16 Benefits of Blueberries, Side Effects & How to Eat it

Other important species in North America include V. pallidum, the hillside or dryland blueberry. Hybrids of this with other Vaccinium species adapted to southern U.S. climates are known collectively as southern highbush blueberries. More research may be necessary to understand the full extent of blueberries’ health benefits. This may include protecting against heart disease, diabetes, and obesity, among other conditions.

• While studies haven’t compared the antioxidant content of all berries, there have been some comparisons among select fruits.
• Consume 1-2 cups daily for health benefits without excessive sugar intake.
• Commercially offered blueberries are usually from species that naturally occur only in eastern and north-central North America.
• These species are sometimes called "blueberries" and are sold as blueberry jam or other products.
• Blueberries are a source of various nutrients, including dietary fiber, vitamin K, iron, and more.

North American native species of blueberries are grown commercially in the Southern Hemisphere in Australia, New Zealand and South American nations. Vaccinium has a mostly circumpolar distribution, with species mainly present in North America, Europe, and Asia. Please help improve this article by adding citations to reliable sources in this section. These species are sometimes called "blueberries" and are sold as blueberry jam or other products.

The American Cancer Association suggests that a balanced diet containing whole fruits in a variety of colors may also be beneficial for cancer prevention. Blueberries’ properties may also help to inhibit tumor growth and reduce the risk of cancer recurrence. While both are healthy, wild blueberries may contain more antioxidants than domesticated ones. This amount offers a healthy dose of antioxidants, fiber, and vitamins while minimizing the risk of side effects. Blueberries are considered a superfood due to their dense concentration of nutrients and powerful antioxidants, particularly anthocyanins, which give them their distinctive color. Most nutrition experts and research studies suggest that ½ to 1 cup (75–150g) per day is a sweet spot for health benefits.

Common Blueberry Varieties

Animal studies in the review suggest that blueberries may also help to prevent obesity and manage obesity-related conditions. Since blueberries are low in calories and a rich source of fiber, they may have beneficial effects on appetite management and help people feel full. In a 2024 study, researchers gave 60 adults with self-reported symptoms of depression a blueberry drink then six weeks of blueberry supplementation or a placebo.

How Much Blueberries Can You Eat in a Day?

They grow on flowering shrubs and belong to the genus Vaccinium, which includes other berries like cranberries and bilberries. While their benefits are impressive, it’s also important to understand their potential side effects, the best ways to include them in your diet, and whether they’re right for everyone. For most healthy people, moderate overconsumption may cause digestive discomfort but isn’t dangerous. Freezing actually preserves most nutrients in blueberries, sometimes even better than refrigeration of fresh berries over time.

A study from the University of Reading found that children who consumed a blueberry drink showed improved mood and reduced depression symptoms compared to a placebo group. Chronic inflammation is at the root of most modern diseases — from diabetes to cancer to arthritis. They’re low in calories, high in fiber, and loaded with micronutrients. In this article, we’ll explore the 16 amazing health benefits of blueberries, examine their impressive nutritional profile, and discuss potential side effects. In a reference amount of 100 g (3.5 oz), blueberries φαγητο αλιμοσ supply 57 calories of food energy, and are a moderate source (11-16% of the Daily Value, DV) of vitamin K, vitamin C, and manganese, with other micronutrients in much smaller contents (table).

Compared with other berries

Sparkleberry, V. arboreum, is a common wild species on sandy soils in the Southeast. The rabbiteye blueberry (Vaccinium virgatum syn. V. ashei) is a southern type of blueberry produced from the Carolinas to the Gulf Coast states. Several First Nations communities in Ontario are involved in harvesting wild blueberries. In some areas, it produces natural "blueberry barrens", where it is the dominant species covering large areas. So-called "wild" (lowbush) blueberries, smaller than cultivated highbush ones, have intense color. In North America, the most common cultivated species is V. corymbosum, the northern highbush blueberry.

Wild (lowbush) blueberries are smaller, have a more intense flavor, and often contain more antioxidants than cultivated (highbush) varieties commonly sold in stores. Symptoms can include itching, swelling, or digestive upset. Studies suggest that the antioxidants and polyphenols in blueberries can help relax blood vessels and improve blood flow, contributing to lower blood pressure levels.