Studies have shown that fat-free dressings actually inhibit the absorption of nutrients from greens and veggies. In one study, volunteers ate spinach, romaine lettuce, tomatoes and carrots topped with two ounces of Italian dressing containing either 0, 6 or 28 grams of canola oil. Blood tests revealed that the people who ate the fat-free dressing only absorbed a negligible amount of beta-carotene, a carotenoid that's been linked to protection against cancer and heart disease. In fact, it was the highest fat dressing which offered the greatest absorption of beta-carotene as well as alpha-carotene and lycopene!

The best salad dressing is homemade because many store dressings are very high in sodium. But don't worry; it's very simple to make a salad dressing. You just need a healthy oil, a good vinegar (like balsamic or champagne) or a citrus juice (orange or lemon) and some fresh ground pepper and herbs. A good recipe is on page 307 of The SuperFoodsRx Diet book. If you want to buy a bottle of dressing there is a great list of healthy salad dressings on page 299 of our bestselling, SuperFoodsRx Fourteen Foods That Will change your Life.

Whichever you prefer, do not to use too much! Go easy on the dressing; you don't need to soak your salad. You really don't need more than two tablespoons. If you want to stretch your dressing you can add a bit of water. This way you'll be able to taste all those fresh veggies and fruit as well as maximize your intake of SuperNutrients.