They’re delicious, popular and versatile – but how healthy are berries? | Well actually

Sprinkled on yogurt, mixed into smoothies or cooked into crumbles, berries are one of America’s favorite fruits.

Luckily, berries are as healthy as they are delicious and versatile: low in calories, full of vitamins and antioxidants, and a good source of fiber. Research shows that, depending on the type, berries support cardiovascular health, can improve gut health and fight inflammation, and show promise as part of a “healthy dietary strategy for diabetes prevention and management,” to quote the researchers. Meta-analyses also link compounds found in berries to better cognitive health.

Here’s what experts say about the health benefits of berries.

Why are berries good for the brain?

Berries provide a significant dose of antioxidants.

“We think the high polyphenol content of the berries makes them so protective” when it comes to mental processes such as memory and attention, said Maggie Moon, a registered dietitian.

Polyphenols constitute a broad category of plant compounds; In berries, the most active and proportionally significant are anthocyanins, which also give many berries their blue, purple and red pigments.

Researchers are studying whether berry polyphenols and the metabolites produced when gut microbes process them can influence inflammation and blood vessel function. Since the brain relies on a large blood supply, improved vascular function is a plausible pathway by which berries could support cognition.

“Simply put, anthocyanins likely create a healthy working environment for brain cells by improving blood flow to the brain, which improves oxygenation and nutrient delivery,” said Tim Crowe, a nutrition scientist who closely follows anthocyanin research. “What’s good for our blood vessels is also good for our brain.”

The equivalent of a daily cup of blueberries was associated with slightly improved information processing speed compared to a placebo in older adults with mild cognitive impairment over a six-month period, according to a study led by Mary Ann Lila, a professor in the department of food, bioprocessing and nutrition sciences at North Carolina State University. This suggests that the berries might not only be neuroprotective, but also an intervention for those already experiencing cognitive decline. “A pretty amazing result,” said Lila.

A particular eating pattern called the Mind diet — a version of the Mediterranean diet aimed at supporting cognitive health — involves berries. “We have strong indications that diets rich in berries over many years tend to slow cognitive decline and delay cognitive aging,” said Moon, who wrote a book on the Mind diet.

In the 2015 Mind Diet study, researchers observed 923 participants. They found that those who prioritized whole foods, including berries, leafy greens, nuts and seeds, beans, oily fish and olive oil – while avoiding sweets, ultra-processed foods and red meat – for 4.5 years on average had a 53% lower risk of developing Alzheimer’s disease compared to those who didn’t.

Which berry is healthiest?

Experts say that if you eat berries – strawberries, blackberries, currants, raspberries, blueberries – you benefit.

“All berries are good. We should eat a lot more of them than we do,” Lila said.

However, some studies suggest that wild berries may have a slight nutritional advantage over their conventionally grown counterparts because they develop an “abundance of phytochemical resources” to “defend them against the environment,” Lila said. “These are the same phytochemicals that, when we consume them…dispel chronic human diseases. »

Each type of berry has its own valuable nutritional footprint. Some punch above their weight in particular categories. For example, cranberries are the only commercially grown berries to contain a significant amount of “a particular type of polyphenol called proanthocyanidin type A” that helps prevent recurrent urinary tract infections, Lila said.

Blackcurrants, meanwhile, provide the most vitamin C per cup of raw berries – around 190 mg, compared to just 15 mg in blueberries. Raspberries are the fiber champions, with 8g, or about a third of your daily fiber needs, per cup.

Blueberries contain high levels of anthocyanins and are colloquially considered a superfood – but that doesn’t necessarily mean blue is the best. Other varieties might have similar benefits, but blueberries are “the best-studied ones” because they are known to produce positive results in nutrition research studies, Crowe said.

Moon recommends eating a cup of berries per day, although she notes that any amount you add to your diet regularly is a net positive. “The more fruits and vegetables people eat, including berries, the better,” she said.

Should we be worried about pesticides on berries?

The berries typically appear on the Dirty Dozen, an annual list compiled by the nonprofit Environmental Working Group. EWG tests detect pesticide residues, and their results often make headlines, leading people to wonder if they should avoid certain fruits and vegetables.

It is important that pesticide residues on organic and conventional products remain below regulatory limits. In the United States, these standards are set by the Environmental Protection Agency, and monitored and enforced by federal regulators such as the Food and Drug Administration and the U.S. Department of Agriculture. But the simple detection of a substance does not automatically translate into a dangerous concentration.

“Dose makes the poison, and detection is not the same as harm. The very real benefits of eating a variety of produce, including berries, outweigh the theoretical risks,” Moon said. “No major scientific or public health organization recommends avoiding conventionally grown produce, including berries.”

“One would have to eat hundreds of servings of each food to even reach the safe threshold, which is already 100 to 1,000 times below a level that could theoretically cause harm,” writes science communicator, microbiologist and immunologist Dr. Andrea Love in her 2025 assessment of the Dirty Dozen.

What are the best ways to eat berries?

“Fresh and frozen berries have pretty similar nutritional profiles,” Moon said. Frozen berries are flash-frozen shortly after they are harvested, which means they retain their nutrients well. Frozen berries are convenient and potentially less expensive than fresh berries, Crowe added. Freeze-dried berries also retain their nutrients.

However, anthocyanins are sensitive to heat and research has shown that they can be reduced in berries by up to 80% during prolonged high temperature processes such as jam making.

Berries aren’t just for breakfast or sweet preparations, either. “One of my favorite ways to eat berries is a wild fruit salsa – all the ingredients of a salsa minus the tomatoes, with wild blueberries inside,” Lila said. “It’s a nice cold blue dish that you pick up with chips, and because it’s raw you don’t waste any power heating.”