When people talk about the calories in food, what do they mean? A calorie is a unit of measurement—but it doesn't measure weight or length. A calorie is a unit of energy. When you hear something contains 100 calories, it's a way of describing how much energy your body could get from eating or drinking it.

KidsHealth from Nemours, https://kidshealth.org/en/kids/calorie.html ×

This number on a food label indicates how much fat is in a single serving of a food. Limit total fat to less than 25% to 35% percent of the calories you consume each day. All fats have 9 calories per gram.

WebMD, https://www.webmd.com/food-recipes/definitions-glossary

Usually solid at room temperature, saturated fats are found in animal products such as meat and milk, as well as in coconut and palm oil. Saturated fat is often used in foods to prevent rancidity and off flavors. No more than 5% to 10% of your total daily calories should come from saturated fat.

WebMD, https://www.webmd.com/food-recipes/definitions-glossary

Vital for building hormones and cell membranes. Your body makes most of the cholesterol it needs. Cholesterol is listed under the fat information on a nutrition label.

WebMD, https://www.webmd.com/food-recipes/definitions-glossary

This number on a food label indicates how many grams of carbohydrates are in a single serving of a food.

WebMD, https://www.webmd.com/food-recipes/definitions-glossary

Dietary Fiber supports digestive regularity, gut microbiome balance, and healthy blood sugar and cholesterol levels.

Xylitol is categorized as a sugar alcohol. Chemically, sugar alcohols combine traits of sugar molecules and alcohol molecules. Their structure allows them to stimulate the taste receptors for sweetness on your tongue. Xylitol is found in small amounts in many fruits and vegetables and is therefore considered natural. Humans even produce small quantities of it via normal metabolism.

https://www.healthline.com/nutrition/xylitol-101#what-it-is

Protein provides essential amino acids to support muscle repair, immune health, and overall metabolic function.

Calcium is an essential mineral needed for bone density, muscle contraction, nerve signaling, and overall structural support.

Iron is a vital mineral for oxygen transport, energy production, and red blood cell formation. Essential for preventing fatigue and anemia.

While sodium (commonly called salt) is vital for healthy nerves and muscles, most of us get too much salt in our diet, often from processed foods. Read food labels to help keep your sodium intake to 2,300 milligrams a day or less. Persons 51 and older, African Americans, or people who have hypertension, diabetes or chronic kidney disease should limit sodium to 1500 milligrams daily.

WebMD, https://www.webmd.com/food-recipes/definitions-glossary

Potassium is an essential mineral that supports fluid balance, muscle contraction, and nerve transmission.

L-Glutamine is a conditionally essential amino acid that supports gut health, muscle recovery, and immune function.