Hypertension is a major public health problem. It favors infarction and stroke. Yet prevention measures can reduce high blood pressure: smoking cessation, sports and proper nutrition. In 2015, a study by the Florida State University showed that daily consumption of blueberries could reduce blood pressure.
“To our knowledge, this is the first study that evaluates the effects of blueberries on arterial function […] and the population studied,” said Bahram H. Arjmandi of Florida State University (FSU) about a study published in the Journal of the Academy of Nutrition and Dietetics. These results showed that bilberries can avoid the progression of generalized hypertension. ” (published on Relaxnews in January 2015)
The study used postmenopausal women because they had a higher incidence of high blood pressure than men. The 48 participants were also selected because they had an onset of hypertension. The research team divided the panel into two groups, one each day receiving 22 g of frozen bilberry powder (the equivalent of a cup of fresh blueberries) and 22 g of placebo powder.
After eight weeks of study, the group consuming bilberries saw its systolic blood pressure (the maximum blood pressure) lowered by 5.1% and its diastolic pressure (the minimum pressure) decreased by 6.3%.
The researchers also measured arterial stiffness using non-invasive pulsatile wave velocity measurement. The group having eaten bilberries recorded improvements in their arterial stiffness. Scientists attribute this progress to increase nitric oxide (also called nitric oxide) in the blood, from 9.11 to 15.35 micromoles per liter in eight weeks. The group receiving the placebo treatment did not record a decrease in blood pressure and kept the same level of nitric oxide in the blood.
A recently published Finnish study concluded that wild blueberries could neutralize a high-fat diet by the high concentration of polyphenols contained in this fruit.
Reference : Futura