Eating 100 grams of blueberries for 4 weeks twice a day has been studied and is associated with systolic blood pressure lowering. This is equivalent to lowering with blood pressure medication. So would you rather take a synthetic medication or eat blueberries ? I would eat the blueberries.
It is the anthocyanins which are responsible for the beneficial effects. It is these compounds that give the blueberries their red, blue and purple color. Previous studies have suggested that the polyphenols in blueberries are good for aging and preventing neurodegeneration. Mots previous studies focused on the cognitive effects of blueberries.
Now we have a study linked with blood pressure lowering. More studies with blueberries and its active compounds needs to be studied in heart disease