Helium voice?

Why does our voice change pitch when we breath helium? are there side effects for doing it too often?
Answers:
the reason your voice increases in pitch is because the helium streches your vocal cords and makes them move faster than usual. It isn't good to do it too often as it can make you a bit light headed.

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The high voice is produced because your vocal cords are vibrating in an atmosphere much less dense than air. Lack of oxygen is the only harm. Helium is nonreactive.

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helium is lighter then air ..and yes its just like huffing any other gas besides oxygen

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Inhaling a small amount of helium temporarily changes the quality of a person's voice; however, caution must be exercised as helium is an asphyxiant, meaning the health problem you might encounter from inhaling helium is oxygen deprivation, which can be very serious. This will only happen if the helium displaces all the oxygen from your lungs. As long as you don't breathe only helium, that is, if you take a few breaths of air after exhaling the helium, there should be no problem.It is a common misconception that Helium's effects on the voice are related to its density. The real explanation is slightly more complicated. Because Helium is monoatomic (earth's atmosphere consists of over 95% diatomic molecules), its adiabatic index differs from that of air. This means that the speed of sound in helium is faster, and sound of the same frequency has a longer wavelength compared to in air. This difference results in the vibrational modes of the larynx corresponding to higher frequencies, and thus a higher pitched voice. An audio source which does not rely on a resonant air cavity (such as computer speaker) will not change pitch in a Helium atmosphere.

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The high voice is because helium is lighter than air, therefore the vocal chords don't have as much resistance when speaking.
Long tern affects come from the tank. If you suck it straight from the tank, sometimes even from balloons, you can get the metal shavings from the inside of the tank in your lungs. they are microscopic, and can cut your lungs, along with the fact that more metals in your body are a cause of Alzheimer's, but if you use antiperspirant you will probably get it anyways. I say just have fun! We all have to die sometime!

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After hydrogen, helium is the second lightest element and the second most abundant element in the universe, created during big bang nucleosynthesis and to a lesser extent from nuclear fusion of hydrogen in stars. On Earth, helium is primarily a product of the radioactive decay of much heavier elements, which emit helium nuclei called alpha particles; it is found in significant amounts only in natural gas, from which it is extracted at low temperatures by fractional distillation.First detected in 1868 by French astronomer Pierre Janssen as an unknown yellow spectral line signature in the light of a solar eclipse, helium was separately identified as a new element later that year by English astronomer Norman Lockyer. Its presence in natural gas in large, useable amounts was identified in 1905. Helium is used in cryogenics, as a deep-sea breathing gas, for inflating balloons and airships, and as a protective gas for many industrial purposes, such as arc welding. Inhaling a small amount of the gas temporarily changes the quality of a person's voice; however, caution must be exercised as helium is an asphyxiant.

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