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Thread: Lactose Intolerance World Map2602 days old

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    Default Lactose Intolerance World Map



    I find this map interesting for two reasons...

    1. I am lactose intolerant, but my ancestry traces back to areas with low instances of lactose intolerance. Of course, I don't have my family lineage traced back that far and genetics has a way of creeping up on you.

    2. African-Americans have a high rate of lactose intolerance, yet the regions of Africa where their ancestors come from seem to have low rates of it. I am curious as to why that is.

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    My cousin is the same as you. Her ancestry is all in the Green and she is lactose intolerant. I have some of the reddish brown(from Southern Europe) and I'm fine with dairy products.

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    I'm lactose persistent and so are all my family members.

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    I live on milk.

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    @DragonRouge, It can be that by now Lactose tolerance has improved in those regions, but the biggest factor is that Africans from the upper west coast have had goats for some time, this allows for some lactose tolerance, similarly some andean natives have had lamas, etc. Alot of African-Americans, specially in Georgia/Missipi/Lousiana do come from the Red regions, Kongo kingdom, that includes, Congo, ANgola, Zaire, places where the forest is way too thick for cows and goats to roam. Many Dominicans have a high rate of lactose intolerance because of this. Both my father and mother are lactose intolerant, and atleast 50 - 60% of their family members are, me and my 2 brothers got lucky we can drink milk, but my sister however is lactose intolerant as well.

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    Maybe this is a dumb question that I have taken for granted.
    How would one FULLY know if they are persistent or intolerant?

    For those that do have that problem does Milk and Dairy give you problems EACH and EVERY TIME you use them. You would be sick after :
    -eating a bowl of cereal with milk?
    -drinking coffee with milk and or cream
    -Ice cream?

    How bad is it?

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    That's a sharp ass cut-off in Africa. No gradient whatsoever. It is odd to me, that so many European countries have no data, and that so many African countries do. I also thought there was a stronger correlation between African ancestry and lactose intolerance, but apparently it is more complex than that. It seems to form two distinct groups.

    ---------- Post added 2010-02-09 at 08:14 ----------

    Quote Originally Posted by beyoku View Post
    Maybe this is a dumb question that I have taken for granted.
    How would one FULLY know if they are persistent or intolerant?

    For those that do have that problem does Milk and Dairy give you problems EACH and EVERY TIME you use them. You would be sick after :
    -eating a bowl of cereal with milk?
    -drinking coffee with milk and or cream
    -Ice cream?

    How bad is it?
    I was also wondering this. Is the difference between tolerance and intolerance extreme? Or is it subtle difference?

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    Noone in my family is lactose intolerant, although my little brother is allergic to it (but if he has cereal, it doesn't affect him).

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    Quote Originally Posted by Grasshoppa View Post
    That's a sharp ass cut-off in Africa.
    It is. I also find it interesting that France is cut in half. But I guess the food culture is completely different in Northern and Southern France. My ancestors came from Nothern France but I mist have some ancestry from the South in me too because I am lactose intolerant and also have more of a Mediterranean look to me.

    I was also wondering this. Is the difference between tolerance and intolerance extreme? Or is it subtle difference?
    It's quite subtle. Basically, your ability to digest lactose depends on how much lactase enzyme you produce. Some people can have problems with dairy products higher in lactose, like ice cream for example, but can eat products lower in lactose like yogurt and certain types of chesse. I know myself I cannot eat ice cream at all, but I can eat yogurt with little problems as it is lower in lactose.

    Also, the amount of lactase enzyme your body produces reduces with age, so people get more lactose intolerant as they get older.

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