Why is a double-blind, placebo-controlled experiment considered the best type of food challenge test to perform?
A) Because a test is more reliable when the researcher knows who is getting the placebo.
B) Because the patient should not know if he/she is receiving the placebo or suspected offending food.
C) Because the researcher should not know whether the patient is receiving the placebo or suspected offending food.
D) Because blind people are usually more honest in these tests since they cannot see the food.
E) b and c
Question 2
What substance that is found in red wine, beer, cured sausage, pickles, cabbage, and catsup can cause migraines in sensitive people?
A) Protein
B) Alcohol
C) Histamine
D) Monosodium glutamate