How are LCT and Allergie related?

The relationship between the LCT gene (lactase persistence) and allergies is not clearly established. Lactase persistence allows continued dairy consumption into adulthood, while lactose intolerance often leads to avoidance of dairy. Some observational studies suggest a possible link between dairy intake and reduced risk of certain allergies (e.g., asthma), while others show opposite effects. However, the evidence is inconsistent and mostly based on epidemiological data without clear causality. There are no robust GWAS findings directly associating LCT variants with allergic conditions. Additional factors such as gut microbiome, vitamin D status, and individual food intolerances also play a role. Therefore, no general recommendation can be made. If a milk allergy or intolerance is suspected, medical evaluation is necessary before drawing dietary conclusions.