this post was submitted on 19 Nov 2023
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How many licks would it take? Can the iron in bars even be processed by the body? Can you do this for other minerals?

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[–] [email protected] 58 points 9 months ago (2 children)

Some kind of iron piece is given in some African countries to fight iron deficiency by putting it in the food while it's cooking, so it works.

[–] [email protected] 53 points 9 months ago* (last edited 9 months ago) (2 children)

Not necessarily licking (I mean, if you do it enough...), but this is a thing

Cool story with interesting social, cultural, and scientific interactions.

It may have been discredited outside of simple iron deficiency since I last read about it, but dietary studies on humans are notoriously difficult to do.

[–] [email protected] 26 points 9 months ago (1 children)

I believe cooking in cast iron pots/pans also provides a source of iron as well.

[–] [email protected] 8 points 9 months ago

Certainly makes sense.

[–] [email protected] 9 points 9 months ago (14 children)

We used one of these with our daughter when she had a concerning iron deficiency. I'm not super sure if it helped since we also started feeding her more iron containing foods, but it didn't hurt 🤷‍♂️

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[–] [email protected] 44 points 9 months ago (1 children)
[–] [email protected] 33 points 9 months ago (2 children)

A little cat iron puck was introduced in an Asian region with high iron-deficiecy in the poorer population, but nobody used it. So they did some research and changed it to resemble a fish instead and it took right off. Turns out the local culture considered fish lucky or something.

[–] [email protected] 13 points 9 months ago

I actually teach my students about this strategy that the WHO employee in Micronesia in my sport nutrition class. It's less about the iron fish, and more about that dietary iron can come from cast iron cooking sources instead of supplementation (as the latter often causes digestive distress).

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[–] [email protected] 43 points 9 months ago (4 children)

I had a bowl of nails this morning…without milk

[–] [email protected] 21 points 9 months ago* (last edited 9 months ago) (1 children)
[–] [email protected] 13 points 9 months ago (1 children)

This is cursed and I would like to subscribe to your newsletter

[–] [email protected] 4 points 9 months ago
[–] [email protected] 9 points 9 months ago

Yeah, well I stubbed my toe last week while watering my spice garden, and I only cried for 20 minutes.

[–] [email protected] 4 points 9 months ago (1 children)

Did you at least include the shrimp

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[–] [email protected] 35 points 9 months ago (1 children)

I saw someone do a demonstration once, they took a box of "iron-fortified" breakfast cereal, dumped it into a bowl, then ran a magnet through it. The magnet picked up some of the dust from the bottom of the bowl, that dust being the tiny iron particles that were added to the cereal to "fortify" it.

[–] [email protected] 18 points 9 months ago* (last edited 9 months ago) (7 children)

I'm not sure why you're putting those words in quotes as if they're incorrect.

[–] [email protected] 6 points 9 months ago (1 children)

I put them in quotes as the word has no objective meaning as applied to a breakfast cereal, it's simply a marketing term. I did not intend to imply that ingested iron particles are not a valid source of iron for human biology.

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[–] smuuthbrane 29 points 9 months ago (1 children)

And which is more bioavailable, metallic iron or iron oxide? Do we want to lick clean iron or rusty iron??

[–] [email protected] 22 points 9 months ago (2 children)

You can get all the iron you need from vegetables and certain meat or even taking supplements. There's no need to go about eating rusty metal. In fact, my doctor has advised me not to eat nails. I have to trust what he says, he's printed out several impressive medical degrees.

[–] [email protected] 48 points 9 months ago (1 children)
[–] [email protected] 6 points 9 months ago

I assumed the doctor was printing out degrees for himself, not his patients... But sure, why not?

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[–] [email protected] 21 points 9 months ago (1 children)
[–] [email protected] 22 points 9 months ago* (last edited 9 months ago)

One...

Two-hooo...

Uh-three- breaks beak on iron bar

[–] [email protected] 15 points 9 months ago* (last edited 9 months ago) (1 children)

US RDA age 19+ is 8 mg / day. Maybe if the iron bar is really rusty. Or, pills are cents a day. OR you could eat breakfast cereal or liver, lentils or spinach, Popeye.

https://ods.od.nih.gov/factsheets/iron-HealthProfessional/#h2

[–] [email protected] 5 points 9 months ago

Breakfast cereals made of liver and spinach feel like an unexplored market

[–] [email protected] 11 points 9 months ago (1 children)

Licking a rusty bar seems like it would be a good way to abrade your tongue and contract tetanus.

[–] [email protected] 34 points 9 months ago (3 children)

Tetanus is a bacteria that lives in soil. It's only associated with rust because rust gives more surface area to allow dirt to accumulate on which bacteria can survive, and because iron objects are often sharp enough to pierce the skin. If you were cut with a gleaming razer that had just had soil smeared on it you'd have a good chance of contracting tetanus!

[–] [email protected] 10 points 9 months ago* (last edited 9 months ago) (1 children)

~~It's also because the bacterium in question is anaerobic, so it dies in an oxygen environment; rusting consumes oxygen, so it helps preserve the bacterium longer out of soil.~~

Edit: I had always been told this, but evidently it isn't true. The rust does not seem to have any effect on the bacterium that causes tetanus. Apologies for spreading misinformation.

[–] [email protected] 6 points 9 months ago (2 children)

I'd be quite surprised if rusting could consume oxygen fast enough to make a difference there?

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[–] [email protected] 4 points 9 months ago (1 children)

Does that mean I can get tetanus by walking around barefoot outside?

[–] [email protected] 6 points 9 months ago

If your feet get cut, sure. This is why tetanus vaccine is given as post-exposure prophylaxis in many places if you get a wound that breaks the skin.

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[–] [email protected] 11 points 9 months ago (2 children)

I've read once that eating iron won't do anything for your iron intake, but for example sticking some rusty nails through an apple for a while and then eating the apple would.

[–] [email protected] 14 points 9 months ago

I think you'd lose just as much iron if not more iron in the blood you'd lose consuming that apple.

[–] [email protected] 4 points 9 months ago (1 children)

What about sticking 5" iron nails into your nose?

Asking for a friend

[–] [email protected] 4 points 9 months ago

They're about four inches too short, mate.

[–] [email protected] 5 points 9 months ago (2 children)

It's hard to imagine there's no culture in the world that would've adopted this as a practice.

[–] [email protected] 7 points 9 months ago

One suggestion in the old days was to stick a nail in an apple for a while and then eat it. The apple of course. Without the nail

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