When something very cold comes in contact with the palate, these nerves blast a message to the brain, which causes blood vessels in the head to swell up suddenly. This rapid swelling of blood vessels causes your head to throb and is a sign you've just eaten your way to an ice cream headache!
These headaches aren't dangerous. They're just a pain. It may feel like an eternity, but most ice cream headaches last only a minute or so and then go away quickly.
Though ice cream is the notorious offender when it comes to brain freeze, it isn't the only food that can induce a headache. Almost anything cold can become a culprit, including frozen slushees, popsicles and even cold water or juice.
Of course, the best way to enjoy a dessert is pain-free! Doctors advise eating cold foods slowly to avoid brain freeze. Others suggest warming foods up in the front of your mouth before swallowing.
If you feel a brain freeze coming on, take a break and allow your palate to warm up. Before you know it, you'll be ready to dig back in.