Yes. If a chef has a food allergy they simply avoid the food they have an allergy to.

all of them they are to every

thing

yes, it can. I have a food allergy related to dysbacteriosis.

The most common food allergy is peanut allergy

Frederic Speer has written:

'Allergy and immunology in children' -- subject(s): Allergy in children

'Food allergy' -- subject(s): Food Hypersensitivity, Food allergy

'The management of childhood asthma' -- subject(s): Asthma, Children, Diseases