Not convinced this change is really saying anything different. “Exclusive breastfeeding” may be a better answer but this is handled fine with card as is
agree with @Cameron, the extra explains how it causes the deficiency, breast milk doesn’t cause it directly its just because it is low in iron
Added #deck-AnKing Overhaul for Step 1 & 2-AnKingMed, rejected-suggestion and removed #deck-anking-overhaul-for-step-1–2-ankingmed, open-suggestion