Regularly eating dark-fleshed grapes, berries, and blueberries can contribute to improved heart health, according to a study that analyzed existing research.
The findings suggest that naturally occurring compounds in these fruits are associated with modest but consistent improvements in cardiovascular risk markers, with a notable impact on blood vessel function.
The analysis, which included 17 systematic reviews and 20 randomized controlled trials published since 2015, indicated potential benefits for blood pressure, inflammation, and cholesterol levels. One of the more significant studies within the review demonstrated that consuming 150 grams of blueberries daily for six months enhanced blood vessel function, which is crucial for efficient blood flow.
Researchers stated that these improvements align with an estimated 12 to 15 percent reduction in cardiovascular disease risk, although the trials did not directly track heart attacks or strokes. The benefits are likely attributed to polyphenols, plant compounds known for their anti-inflammatory properties and ability to protect against oxidative stress.
The review, published in the journal Nutrients, found that individuals with higher cardiovascular risk, such as those who are overweight or obese, have high cholesterol, elevated blood pressure, or other metabolic risk factors, tended to experience more pronounced benefits.
Given the increasing rates of obesity and cardiovascular disease, study authors suggested that raising public awareness about the role of dark-fleshed fruits like grapes and berries could be a practical strategy for promoting cardiovascular health. Cardiovascular disease, encompassing conditions such as coronary heart disease, heart failure, and stroke, affects millions globally and is a leading cause of death.