 [ Symptoms ] coworker says that gluten is addictive in the same manner as an opiate and in fact hits the same receptors is this true  a coworker says he is not celiac but is sensitive to gluten he also claims that it is an addiction and in fact gluten hits the same receptors in the brain as opioids in fact not wanting to just give up gluten is a sign that your addicted this all of course sounds like nonsense to me i could not find any unbiased answer via google as far as the opioidgluten link though celiac is only 1 of the population he claims that 1 in 8 actually are sensitive but just do not know it  thanks  alex [ Disease ] excessive calorie intake and lack of calorie burning are the main causes of weight gain allergies per se does not cause weight gain but changes in food quality switching from a food that is suspected of causing allergy to one of higher calories and amounts of food can be a subtle cause if the person is not aware they are actually eating more calories failure to thrive in infants is a lack of weight gain and would not be comparable