2 doctors weighed in:
Why did I develop a cashew allergy? Only had cashew butter in past.
2 doctors weighed in

Dr. Paul Carter
Internal Medicine - Allergy & Immunology
1 doctor agrees
In brief: Repeat exposure
Allergic individuals are prone to developing an allergic immune system response to substances after they are exposed to them. This may take only a few exposures, sometimes just one.
In other cases, you may not develop an allergy to a substance until after many exposures. So you can develop an allergy to cashew at any time after you have eaten it, which will show up the next time you eat it.

In brief: Repeat exposure
Allergic individuals are prone to developing an allergic immune system response to substances after they are exposed to them. This may take only a few exposures, sometimes just one.
In other cases, you may not develop an allergy to a substance until after many exposures. So you can develop an allergy to cashew at any time after you have eaten it, which will show up the next time you eat it.
Dr. Paul Carter
Dr. Paul Carter
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