Term
| What does it mean to be lactose intolerant? |
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Definition
| Defieciency of the Lactase Enzyme - newborns get Lactose from milk and first needs to convert it into glucose and galactose using the enzyme lactase. After weaning, the amount of lactase goes down to 10% and many people can keep this level up through adulthood but most people lose it and become lactose intolerant - almost all Asians and Africans and many Europeans. These people can drink fermented milk because bacteria does the job of the lactase. People who can drink milk in adulthood may be at an advantage in higher latitudes when there is less vitamin D which is necessary for calcium absorption, people can drink milk to compensate. But Africans don’t need this because there is plenty of vitamin D to go around |
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Term
| Which people tend to be lactose intolerant? |
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Definition
most African and Asians and many Europeans, there is a chart of
percentages by population in Molnar on page 125 |
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Term
| Where are lactose intolerant people found? |
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Definition
| Asian, Africa, etc? Areas where there are larger populations on Lactose absorbs are in northern europe and a few pastoral tribes in east africa - they are in places that have a history of consumption and contact with fresh milk via cattle, goats and reindeer. |
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Term
| How do lactose intolerant people adapt? |
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Definition
| Lactose Absorbs rely heavily on milk as a form of sustenance, Lactose MalAbsorbers (LMA)s ferment their milk to make it safe for them to consume |
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Term
| What are the implications of lactose intolerance adaptations? |
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Definition
| People who can drink milk in adulthood may be at an advantage in higher latitudes when there is less vitamin D which is necessary for calcium absorption, people can drink milk to compensate. But Africans don’t need this because there is plenty of vitamin D to go around |
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Term
| What are the genetics of lactose intolerance? |
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Definition
| Lactose Absorption is passed down as a simple inheritance trait and generally a community has the same type of absorbers, like the pastoral villages in east africa that can all drink fresh milk, or asia who has to eat shitty tofu |
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Term
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Definition
| foods that the cultures eat would be affected? |
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