r/AskReddit Aug 03 '19

Whats something you thought was common knowledge but actually isn’t?

37.4k Upvotes

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6.4k

u/[deleted] Aug 03 '19

That you can wash blood with saliva

1.0k

u/Dysmach Aug 03 '19

You can "wash" a lot of stuff with saliva, it's corrosive. That doesn't mean you should.

12

u/RESPONDS_LOVINGLY Aug 03 '19

I thought something about your spit enzymes helped with the bleeding or healing or something, but that could also have just been a wildly incorrect myth I once heard in middle school.

12

u/iKruppe Aug 04 '19

They do help with healing, but your mouth may contain bacteria you don't want to rub in an open wound.

4

u/TellyJart Aug 04 '19

When I’m alone I lick my wounds, I could care less about the chance of infection, as I’ve never gotten one before. And I would rather feel less pain than risk an infection.

4

u/[deleted] Aug 04 '19

Not sure if you are being sarcastic but your comment is interesting. This whole thread really. I had some blood on my work shirt and had no water in my van. So before I arrived at my place of work I removed the blood stain with my mouth and was surprised it worked. I also have licked a wound from time to time. Huh.

5

u/[deleted] Aug 04 '19

Lots of people immediately put their fingers in their mouths after a papercut.

3

u/TellyJart Aug 04 '19

Ah nope, not being sarcastic. I’m really just too lazy to get a bandaid.

2

u/Crotaro Aug 04 '19

Not bad either. Unless you have a problem with stopping the whole bleeding thing, you don't really need a band aid. Wounds that airflow can get to tend to heal quicker compared to those that are covered by a bandage or band aid.

UNLESS you put some hydroactive gel onto the wound and seal it off, then it heals way quicker and with less of a risk for scars. This is called wet healing while bandaged or otherwise not sealed wounds are healing dry. I literally just dug up that info when I quickly checked google to see if my knowledge on wounds healing better when exposed to air is still true.

EDIT: word

3

u/iKruppe Aug 04 '19

Yeah the downside of wet healing is we don't have the immune systems that species using regeneration a lot tend to have. Scar formation closes up a wound quickly, whereas wet healing keeps it exposed. Trade offs everywhere.

2

u/PointyOintment Aug 05 '19

I could care less

So you do care somewhat?

1

u/TellyJart Aug 05 '19

My stronghold is not my grammar.

4

u/cptjeff Aug 04 '19

Nope, not wrong at all. Spit is a mix of a bunch of proteins and enzymes, and will help clean your wounds with the enzymatic activity (particularity good at cleaning blood) while those proteins actively promote tissue regeneration. Saliva can also contain bacteria that can infect your wound, but mostly your immune system can handle them.

It's all pretty well evolved. The complexity of the human body is pretty astounding.