I've heard somewhere said that :
Stomach cells do not absorb anything larger than single amino acids.
Is that wrong? How do biological toxins (peptides/proteins) from mushroom or bacteria like Botulinum come to our blood and affect our body after we eat them?
Update: In fact, i want to know if we drink milk, is there anyway IGF-1 protein from milk can pass through the intestine and affect our body. Because I see some arguments/debates about the IGF protein in milk can cause acne.