Small Steps to Allergy Immunity

People with a severe food allergy to something like peanuts or milk have to be constantly on alert because even a trace exposure can be life-threatening. The only real treatment for food allergies is something called desensitization, which works, but it can be grueling. It’s basically giving someone tiny doses of the allergen to build up a tolerance over time. The Sean Parker Center for Allergy and Asthma Research at Stanford is on the cutting edge of developing better ways to cure food allergies. Andrew Long is a lead investigator on the team. (Segment produced by Cole Cummings)