Damus
Ryan Froggatt · 2d
There’s is no evidence to suggest ‘many’ humans don’t have these adaptations you’re using the fact that a very very low percentage of the population may have these, so therefore I can use th...
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"While very few people are completely unable to convert beta-carotene to retinol, up to 45-60% of the population are considered "low responders" who have a significantly reduced ability to do so."

You can look this up for every plant-nutrient>>>animal-nutrient pair and see for yourself. You can then calculate the amount of people who will realistically live well on a plant based diet. It is less than half of all the people.
1
Ryan Froggatt · 2d
You can supplement non-animal derived retinol, and it’s even advised to do so if you are a low converter. Not wanting to take a supplement isn’t a very good moral justifier to torture and kill billions of animals per year. That amount of suffering far outweighs the inconvenience of taking a sup...