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I don't think this is quite a simple as the Independent article makes out. They are not alone in this.


Industrial helium is mostly sourced from Natural Gas and is supplied in liquified form. Balloon gas is a recycled by-product from MRI machines and other sources. It has impurities and so is no longer suitable for industrial use. Check on this with your local supplier.


I don't tend to buy He balloons but with a 5 year old around we do inevitably acquire them and so I do occasionally inhale it to amuse my daughter. This is perfectly safe to do from a balloon BTW but don't do this from a cylinder - the pressure can cause the bends in the same way as with nitrogen for a diver.


There is an awful lot of bad science kicking around to do with Helium.

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https://www.eastdulwichforum.co.uk/topic/30015-helium/#findComment-624317
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