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Understanding Hair Loss: The Genetic Factors

May 12, 2024 · 81K views · 865 likes · 1 comments · 23 shares

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AI Search Summary

This sponsored genomics video explains genetic contributions to hair loss, including male-pattern and female-pattern hair loss, the move from single-gene theories to polygenic models, and how large-scale sequencing has identified many genetic regions linked to hair loss. It also frames personal genomic results as a way to decide whether to look harder at lifestyle/environmental contributors or treatment response.

  • Main question: How much of hair loss is genetic?
  • Short answer / core takeaway: Hair loss has a strong genetic component, but it is not controlled by a single gene; hundreds of genetic regions appear to influence risk and may eventually help predict treatment response.
  • Evidence type: Genetics explainer, hair-loss epidemiology, polygenic inheritance, sequencing research, and sponsored genomics context.
  • Search topics: genetics of hair loss, male pattern baldness genetics, female pattern hair loss, hair loss SNPs, minoxidil response genetics, Illumina genomics.

Common Search Questions

Is hair loss genetic?

Yes, genetics play a large role in common pattern hair loss. The transcript says modern studies have identified hundreds of genetic locations that influence hair-loss risk.

Is hair loss inherited from one parent?

The video explains that older single-gene ideas are outdated. Hair loss is better understood as polygenic, meaning many genetic regions contribute to risk.

Do women experience genetic hair loss too?

Yes. The transcript says up to 50% of women may experience noticeable hair loss, often with a more diffuse pattern than the front-to-back or bald-spot pattern common in men.

Can genetics predict hair-loss treatment response?

The video says research is still early, but genetic pathways may help predict which treatments, such as minoxidil, are more likely to work for specific people.

Key Takeaways

  • Around 80% of European men are cited as experiencing hair loss by age 50.
  • Up to 50% of women may experience noticeable hair loss.
  • Hair loss was once framed as a single-gene trait, but evidence now points to polygenic inheritance.
  • Sequencing studies have identified hundreds of genetic locations associated with hair loss.
  • The video is sponsored by Illumina and connects sequencing technology to hair-loss research.

Transcript

Personal question about genetic blame

I have always wondered how much of my hair loss I could irrationally blame my parents for, just based on genetics. So I set out to research it and found some surprises.

Hair-loss prevalence in men and women

Studies show that around 80% of European men will experience hair loss by the time they are 50, which tracks based on what we are used to seeing.

But I bet most of those men do not realize that up to 50% of women will also experience noticeable hair loss. It is just that men tend to lose from front to back or a bald spot, whereas with women it is a lot more evenly distributed.

It is way harder for them to pull off the old moon-landing look.

From single-gene theory to polygenic inheritance

Back in 1916, Dorothy Osborne published a paper about why hair loss was not caused by wearing overly tight hats and instead was due to a single gene that affected women less.

That was believed all the way up to 1984, when a delightfully titled paper argued, still just based on observations, that it had to be at least a collection of genes, not just one.

Since then, large-scale genetic sequencing studies have led us to identify 389 distinct locations within our genetic code that influence hair loss.

Treatment prediction and sponsor context

Around 80% of hair loss is due entirely to genetics. But not all hair loss is the same, and studying these varying genetic pathways is slowly helping us understand and even predict which hair-loss treatments like minoxidil will work for which people, and even develop new treatments.

That is why I am excited to be partnering with Illumina for this video. They develop the technology and build the sequencing machines used by many of the researchers in this space.

Hopefully one day I will thank them for looking like this.

Additional Notes

Caption context

This is an @Illumina partner video. The creator says their genomic data suggests they are less likely than average to experience significant hair loss, which points them toward possible external, lifestyle, or environmental contributors.

The caption says that if their genetic risk were very high, they would move more directly toward searching for treatments with the greatest potential impact. It also notes that the science is still in its infancy, but the creator has at least one SNP associated with better response to minoxidil.

Hashtags: #science #sciencetok #Genomics

Keywords and topics

  • Hair-loss genetics
  • Polygenic risk
  • Female pattern hair loss
  • Male pattern baldness
  • Minoxidil response
  • Illumina sponsored video

References