Roasting powders, including barley, do not inherently cause high blood pressure. In fact, barley is considered a heart-healthy food, rich in fiber, antioxidants, and minerals like potassium and magnesium, which can support healthy blood pressure levels. However, it's important to note that if you're consuming roasted barley in the form of a prepared drink with added refined sugars or other processed ingredients or food like biscuits, rusks, or namkeen, those added factors can affect blood pressure. Roasted barley itself, in its pure form, should not negatively impact blood pressure. As with any food, balance and moderation are key. If you have concerns about your blood pressure, it's always best to consult with a doctore before introducing anything new into your diet.