You always choose low-fat or fat-free salad dressing
They may be healthier on their own, but a 2012 Purdue University study shows that the lack of fat might make it more difficult for you to absorb your salad’s nutrients, making you lose some of the disease-fighting properties that the vegetables offer. Carotenoids, which are linked to combating cancer, heart disease, and vision loss, are more readily absorbed from veggies when paired with fat-based dressings. So while you’ll save on calories, slashing the veggies’ benefits isn’t worth it. What should you eat instead? The study found that monounsaturated fat-based dressings—those with avocado, olive oil, and canola oil—were most effective in nutrient absorption and limiting fat intake.