Stamets to Comic Strips@lemmy.world • 3 months ago[SeanyBoyDraws] Lactose Intolerance Erasurelemmy.worldimagemessage-square78fedilinkarrow-up1714arrow-down125
arrow-up1689arrow-down1image[SeanyBoyDraws] Lactose Intolerance Erasurelemmy.worldStamets to Comic Strips@lemmy.world • 3 months agomessage-square78fedilink
minus-square@MonkderVierte@lemmy.mllinkfedilink4•3 months agoBtw, is there a evolutionary cost to creating lactase? Because, why do we stop with it usually and only keep it if it has huge advantages?
minus-squareRob BoslinkfedilinkEnglish9•3 months agoI would guess that humans have been around for what, 250k years? And that the vast majority of that didn’t involve a whole lot of milk after age 4. So it wouldn’t have been to much advantage to be able to metabolize lactose.
minus-square@MonkderVierte@lemmy.mllinkfedilink2•edit-23 months agoNo, there is, you get more from your cattle, and on a individual level, less likely to starve. Keeping Lactase happened at least twice; north europe and a group in west africa.
minus-squareRob BoslinkfedilinkEnglish3•edit-23 months agoSure, if you a) keep mammals around and b) drink their milk. I’m not convinced domesticated animals have been a thing for all that long, evolutionarily. Long enough for some groups to have adapted, sure. We have adaptations for cooked food, too. [Searches] Cattle probably around 10k years ago.
minus-square@MonkderVierte@lemmy.mllinkfedilink1•3 months agoBut why then creating lactose in milk at all? Fat alone doesn’t suffice?
minus-square@Floey@lemm.eelinkfedilink5•3 months agoIt’s easy to break down into glucose, which is important for bodily functions. Gluconeogenesis is a thing, but it is inefficient.
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Btw, is there a evolutionary cost to creating lactase? Because, why do we stop with it usually and only keep it if it has huge advantages?
I would guess that humans have been around for what, 250k years? And that the vast majority of that didn’t involve a whole lot of milk after age 4.
So it wouldn’t have been to much advantage to be able to metabolize lactose.
No, there is, you get more from your cattle, and on a individual level, less likely to starve.
Keeping Lactase happened at least twice; north europe and a group in west africa.
Sure, if you a) keep mammals around and b) drink their milk. I’m not convinced domesticated animals have been a thing for all that long, evolutionarily. Long enough for some groups to have adapted, sure. We have adaptations for cooked food, too.
[Searches] Cattle probably around 10k years ago.
Yes. It costs calories and nutrients.
But why then creating lactose in milk at all? Fat alone doesn’t suffice?
It’s easy to break down into glucose, which is important for bodily functions. Gluconeogenesis is a thing, but it is inefficient.