Asthmatics cause global warming

Nutrition Inside

No, really!

Our friends at The Conversation, that bastion of “Academic rigour, journalistic flair” have finally given us an identifiable group of people that we can despise for causing all the floods, cyclones and other assorted bad weather that is attributed to “Climate Change” and “Global Warming” by media pundits.

[…] In asthma, there is narrowing of the airways that carry air into and out of our lungs. The lining of the airways becomes swollen, muscles around the airways contract, and mucus is produced. All these changes make it hard to breathe out.

The most commonly used medicines in asthma are delivered by inhalation. Inhaling gets the medicines straight to the airways, speeding and maximising their local effects, and minimising side effects elsewhere compared to, say, swallowing tablets.[…]

[…] These medicines are available in various sorts of inhaler devices. The devices fall into two broad types: “metered dose inhalers” and “dry powder inhalers” of various shapes and sizes.

In metered dose inhalers, the medicine and a pressurised propellant liquid are mixed together in a little canister, and then sprayed out of the inhaler in a measured puff of fine mist. This is inhaled, often after passing through a “spacer” which allows more of the medicine to reach the lungs. While the medicine is absorbed by the body, the propellant, now a gas, is exhaled unchanged. […]

[…] You might remember hearing, years ago, about “CFCs” — chlorofluorocarbons — and their dire effect on the ozone layer. A successful international treaty, the Montreal Protocol, led to their phase-out from various uses, including medical inhalers. And with that, I thought, the environmental problems of inhaler gases had ended.

And the jury is still out on whether the CFCs actually were responsible for the ozone hole or not: but that is another story.

But CFCs were replaced with “HFCs” — hydrofluorocarbons — which are safe for the ozone layer, but which are potent global warming gases. HFCs are better known in their role as refrigerant gases in air conditioners and refrigerators.

A recent amendment to the Montreal Protocol has now planned a phase-out of HFCs, too, but it’s slow, with deadlines decades away. Earlier prudent management of these gases could make a big difference to climate change.

Oh, no: here we go again.  Have the manufacturers found a new gas, with a better profit margin, for us to use?

The one most often found in asthma metered dose inhalers, norflurane, is 1,430 times more potent than the best-known warming culprit, carbon dioxide. Another, apaflurane, is 3,220 times more potent than carbon dioxide.

Oh noes! The sky is falling …

Such warming power explains why even the small amounts in an inhaler are significant. Globally, tens of millions of tons of carbon dioxide equivalent are attributable annually to these inhaler gases.

But based on some reasonable assumptions, and multiplying these by the number of inhalers dispensed [in Australia the total is] nearly 116,000 tonnes of carbon dioxide-equivalent pollution.

That’s equivalent to the emissions of about 25,000 cars annually. And this is surely an underestimate, as it doesn’t account for reliever inhalers sold over the counter. A person using a preventer inhaler monthly, plus the odd reliever inhaler, could easily release the annual equivalent of a quarter of a ton of carbon dioxide — that’s like burning 100 litres of petrol.

Oh, golly gosh!

If metered dose inhalers are a better choice for you, please don’t panic or quit your medicines.

That is probably the first sensible statement in the article.

These gases probably won’t be the biggest contributor to your personal carbon footprint. Asthma control is really important, and these medicines work really well. But consider changing if it’s an option for you — when it comes to reducing our footprint, every little bit counts.

Yawn!


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In solidarity with the those in the world’s most despised demographic, WH has decided to ‘come out’ as an old white male. WH enjoys exercising the white-male privilege that Whaleoil provides for him by writing the occasional post challenging climate change consensus; looking at random tech issues that tweak his interest, as a bit of a tech nerd; or generally poking the borax at anyone in public life who goes on record revealing their stupidity. WH never excelled on the sports field because his coaches never allowed him to play in his preferred position on the right-wing. WH also enjoys his MG.

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