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Helium will change the tone of your voice. The lighter gas allows the vocal cords to vibrate at a different frequency. However, helium does not sustain life. If you breath too much of it you could pass out, or even die.

The first result of reduced oxygen to the brain is brain damage. The second result is death.

Breathing in pure helium deprives the body of oxygen, as if you were holding your breath. If you couldn't breathe at all, you'd start to die in minutes-as soon as your body exhausted the supply of oxygen stored in the blood. But helium speeds up this process: When the gas fills your lungs, it creates a diffusion gradient that washes out the oxygen. In other words, each breath of helium you take sucks more oxygen out of your system. After inhaling helium, the body's oxygen level can plummet to a hazardous level in a matter of seconds.

You don't have to worry about fatal asphyxiation if you're sucking from a helium balloon at a party. At worst you'll keep going until you get lightheaded and pass out-at which point you'll stop inhaling helium and your body's oxygen levels will return to normal. Of more concern is the possibility that you'll hurt yourself when you fall down.

Remember, the first result of reduced oxygen to the brain is brain damage. The second result is death.

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10y ago

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