Blueberries are a delicious blue colored berries that grow on the shrubs of South America but now has started to grow in other parts as well.

They are considered to be a really healthy fruit for weight loss, heart health, brain health, or skin health. They are rich in fiber, potassium and vitamins A as well as K.

In simple words, they are very nutritious. However, like every good thing, blueberries have their own side effects too. They might include gastrointestinal problems, hypoglycemia and an increased risk of bleeding. Thus, there should always be a certain limit to which you should be consuming this fruit.

Let us talk about the side effects of blueberries now

1 Blueberries can cause digestion problems – if you eat too many of blueberries you might end up having a lot of of digestive side effects. This happens due to the high rate of fiber present in this fruit. Especially if you already have a lot of fiber in your diet, you should avoid blueberries to avoid bloating, stomach pain and diarrhea. People suffering from digestive diseases like ulcerative colitis or Crohn’s disease are at more higher risk to this side effect.

2 Blueberries may cause an increase in bleeding – if you have been prescribed blood thinning medications like warfarin and anti platelet drugs like clopidogrel, you should try to stay away from blueberries. This fruit contains two major components that plays just opposite roles of blood clotting. The vitamin K present in it is responsible for blood clotting and the salicylates in it increase blood thinning. if we calculate, then a cup of blueberries contains 28 mcg of Vitamin K. Even though it is not a lot, you should also consider the fact that these berries are not the only source of Vitamin K in your diet. Also, it could be said that the salicylates compensates for the blood clotting mentioned above. This would in turn increase the effect of your medicines.

3 Blueberries helps in lowering blood glucose abnormally which might be harmful for your body – Blueberries are responsible for reducing blood sugar level and also increase the insulin sensitivity. They also bring down the blood glucose spike after a meal which might be carb – rich. They do so by blocking the function of certain digestive enzymes. Apart from this, they also slow down the protein digestion.

4 They cause allergies – if you are a person who is allergic to aspirins, it is most likely that you would be allergic to blueberries to due to the salicylates present in it. In each cup of 100 g blueberries, there is 27.6 mg salicylates which is a concerning amount. The allergy can cause wheezing, asthma, rashes or even stomach pains.