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2 Types Of Salad Dressing Nutritionists Say Can Increase Belly Fat And Inflammation

December 22, 2025 by Faith Geiger

 
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Salads are often seen as the ultimate healthy meal—but the ingredients you add to your meal can certainly change that. Salad dressings, in particular, could be sabotaging your weight loss goals by packing in excess calories, unhealthy fats, and inflammatory ingredients.

Nutritionists warn that some of the most popular creamy dressings are the biggest offenders, often made with processed oils, added sugars, and high sodium levels that can trigger inflammation and contribute to weight gain. Ranch dressing and thousand island dressing, in particular, are major culprits. Learn more about the risks of each below.

1. Ranch Dressing

Ranch dressing may seem innocent as it is often associated with vegetable sticks, but it’s full of unhealthy fats, sodium, and even added sugars. It primarily contains unhealthy fats, which can slow down metabolism if consumed in excess.

"Ranch is considered a dressing that can boost any meal, though it does not come scot-free of calories, sodium, and bad fats," Michael O. McKinney, MD, physician and nutrition expert from Healthy Outlook, notes. "Practice and convenience of using ranch dressing regularly would bring about added weight and metabolic slowdown resulting from what one can't control in terms of caloric intake and qualitative intake of processed oils and fats. There is also sodium, which causes water retention and bloating, making matters worse for metabolism," he adds.

If you love mixing flavor into your salads but want to avoid the hidden fats and calories, don’t worry—there are healthier options that are just as delicious!

2. Thousand Island Dressing

Thousand Island dressing can contribute to belly fat and inflammation due to its high calorie, fat, and sugar content. It's typically made from ingredients like mayonnaise, ketchup, and sugar, which are calorie-dense and contain significant amounts of unhealthy fats, particularly saturated fats.

"This dressing is not only packed with calories due to its high-fat content, but the kind of fat it carries can be a concern," registered dietitian Catherine Gervacio says, noting that it's "high in saturated fat, which is known to increase the bad cholesterol in the body."

She adds, "Excessive saturated fat intake is associated with insulin resistance, which can lead to fat storage, commonly in the belly area."

Simple options like a homemade vinaigrette or Greek yogurt-based are a great way to get that creamy texture without all the fat.

Citrus-based dressings can also be a refreshing choice! Just squeeze some lemon, lime, or orange into olive oil or honey.

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