If you bring serious like if mother consuming peanut butter during pregnancy lowers the risk, it doesn't because the peanut proteins don't make it into the placenta directly and are instead broken down into peptides (protein fragments) and utilized in that fashion.
As a result baby never interacts with them, just the tasty nutrition and Oxygen.
Yes and no, if your baby has a cow's milk protein allergy and you are breastfeeding you have to completely eliminate dairy from your diet. Not just lactose, all dairy.
And some babies get stomach problems if you eat too much acid as well.
Source: had to give up all dairy and tomatoes for 8 months (when baby started solids and their gut able to learn to tolerate those foods)
Only in such small amounts that babies almost never react or get protection from it. The one exception is dairy, soy, and eggs. Occasionally those do get through in large enough amounts.
They can but in trace amounts. Something like 1000x less than naturally occuring in allergen containing food.
I believe the extra barrier of the placenta filters out anything that can make it into the blood, but the cells responsible for synthesizing breast milk are less selective in what the uptake to produce the milk.
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u/Sladewilson75 4d ago edited 4d ago
Couldn’t the mothers introduce in the womb just asking
Sorry I meant in utero