10 'Healthy' Things That Aren't

Extra Light Olive Oil
Olive oil is both delicious and nutritious, but it is a high-calorie addition to foods and should be used sparingly. ŠiStockphoto/Thinkstock

Olive oil contains monounsaturated fats, a type of fat associated with a lowered risk of heart disease, type 2 diabetes and some cancers when you include it in an otherwise healthy diet.

Did you know that extra light olive oil isn't "light" like the light we talk about when we're cutting back fats, though? Extra light in this instance refers to how processed the oil is, and extra light olive oil is one of the most refined olive oils you'll find -- you'll know it among other types of olive oils because it is the lightest in color and has the mildest flavor. Pale and buttery or green and fruity, olive oil is still oil, and every tablespoon of it contains 120 calories.