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What’s the healthiest salad dressing to buy? Add to ...

The question: What’s the healthiest salad dressing to buy?

The answer: If you don’t have time to make your own salad dressing from scratch (which I recommend) there are many choices at the grocery store. But it’s important to read the nutrition label to be sure you’re getting a healthy fat and not too much sodium.

I don’t recommend fat-free dressings. Aside from the lack of flavour that’s typical of many of them, they can also rob you of antioxidants. That’s because oil in salad dressings helps the body absorb beta-carotene, lycopene and lutein, beneficial phytochemicals in salad greens. In fact, one study found that when people ate their salad with fat-free dressing, they absorbed almost none of these compounds.

Vinaigrette or creamy, all salad dressings are made with heart-healthy unsaturated vegetable oils. But some unsaturated oils are healthier than others. Salad dressings made with canola oil are a good choice because they contain alpha linolenic acid (ALA), an omega-3 fat that may protect from heart disease.

Some food companies have added other healthy oils such as flaxseed oil and hempseed oil, which increase the omega-3 fat content. Olive oil is also a healthy fat, but you won’t find it as often as canola oil in commercial products.

Many store-bought salad dressings contain too much sodium, as much as 400 to 500 milligrams in two tablespoons. (The nutrition numbers on most salad dressing labels reflect a two-tablespoon serving.) Look for brands with less than 300 milligrams of sodium a serving. Here’s a hint: Salad dressings with the lowest sodium numbers tend to be fruit flavoured.

Look at calories, too. A two-tablespoon serving of full-fat salad dressing can cost you anywhere from 90 to 180 calories. If you eat salad every day, choose a dressing that delivers no more than 100 calories a serving, which many oil and vinegar based dressings do.

And watch your portion size. Keep in mind if you use more that two tablespoons, you’ll need to multiply the numbers to see how many calories and how much sodium you’re consuming.

Send dietitian Leslie Beck your questions at dietitian@globeandmail.com. She will answer select questions, which could appear in The Globe and Mail and/or on The Globe and Mail website. Your name will not be published if your question is chosen.

The content provided in The Globe and Mail's Ask a Health Expert centre is for information purposes only and is neither intended to be relied upon nor to be a substitute for professional medical advice, diagnosis or treatment.

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