Researchers “stressed out” study participants recently to find out if adding a sweet little green nut had any effect on blood pressure.

And the results were amazing!

A study released recently from Pennsylvania State University followed subjects whom they subjected to mental and physical stress and compared their results looking at consumption of pistachios. Difficult math problems and tubs of ice water for the feet were the stressful stimuli used to induce a stress response.

Not only did the study leaders notice that the blood pressure went down more for people who ate pistachios compared to those who didn’t eat them, but they also showed improvements in vascular health and heart rate.

The best results (- 4.8 mm/Hg drop in blood pressure) came from eating 1.5 ounces of pistachios a day. Researchers, however, saw improvements in vascular health from eating up to three ounces per day.

Surprisingly (or not) it didn’t make any difference if the pistachios were salted or not. Nor did cooking vs raw change their effect.

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