The DASH diet focuses on foods rich in nutrients like magnesium, calcium, and potassium. These nutrients play a significant role in regulating your blood sugar. High blood pressure is a major risk factor for heart disease and affects about one out of every three people worldwide. Research shows the DASH diet can reduce blood pressure in as little as two weeks. The diet also lowers your bad cholesterol levels (low-density lipoprotein), another risk factor for heart disease.