If only we understood how to regulate immune tolerance. Using peanuts to fight a peanut allergy would seem the ideal example of the phenomenon of immune tolerance. http://www.nytimes.com/2009/03/16/health/16peanuts.html
An allergy or hypersensitivity is an immune system overreaction to a stimulant. People who suffer from allergy can be sensitive to more than one trigger. Dust mites pollen pet dander or smoke are all frequent allergens. Anything from chlorine to perfume can trigger allergies in sensitive people. Some foods such as peanuts nuts seafood and shellfish can occasionally cause life-threatening allergic reactions in people.
From Harvard Medical School comes the news that the costly advertising of new prescription drugs targeted at the consumer may not have any effect on sales of expensive drugs. Pharmaceutical companies spent about $4.2 billion in direct-to-consumer ads in 2005 yet researchers now report the effect of all that spending may be minimal. A research team set up an experiment using French-speaking Quebec residents as their "control" group.