Probiotics May Reduce Blood Pressure
Consuming probiotics has a small but significant effect in lowering blood pressure, a large review of studies has found.
Researchers reviewed nine randomized trials with a total of 543 participants. All included adults older than 18 who used probiotic products with live bacteria. The studies tested various probiotics in varying amounts, mostly strains of Lactobacillus consumed in dairy products.
Eight of the nine studies found reductions in blood pressure. Over all, compared with control groups, the use of probiotics reduced systolic blood pressure (the top number) by an average of 3.56 millimeters of mercury and diastolic pressure by 2.38.
These are modest reductions, but the scientists suggest that there is a potential for greater effect when blood pressure is elevated to begin with, when multiple species or large quantities of bacteria are consumed or when probiotics are used for longer than two months. The analysis was published in the journal Hypertension.
One of the study’s authors, Jing Sun, a senior lecturer at Griffith Health Institute and Griffith University School of Medicine in Gold Coast, Australia, said that consuming probiotics should be a routine part of a healthy diet. “Yogurt, cheese, fermented soy products — all of these are helpful,” she said. “We have to go beyond just fruits and vegetables.”