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From Your Head to Your… Anus: The Truth About Hair | Compilation

442.1K views
•
September 9, 2020
by
SciShow
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From Your Head to Your… Anus: The Truth About Hair | Compilation

TL;DR

Hair color is determined by genetics, not stress, although stress might speed up the graying process. Frizz is caused by the interaction between water and hair proteins. Hair loss is influenced by hormones and genetics. The purpose of butt hair remains a mystery.

Transcript

hair whether you've got a lot of it or absolutely none it's one of those things that all of us have thought about at some point and we've ended up with some questions like why does it change color why does it disappear and yes the big one why is butt hair even a thing we've covered all of this and more over the years and now from your head to your ... Read More

Key Insights

  • 👱 Stress doesn't directly cause gray hair but may speed up the graying process.
  • 💦 Frizz occurs due to interactions between hair proteins and water, particularly in humid conditions.
  • 👱 Hair loss is influenced by hormones, with testosterone converting into DHT, which leads to hair follicle shrinkage.

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Questions & Answers

Q: Does stress actually turn hair gray?

No, stress doesn't directly turn hair gray. It can speed up the graying process by increasing hair turnover, revealing gray hairs sooner.

Q: Why does hair become frizzy in humid conditions?

Frizz occurs when water disrupts the hydrogen bonds between hair proteins. Increased humidity introduces more water, causing hair to change shape and become frizzy.

Q: What causes hair loss in both males and females?

Hair loss is mainly influenced by hormones, particularly testosterone. Testosterone gets converted into DHT, which causes hair follicles to shrink and stop producing hair.

Q: What is the purpose of butt hair?

The purpose of butt hair remains a mystery. It could potentially play a role in scent communication or help reduce friction and irritation in the buttocks area, but further research is needed.

Summary & Key Takeaways

  • Stress does not directly cause hair to turn gray. It can speed up the graying process by increasing hair turnover. Gray hairs only become visible after the old colored hair falls out.

  • Frizz occurs when water disrupts the hydrogen bonds in hair proteins, causing the hair to change shape. Humidity exacerbates frizz due to increased water in the air.

  • Hair loss is affected by hormones, particularly testosterone, which converts into dihydrotestosterone (DHT). DHT causes hair follicles to shrink, resulting in thinner hair or baldness.

  • The purpose of butt hair is unknown, but theories suggest it may serve as a way for scent communication or to reduce friction and irritation in the buttocks area.


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