The reason why some people believe that blueberries can cause acne is because sometimes people have allergic reactions to this fruit which can mimic the symptoms of acne. If you eat blueberries and as a result experience red marks on your skin, it is most likely nothing more than hives, which is a common allergic reaction.

It is important to get tested for food allergies if you have not already done so, because you will want to know which foods you should stay away from. Although studies have linked certain foods to the worsening of acne, blueberries are not one of them.