stimuli in general may be more sensitive to the cold-palate trigger specifically. If you notice you get brain freeze from even small amounts of cold food while others around you don’t, that heightened vascular sensitivity could be the reason.
Can Brain Freeze Cause Any Harm?
No. Brain freeze is painful but completely benign. It doesn’t damage tissue, blood vessels, or nerves. The blood flow changes in the brain during an episode are brief and return to normal as soon as the palate warms up. There’s no reason to avoid cold foods because of it. The only real consequence is a few uncomfortable seconds, and once you know the tongue trick, even that becomes manageable.