Some believe exercise is the only thing needed to achieve health, but a balanced diet light on fast food and junk food can help people avoid high cholesterol and high blood pressure decreasing the risk of heart disease. Heart disease is the number one killer of men and women in the United States. - Some believe exercise is the only thing needed to achieve health, but a balanced diet light on fast food and junk food can help people avoid high cholesterol and high blood pressure decreasing the risk of heart disease. Heart disease is the number one killer of men and women in the United States.