Adults consuming 2,000 calories per day should have between 225 and 325 grams of carbohydrates, according to Mayo Clinic. The bloodstream absorbs sugars and starches from carbohydrates to create glucose. Insulin helps glucose enter the body's cells to provide energy.
Some foods contain healthier carbohydrates than others, notes Mayo Clinic. Fruits, vegetables, whole grains and low-fat dairy products are examples of such foods. However, some fruit and dairy products contain added sugar, which can contribute to weight gain and tooth decay. Adults consume approximately 320 calories in added sugar daily, states WebMD. Carbohydrate-based foods containing fiber offer vitamins and nutrients that support a healthy diet.