Guide

Yes, food can help the immune system through a varied, nutrient-dense pattern, but it can’t replace vaccines, sleep, or medical care.

No, food doesn’t change your DNA sequence; diet can modify epigenetic marks that tune gene activity.

Yes—trace food proteins can pass into breast milk; most babies tolerate them, but a diagnosed allergy can trigger symptoms in a small subset.

Yes—food allergy hives can last days, but most IgE food reactions fade within hours; multi-day rashes need review for repeat exposure or other causes.

Yes, food allergy can raise fecal calprotectin, usually modestly in infants; very high results point to other inflammation like IBD or infection.

Yes, food allergy can cause diarrhea, usually with other symptoms and a short delay after eating the trigger food.

Yes, food allergy can cause a body rash such as hives or flushing, and the timing after eating helps separate it from other skin causes.

No. Food allergy doesn’t cause acne; allergies trigger hives or swelling, while acne links more to hormones, oil, bacteria, and diet patterns.

No, food allergy doesn’t cause eczema, but certain foods can trigger atopic dermatitis flares in some people.

No, food allergies don’t cause yeast infections; allergies are immune reactions, while yeast growth follows other triggers.