Skin colour and carotenes

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RRM
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Postby RRM » Fri 04 Jun 2010 16:59

Maybe its not the fat?
My skin also becomes a little less white when i consume loads of tomatoes (lycopene).
Do you eat a lot of carrots, apricots, muskmelons, papaya, persimmon, tree tomatoes, mango, mandarin or loquats? (containing beta-carotene)
Also, when you consume sufficient vitamin A (egg yolks, tuna, salmon)
less beta-carotene is converted into vitamin A,
and the beta-carotene levels may remain high.
Kasper
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Postby Kasper » Sat 05 Jun 2010 11:21

I eat a lot of Mango's, abricots and kiwi's (I tread kiwi's are also high in beta-carotene).

So beta-carotene makes your skin white ? Or do they make it colourfull ?
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Postby Kasper » Sat 05 Jun 2010 11:32

I guess it makes it more colourfull.
I eat lots of mango's (like 2 a day). Kiwi's (4 a day). So that can't be the problem.

But sometimes I forget to eat oil in the morning, my skin is a little bit white (maybe also from going out, smoking marihuana and less sleep).
But once I eat some fat, a hour or half a hour after that, my skin becomes really colourfull. I like it, but I don't understand the correlation with fat.
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Postby RRM » Sat 05 Jun 2010 16:09

Kasper wrote:I guess it makes it more colourfull.
Yes, less white.
sometimes I forget to eat oil in the morning, my skin is a little bit white (maybe also from going out, smoking marihuana and less sleep)
Im pretty sure its the latter.
But once I eat some fat, a hour or half a hour after that, my skin becomes really colourfull.
Thats the blood flow, not related to the fat intake.
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Postby Kasper » Sun 06 Jun 2010 17:59

RRM wrote:
Kasper wrote:I guess it makes it more colourfull.
Yes, less white.
So carotenes cause a less white colour.
RRM wrote:
sometimes I forget to eat oil in the morning, my skin is a little bit white (maybe also from going out, smoking marihuana and less sleep)
Im pretty sure its the latter.
I guess that this white colour is caused by the deprivation of vitamins during this activities.
But once I eat some fat, a hour or half a hour after that, my skin becomes really colourfull.
Thats the blood flow, not related to the fat intake.
Why are you so sure it's because of the blood flow. Why couldn't it be caused by vitamins ?

I was searching about beta-carotene, and I found this article:
http://jn.nutrition.org/cgi/content/full/132/3/399
Carotenoids also appear to contribute measurably and significantly to normal human skin color, in particular the appearance of "yellowness" as defined objectively by CR200 tristimulus b* values.
Since, beta-carotene is fat-soluble. I guess that fat intake can be corraleted to skin colour.
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Postby RRM » Sun 06 Jun 2010 20:20

Kasper wrote: So carotenes cause a less white colour.
Yes.
Kasper wrote:
RRM wrote:
sometimes I forget to eat oil in the morning, my skin is a little bit white (maybe also from going out, smoking marihuana and less sleep)
Im pretty sure its the latter.
I guess that this white colour is caused by the deprivation of vitamins during this activities.
No, its the blood vessel constriction that restrains blood flow to the skin.
Hence less color)
Why are you so sure it's because of the blood flow. Why couldn't it be caused by vitamins ?
Please explain to me how a specific vitamin does this.
Since, beta-carotene is fat-soluble. I guess that fat intake can be corraleted to skin colour.
Only if that fatty food is high in beta-carotene.
But even then the correlation is for both fat and beta-carotene,
and only for as long as you dont eat low fat with beta-carotene or high fat without beta-carotene,
because then there is only a correlation with beta-carotene.

Also, all fruits (and vegetables) high in beta-carotene are low in fat.
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Postby Kasper » Thu 10 Jun 2010 18:04

RRM wrote:
I guess that this white colour is caused by the deprivation of vitamins during this activities.
No, its the blood vessel constriction that restrains blood flow to the skin.
Hence less color)
Why are you so sure it's because of the blood flow. Why couldn't it be caused by vitamins ?
Please explain to me how a specific vitamin does this.


Well I wass thinking of beta-carotene. I thought that maybe smoking and a lack of a sleep could make your skin white because of the deprivation of such vitamins during the night.
Since, beta-carotene is fat-soluble. I guess that fat intake can be corraleted to skin colour.
Only if that fatty food is high in beta-carotene.
But even then the correlation is for both fat and beta-carotene,
and only for as long as you dont eat low fat with beta-carotene or high fat without beta-carotene,
because then there is only a correlation with beta-carotene.

Also, all fruits (and vegetables) high in beta-carotene are low in fat.
Well, that makes sense to me.

If I eat in the morning no fat, but I eat a fruit salad with mango and kiwi's and I forget to eat coconut oil with it, my skin is white. (no fat, high beta-carotene)

If I eat later the day some coconut oil with my fruit salad, my skin becomes much more colourfull. (fat+beta-carotene)

That would explain my fat theory, because I really experienced this in the past, when I sometimes forget to eat fat.
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Postby RRM » Thu 10 Jun 2010 18:57

Kasper wrote:I thought that maybe smoking and a lack of a sleep could make your skin white because of the deprivation of such vitamins during the night.
The levels of vitamins dont fluctuate that fast; you can go many days without dietary beta-carotene
with only the slightest decrease in serum beta-carotene levels.
Smoking, however, has direct blood vessel constricting effects.
Hence less blood flow to the skin, hence a more pale skin.
That would explain my fat theory, because I really experienced this in the past, when I sometimes forget to eat fat.
I do believe you experienced this, but that doesnt make your theory correct.
The point is that serum beta-carotene levels dont fluctuate so fast,
and that the effects of dietary beta-carotene on skin pigmentation takes a long time,
so that your skin cannot get less white within hours by consuming beta-carotene.
It takes at least a few days of very high beta-carotene intakes.
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Postby Kasper » Fri 11 Jun 2010 11:22

Well, then it should be something about blood flow indeed.
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Beta Carotene, Yellow Skin and Sun Protection

Postby djkvan » Mon 22 Nov 2010 00:55

My skin has become yellowish since starting Wai and I thought that something was wrong with this. In fact something is right! The excess beta carotene from all the fruit I eat has stored in my skin. Recent evidence suggests that beta carotene protects the skin from the damaging effects of the sun (sunburn, etc...). I'm not sure to what degree I would be protected in this age of depleted ozone, but it does make me think that a Caucasian could exist in a tropical, sun drenched environment without ill effect, assuming that they were Waiing. Cool, eh? ;D

As per wiki:

There is also evidence that common foods may have some protective ability against sunburn if taken for a period before the exposure.[27] Beta-carotene and lycopene, chemicals found in tomatoes and other fruit, have been found to increase the skin's ability to resist the effects of UV light. In a 2007 study, after about 10–12 weeks of eating tomato-derived products, a decrease in sensitivity toward UV was observed in volunteers.
I do so like green eggs and ham. Thank you, thank you. Sam I am.
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Re: Skin colour and carotenes

Postby RRM » Tue 23 Nov 2010 19:50

;D

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