What is the reason people have allergies to soy?
Soy allergies are caused when the immune system mistakenly believes certain soy protein to be harmful. To protect our body, immune system releases the chemical histamine, resulting in an allergic reaction.
Soy allergy is common in infants and children and many outgrow soy allergy by age 5. However, about 1% population in the United States are allergic to soy. Avoiding soy is the only way to prevent soy allergies
Hi,
Here is a good link that gives a detailed answer to your query:
http://www.mayoclinic.com/health/soy-allergy/DS00970/DSECTION=causes
Regards,