However, it is more likely a sugar intolerance than an allergy.
In some individuals, sugar can cause various symptoms, including digestive issues and migraines.
Most people can manage their symptoms with simple dietary changes.

nortonrsx / Getty Image
This article discusses sugar intolerance and whether it is possible to be allergic to sugar.
It also goes over symptoms and how you’ve got the option to manage a sugar intolerance.
Sugar Intolerance vs. Glucose Intolerance
Sugar intolerance and glucose intolerance are not the same thing.

Get our printable guide for your next healthcare provider’s appointment to help you ask the right questions.
Sugar intolerance is a dietary intolerance to certain types of sugar.
Glucose intolerance refers to metabolic disorders that result in higher-than-normal blood sugar levels.
Another example is with dairy products.
Keep in mind that sugar substitutes are much sweeter than natural sugar, so use them sparingly.
Some research has linked artificial sweeteners to health effects like weight gain and increased risk of diabetes.
Summary
True sugar allergies are rare.
Most people who react to sugar have an intolerance.
An intolerance can cause uncomfortable symptoms like stomach upset, diarrhea, and headaches.
Get our printable guide for your next healthcare provider’s appointment to help you ask the right questions.
American Academy of Allergy, Asthma & Immunology.Allergy/intolerance to sugar.
2023;46(9):1681-1690. doi:10.2337/dc23-0206