If your numbers are mildly to moderately high, give it 3 to 6 months. Focus on losing weight if you’re overweight or obese. Eat a diet low in saturated fat and sodium, and rich in healthy fats, produce, and whole grains.
Research shows that a similar regimen, which includes an emphasis on soy protein and nuts, may lower LDL cholesterol by around 14 percent after six months. For each 2.2 pounds of weight loss, blood pressure could drop from 0.5 to 2 points.
Source: Consumer Reports on Health August 2015