Blueberries are tiny fruits that are packed with nutrition. They are added to everything from cereal and granola bars to muffins and yogurt to make a healthy snack. However, blueberries are not without side effects. They can cause digestive problems for some and interfere with medications. Blueberry juice can also stain and create a cleaning nightmare.
Staining
Blueberry juice and skins produce a lovely purple blue color that can cause stains when it comes into contact with teeth, tongue, lips, nails and skin. While the staining is not permanent, it is difficult to remove and can present a problem for those who need to look their best while handling or consuming blueberries. Using gloves while picking blueberries will protect the skin and nails from staining.
Salicylate Sensitivity
Blueberries contain salicylate, a substance that is similar to aspirin, which comes from salicylic acid. It can produce stomach irritation in the same way that aspirin does, and intolerance levels can vary by person. Raw foods such as blueberries and juices such as blueberry juice can contain higher levels of salicylate that their cooked counterparts, causing more stomach irritation and upset. Those with salicylate sensitivity may be able to better tolerate blueberries when eaten in small amounts.
Interaction With Diabetes Drugs
Blueberries are low in carbohydrates and will not have a large impact on blood sugar levels. However, bilberries, a type of European blueberry, especially in large dose supplemental form, can interfere with diabetes drugs, insulin and other supplements used to control blood sugar, contends BlueberryExtract.com. It is vital to check with your doctor before taking any supplements while on prescription drugs to treat diabetes.
Bleeding Risks
Blood thinners, like anti-inflammatory drugs, anti-platelet drugs and aspirin, are drugs that prevent blood clots. Their downside is that they can also promote uncontrolled bleeding. Bilberry supplements can interact with these drugs to magnify uncontrolled bleeding problems, states BlueberryExtract.com. Contact your doctor before taking any supplements if she has prescribed any of these types of drugs.
