Are blueberries acidic or alkaline?


It’s important that you inquire about the acidity of foods you consume, especially if you are battling with Gastroesophageal reflux disease or acid reflux. Finding out whether blueberries are high in acid or alkaline can help you make the right choice on whether to include it more often in your diet or not.

People battling with acid reflux disease need to limit their intake of acidic foods, because they are one of the many triggerers of the disease. It’s no longer a secret that highly acidic foods such as lime, lemon, grapefruit, and some berries can aggravate acid reflux disease. These acidic foods have a low pH, usually less than 4.6.

If you are not aware of the pH scale, it runs from 0 to 14. Values from 0 – 6.9 indicates acidity, while those from 7.1 – 14 indicates alkalinity. A pH of 7.0 is considered to be neutral. The human blood is slightly alkaline, with a pH of 7.35 – 7.45. The human stomach on the other hand is acidic, and has a pH of 3.5, which helps break down food particles for digestion.


Blueberries are acidic, and have a pH that ranges from 3.12 – 3.33. At a pH of 3.12, blueberries are more acidic than apples (3.3), pineapples (3.3), mangoes (3.4), tomatoes (4.3), and even oranges (3.69). This shows that blueberries are significantly acidic, and may trigger acid reflux.

Blueberries and acid reflux

Theoretically, since blueberries are acidic, then there is a high chance that they can cause acid reflux. However, we shouldn’t forget the fact that our body systems react to particular foods in different ways. Foods that are known to trigger acid reflux in many people might not cause a problem for others. So, the best way to find out if you are one of them, is to give it a try.

If you are an acid reflux patient who is not entirely sure about the effects of a certain food on your well-being, it is suggested that you keep a food-symptom log. You can do that by eliminating all other acidic foods from your diet, and then replacing them with your favorite food (blueberries in this case). You are expected to take note of any symptoms, and most importantly check if they caused you any pain or discomfort. If unfortunately your body reacted negatively to it, then you should remove it entirely from your diet, but if no pain in whatsoever way was experienced, then you can go ahead with its consumption.

Many people with this disease have reported the consumption of blueberries in small to moderate amounts to have little effects on their body. Even though these fruits are acidic, you might be surprised to find out that you can tolerate them so well. According to some anonymous reports on a Support forum on GERD (1), many people knew that blueberries were acidic, but they had to break the rules and continue with their consumption. But they did that in a less frequent manner and only ate them in smaller quantities.

A particular user reported the fact that he didn’t want to miss their awesome antioxidant effect. So, he eats them once in a week, and he’s now enjoying even more pain-free days. Another user who wasn’t aware of the acidity in these fruits reported the fact that he had been consuming blueberries for quite some time and he hasn’t noticed a serious effect yet.


For most acid reflux patients, it’s hard to easily give-up on most acidic foods, particularly the ones you love the most. Blueberries can happen to be a favorite fruit of yours, but unfortunately, they are acidic. If you have chronic acid reflux disease that easily gets triggered by acidic foods, then it is best advised that you avoid these fruits. But if your disease is on a shallow level, and you feel you can’t give up on blueberries, then you can adopt the food-symptom log technique mentioned earlier to find out if you can tolerate its consumption.

By Abbati

Abbati studied Biological sciences at Ahmadu Bello Univeristy, Zaria. He loves learning about the medicinal properties of foods, and the need to explore them!

Leave a Reply