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A review of 21 studies found eating pistachios reduced people’s systolic number (the top number in your blood pressure reading) by 1.82mm/Hg and the dystolic number (the bottom number) by 0.8 mm/Hg.
Just make sure you opt for unsalted pistachios: salt is to be avoided when you’re following a diet to lower blood pressure.
Healthier blood vessels
Pistachios are also rich in L-arginine, an amino acid which turns into nitric oxide when you eat it.
Nitric oxide is crucial for a process called vasodilation, where your blood vessels dilate, increasing blood flow.
For this reason, pistachios are even recommended to treat erectile dysfunction.
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