From carb-free to low-carb, to whole and empty carbs, it’s hard to know what it all means.

The main purpose of carbs in the diet is to provide energy as your body’s main fuel source. The carbs plus the amount of insulin you have in your body determine your blood sugar levels and have a big impact on how you feel. Whether you’re trying to lose weight or simply balance your blood sugar, carbs play a big role.

Know the three types

There are three main types of carbohydrates in food: starches, sugars and fiber. Starches—or complex carbohydrates—include starchy vegetables, dried beans and grains. Sugars include those naturally occurring (like in fruit) and added (like in a cookie). And fiber comes from plant foods vs. animal products like eggs, meat or fish. Learn more about carbohydrates.

Counting carbs

Chances are you’ve seen the “total carbohydrate” info on a label. This is the number you need for counting carbs. And for foods without a label, like fruits and vegetables, you can estimate the carbohydrate with the help of online tools. Trust us, you’ll be an expert in no time. Get started with carb counting.