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Sugar allergy symptoms

Updated February 21, 2017

A sugar allergy causes an inflammatory allergic reaction within the body when sugar is consumed. Sometimes, a sugar intolerance is more likely the case, as it is the opinion of some, based upon studies, that sugar allergy does not occur. Dealing with a sugar allergy or intolerance is very difficult, since sugars exist in almost all food sources, naturally and as an added ingredient. Most often it is an intolerance to consuming refined, or processed, sugars. This condition severely limits the types of food that those with sugar allergy or intolerance can consume.

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Insulin Resistance

One of the main concerns related to a sugar allergy or intolerance is that it can cause insulin resistance when too much sugar is consumed. The person may also gain weight and can experience pain in the joints and fatigue. They may find that their nervous system is affected, causing disorientation and forgetfulness.


If symptoms of allergies occur in a person with sugar intolerance, then the most effective way to distinguish between an intolerance and an allergy to refined sugar is to remove all of its forms from the diet. Once the reaction subsides, the sugars in the diet are then monitored as they are reintroduced to the body to isolate a specific source or whether it is a general reaction to sugar.

Hyperactivity and Fatigue

A symptom of sugar allergy or intolerance is the occurrence of hyperactivity, which occurs because the body cannot process the circulating sugars. The person is unable to stay still. This hyperactivity can lead to fatigue, or fatigue can occur without following hyperactivity.


An allergic reaction to sugar can cause feelings of depression. The effect of the circulating sugars on the brain may disturb the emotional state of the person.

Diabetes Concerns

When circulating sugars cause an allergic reaction in the body, the body does not process them properly. This will leave high amounts of these refined sugars in the blood, causing an overload on the pancreas and adrenal glands. When the pancreas and adrenal glands are overworked, they may shut down.This is why sugar allergies or intolerance raise concerns about diabetes developing, because when the pancreas is overworked, insulin secretion decreases or stops.


To deal with a sugar allergy or intolerance, the refined sugars are removed from the diet, and then foods are consumed according to a simplified diet that reintroduces foods to monitor which ones cause an allergic response. In conjunction with this therapy, natural sugar alternatives can be used to add sweetness to foods without the complications of consuming refined sugars.

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About the Author

Naima Manal's articles on health, diet, nutrition, alternative medicine, education, parenting, crafts, travel, home and garden and home improvement have appeared on various websites. Manal received her Bachelor of Science in biology/pre-medical studies from Molloy College in 1994 and has been a freelance writer, teacher and homeschooling mom since 1993.

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