If you think you've had a bad reaction to something you've eaten, it may be time for an allergy test...even if you're not allergic to anything.
A new study shows about one in 10 adults has a food allergy, and as many as half of them developed the allergy as an adult.
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The most common culprit was shellfish. They say if something you eat always seem to trigger a bad reaction, it could be a new allergy.
If you can't avoid the food, they recommend being tested by your doctor.