Here are some good links to help get him started:
Foods rich in Vitamin C, Vitamin E, magnesium, calcium, potassium, monounsaturated fats and omega 3 fatty acids help lower blood pressure.
Foods to eat include all leafy greens like kale, spinach, romaine and chard, beets, broccoli, asparagus, cabbage, celery, crimini mushrooms, onions, garlic, almonds, avocado, walnuts
rice bran (rich in magnesium and many B vitamins), strawberries, kiwi, tomatoes, papaya, raspberries, oranges, bell peppers, potatoes
In addition, foods with a diuretic effect (cucumber, lemon, celery, beets, cabbage, parsley, tomato, watermelon, asparagus) have been shown to help.
Almost anything you put in a NutriBlast will benefit you. These foods are filled with fiber and antioxidants...two important components to help reduce cholesterol. Focus on soluble fiber - this type binds LDL cholesterol to help remove it from your body! Oats, apples and flax seed are great additions to a cholesterol-lowering NutriBlast. Grapes, strawberries, and citrus fruits also contain pectin, a type of soluble fiber most noted in apple skins, that lowers LDL. Check out this link from Harvard that distinguishes the breakdown of fiber found in several foods.
Outside of NutriBlasting, I'd recommend eating more plant-based foods and fewer processed carbs. With continuous NutriBlasting...over time, you will more than likely see the numbers drop!