What Causes Hair to Turn Gray?

TL;DR

Stress, genetics, and natural aging are some of the factors that can cause hair to turn gray.

Transcript

Anyone who has watched a President who isn’t dying their hair through their term in office knows stress might be a cause for gray hair. If you have teenagers, you've probably even remarked to them the stress they cause you is making your hair turn gray, all the while not fully appreciating the fact that you have hair in the first place.... In any e... Read More

Key Insights

• 👱 Hair color is determined by the production of pigments known as melanin, produced by melanocytes.
• 💛 There are two main types of melanin: eumelanin produces dark browns and blacks, while pheomelanin produces reddish/yellow color.
• 👨‍🦳 Gray hair is the result of a decrease in melanin production, while white hair has no melanin at all.
• 👱 Factors such as genetic predisposition, aging, hydrogen peroxide build-up, and chronic stress can contribute to hair turning gray.
• 👱 Hair growth is controlled by the length of the anagen phase, which varies based on genetics, hormones, and stress levels.
• ☠️ Shaving does not affect hair growth rate or color, as they are determined by internal factors.

Questions & Answers

Q: What causes hair to turn gray?

Hair turns gray when there is a decrease in melanin production by melanocytes, due to factors like aging, genetic predisposition, and the build-up of hydrogen peroxide.

Q: Can stress really cause gray hair?

Yes, chronic stress has been shown to release neurotransmitters that can cause DNA damage, leading to the graying of hair.

Q: Are there other factors that can contribute to hair turning gray?

Yes, factors such as genetic defects, abnormal hormone production, abnormal distribution of melanin, and exposure to pollutants or toxins can also contribute to hair turning gray.

Q: Does shaving affect hair growth or hair color?

Shaving does not affect hair growth rate or hair color. Hair growth and color are primarily determined by genetics and hormones, which are not affected by shaving.

Summary & Key Takeaways

• Gray hair is caused by a decrease in the production of melanin, the pigment responsible for hair color.

• Genetic factors play a significant role in determining hair color, with specific genes responsible for red hair already identified.

• Aging and the decrease in melanocytes, as well as the build-up of hydrogen peroxide, can contribute to the graying of hair.