Hair colour changes

[dreamcatcher]

Hi guys, does anyone know what causes black hair on one's arms turn blond/ginger?
A friend of mine started to eat a healthier diet, excluding PUFAs and following Ray Peat's ideas a year ago and now turning blond lol. Thank you.

 

[Servier]

Hi, is it only arms ? Could it be sun exposure ? mine turn blonde as well during summer

 

[Gânico]

I got hairy legs that turn blonde in the sun

 

[dreamcatcher]

Yes. The person affected, had long hours of sun exposure daily for many years (working in nature most of the day) but the sudden hair pigment change only started a few months ago.

 

[redsun]

Hi guys, does anyone know what causes black hair on one's arms turn blond/ginger?
A friend of mine started to eat a healthier diet, excluding PUFAs and following Ray Peat's ideas a year ago and now turning blond lol. Thank you.

Perhaps more cysteine synthesis in the cells which could favor pheomelanin production over eumelanin production.

 

[Blossom]

Perhaps more cysteine synthesis in the cells which could favor pheomelanin production over eumelanin production.

You are truly a wealth of knowledge!

 

[dreamcatcher]

Perhaps more cysteine synthesis in the cells which could favor pheomelanin production over eumelanin production.

Thanks so much.

 

[Drareg]

Perhaps more cysteine synthesis in the cells which could favor pheomelanin production over eumelanin production.

This is interesting, have you got more info on the process?

 

[redsun]

This is interesting, have you got more info on the process?

Well its partly about the ability of the body to make cysteine. Which is done in the methylation cycle. Various enzyme mutations can then favor homocysteine to funnel through the transsulfuration pathway which then eventually leads to cysteine. And of course the opposite is also the case. I will link a website where a biochemist actually provides some answers on this. Of course as he says himself in his answer, the pathways and enzymes and such are highly regulated and dependent on genes. I forgot that also glutathione itself can be used, not just cysteine.

How to increase pheomelanin production?

How can you increase the pheomelanin production in your body, while decreasing the eumelanin production? In other words, shifting the balance towards pheomelanin. From what I see, sulfur and cyste...

biology.stackexchange.com

 

[Drareg]

Well its partly about the ability of the body to make cysteine. Which is done in the methylation cycle. Various enzyme mutations can then favor homocysteine to funnel through the transsulfuration pathway which then eventually leads to cysteine. And of course the opposite is also the case. I will link a website where a biochemist actually provides some answers on this. Of course as he says himself in his answer, the pathways and enzymes and such are highly regulated and dependent on genes. I forgot that also glutathione itself can be used, not just cysteine.

How to increase pheomelanin production?

How can you increase the pheomelanin production in your body, while decreasing the eumelanin production? In other words, shifting the balance towards pheomelanin. From what I see, sulfur and cyste...

biology.stackexchange.com

Thanks.
Peat recommends lowering methionine in the diet, methionine free diets in mousse/rat models extend life span by over 40%, interesting to think about.

 

[golder]

Perhaps more cysteine synthesis in the cells which could favor pheomelanin production over eumelanin production.

How can one lessen this synthesis?

 

[i_nomad]

I got hairy legs that turn blonde in the sun.

Ok, Joe. Whatever you say.

 

[dreamcatcher]

How can one lessen this synthesis?

If you read the article he shared, the person is asking about the same in the comments section.