To understand what carbohydrates do, it helps to first understand what they actually are.
What Are Carbohydrates?
Along with proteins and fats, carbohydrates, also known as carbs, are one of the three primary macronutrients in the human diet and serve as the body’s main source of energy.
Carbohydrates from food are classified into three types: sugars, which are simple carbohydrates, and starches and fiber, which are complex carbohydrates.
For the body to function properly, it needs all three forms. Sugars and most starches are broken down into glucose once inside the body, which then circulates in the bloodstream and is used as fuel.
Fiber, on the other hand, is not digested in the same way. Insoluble fiber helps keep bowel movements regular, while soluble fiber helps lower LDL (bad) cholesterol levels and supports better blood sugar control.
What Do Carbohydrates Do for the Body?
While carbohydrates are primarily known as the body’s main energy source, fueling everything from physical movement to organ function to cognitive processes, their benefits extend further than that. A well-balanced carbohydrate intake supports:
- Glucose production, which is essential for the body to function at a cellular level
- Cardiovascular health, by helping reduce LDL cholesterol levels
- Digestive health, through the action of dietary fiber
- Physical performance, by providing readily available energy for exercise
- Mood regulation, as the brain relies heavily on glucose to function optimally
- Healthy body composition, since a balanced intake helps prevent excess fat accumulation
Which Foods Contain Carbohydrates?
To get the most out of your carbohydrate intake, both the quantity and the quality of the carbs you consume matter. The right choices will depend on which type of carbohydrate you need.
For sugars:
natural sources include fruits, milk, and dairy products. Foods with added sugars, such as candy, desserts, and soft drinks, also contain them, though these offer little nutritional value.For starches:
beans, chickpeas, starchy vegetables like potatoes, and grains such as rice and oats are excellent sources. Refined grains also contain starch but have been stripped of important nutrients, including B vitamins.For fiber:
whole grains, broccoli, apples, and seeds are all high in dietary fiber. Most processed or refined foods, by contrast, are low in fiber.Consuming all three types of carbohydrates is important, but making smart choices within each category matters just as much. Whole, unrefined grains are preferable to refined alternatives, and foods with added sugars are best kept to a minimum.
If you have questions about how many carbohydrates to consume daily or whether your current diet is providing the right balance, consulting a registered dietitian or nutritionist is a great first step.
ABC Medical Center’s Nutrition and Obesity Center offers specialized nutritional guidance. Contact us today!
Fuentes: MedlinePlus, EUFIC.org, CDC
