gutsThe other day, I started rambling to my long-suffering husband about childhood stories. I was talking about how blood, flesh, and dead creatures have always grossed me out in a big way. It seemed to me this could be related to being highly sensitive. If not, then hopefully it’s at least entertaining.

Story Time!

When I was in 5th grade, we were shown a cow lung in class. The entire class crowded around a long table as the teacher showed air expanding the lungs. I remember thinking it was interesting.

Someone looked at me and said, “Are you ok? You are white as a ghost.”

I remember thinking that I felt totally fine….what were they talking about? They said, “Why don’t you go sit down.” And it was at that second that I felt it. I went back to my desk and put my head down. My ears were ringing and felt burning hot, I felt nauseous, dizzy, and weak, and saw blackness. (Textbook vasovagel response.) I was also embarrassed, because no one else had a problem but me.

In middle school, we learned how to classify insects into their genus or species or whatever. We had to go out and capture bugs using nets, kill them, then stick pins through their thorax and display them in cases. (Sounds barbaric, doesn’t it?) The idea of sticking a pin through a dead insect disgusted me beyond belief. I spent weeks convincing classmates to do the pinning for me. I’d say, “Can you show me how to do this?” I got all my pinning done this way. One day, I was determined to pin a bug myself. It was a grasshopper–I remember. I shakily held the pin over the dead bug, identified the exact spot to pin it, and hesitated. I didn’t want to do it. It was so gross! I waited and waited, trying to talk myself into it, and finally I gently pushed the pin in AND ITS HEAD POPPED OFF.

nope nope nopity nope!

Lastly, in high school biology, we had to dissect fetal pigs. Some kids got out of it because they felt sick from the smell of the formaldehyde. Sadly, I was ok. We had to choose a lab partner, so I purposely teamed up with a guy with the explicit understanding that he would do ALL the dissecting if I did all the worksheets and wrote the reports. This arrangement worked well. I don’t think I set eyes on the pig once. I’m actually impressed by that feat, even now.

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I listened to a Radiolab episode the other day where they explained how, after heart surgery, this woman could hear her own heart beating all the time. They played the soundtrack of a heartbeat while she told her story–how her super powerful, loud heartbeat distracted her all the time, generally making her life difficult.

However, the craziest thing is this: At the end of her story, the Radiolab folks reported that a few people in their live audience had passed out and vomited from hearing her tale.

They interviewed one of the audience members who felt faint and nauseous. This person said that hearing this story of the ever-present and loud heartbeat made her feel like the thing that was giving life was also the thing causing torment. The woman with the loud heart was trapped, there was no way she could escape this loud beating sound–it was a constant reminder of her life. And that made people queasy.

A scientist Radiolab interviewed explained why some of us feel gross when we see blood and guts. She said: It could be a leftover from evolutionary times–if you faint, a passing hungry lion might leave you alone because you look dead. Or, if your blood pressure drops (you feel faint) and a lion attacks you, there’s less chance you will bleed out since there’s less blood in your extremities.

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Why am I talking about this?

In this post, I’ve talked about how dead pigs, a cow’s lung, and sticking pins through insects made me feel nauseous, dreadful, and faint.

I have always seemed to be more sensitive to blood and gore than most people. I’m not saying this is definitely related to being highly sensitive (I can’t prove it), but I think it is.

So, why do some people have these reactions when others don’t?

I did some research and found lots of interesting answers. I’m not a scientist or doctor, so I’m not the best person to explain them intelligently. But here is one great explanation I found on reddit:

There is a nerve called the vagus nerve, think of it as the “brakes” of the heart. For unknown reasons, some people have a sudden activation of their vagus nerve when they see blood, needles or gore.

Oddly enough; blood, gore and needles for some people causes the parasympathetic nervous system to take over, causing a polar opposite response from that of a normal “anxiety” type reaction.

When the parasympathetic nervous system is activated in this case, the vagus nerve is abruptly activated, causing blood pressure and heart rate to drop. This decrease in blood flow deprives the brain of blood and oxygen, causing a loss of consciousness.

Do you have stronger reactions to blood and guts than others? Share your stories in the comments below.