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Dr_Baby_Man t1_jdn689c wrote

Reply to comment by thagreentee in Does lactose malabsorption mean we do not get nutrition from consuming dairy? It is said that 70% of world population has lactose malabsorption by ayykayy

Yes, but GI transit time is affected by the osmotic load, and therefore reduces the amount of nutrients absorbed.

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thagreentee t1_jdnyrgp wrote

Thanks for the correction. I am unaware of anything more specific but that sounds plausible.

I would also add that it is by no means essential to consume milk for its nutrient value.

I was just pointing out that primarily lactose intolerant people cannot breakdown lactose and therefore cannot absorb it in any meaningful way as far as i am concerned. Since the question was about nutrients in general.

You seem to know more than me about this. I imagine the reduction in nutrient absorption is not that large?

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Dr_Baby_Man t1_jdo9p5x wrote

It would depend on how fast it moves through the person. It can be rather fast, making any nutrient absorption rather minimal. On the other hand, others are less affected. Lactase deficiency is a threshold, with different people able to tolerate different quantities of lactose before they become symptomatic.

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HowsTheBeef t1_jdnd26d wrote

Is transit time increased or decreased?

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Shark-Whisperer t1_jdnfslc wrote

Decreased transit time and this with increased osmotic pull is responsible for intraluminal fluid accumulation, aka diarrhea. Gas production from increased bacterial fermentation is also increased causing bloating and flatulence.

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