Carbohydrates are one of the three main nutrients found in foods and drinks, along with proteins and fats. They are molecules that contain carbon, hydrogen, and oxygen atoms in specific ratios. The primary function of carbohydrates is to provide the body with energy. During digestion, carbohydrates are broken down into glucose, which is then absorbed into the bloodstream and used by the bodys cells, tissues, and organs as a source of energy. Glucose can also be stored in the liver and muscles for later use.

There are three main types of carbohydrates: sugars, starches, and fiber. Sugars are the most basic form of carbohydrates and can be added to foods or found naturally in fruits, vegetables, and milk. Starches are complex carbohydrates made up of many simple sugars strung together, and they include bread, cereal, pasta, and certain vegetables. Fiber is a special type of carbohydrate that helps promote good digestive health and may lower the risk of certain diseases.

Its important to note that not all carbohydrates are created equal. The quality of carbohydrates in the diet is more important than the quantity. Healthy, whole grains such as whole wheat bread, rye, barley, and quinoa are better choices than highly refined white bread or French fries. The healthiest sources of carbohydrates are unprocessed or minimally processed whole grains, vegetables, fruits, and beans, which deliver vitamins, minerals, fiber, and a host of important phytonutrients. Unhealthier sources of carbohydrates include white bread, pastries, sodas, and other highly processed or refined foods, which contain easily digested carbohydrates that may contribute to weight gain and interfere with good health.