# Nutrition Type Identifiers Type identifiers used for tracking diet and nutrition. ## Discussion Nutritional data can be broadly categorized into two main groups: - Macronutrients consumed in large quantities, such as fats, carbohydrates, and proteins. - Micronutrients consumed in smaller quantities, such as vitamins and minerals. HealthKit also provides type identifiers for nutrition-related items that users may want to track, like water or caffeine. You do not need to track all nutritional information; you can focus on the items of interest to your users. In general, the data from nutrition labels is a good place to start. Many countries and regions require a nutrition label on packaged food. While the contents of these labels vary from one country or region to another, they typically include the nutritional data represented by these properties: - [`dietaryEnergyConsumed`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryEnergyConsumed) - [`dietaryFatTotal`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFatTotal) - [`dietaryFatSaturated`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFatSaturated) - [`dietaryCholesterol`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryCholesterol) - [`dietaryCarbohydrates`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryCarbohydrates) - [`dietaryFiber`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFiber) - [`dietarySugar`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietarySugar) - [`dietaryProtein`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryProtein) - [`dietaryCalcium`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryCalcium) - [`dietaryIron`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryIron) - [`dietaryPotassium`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryPotassium) - [`dietarySodium`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietarySodium) - [`dietaryVitaminA`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryVitaminA) - [`dietaryVitaminC`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryVitaminC) - [`dietaryVitaminD`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryVitaminD) ### Combine Nutritional Samples Macronutrient identifiers can be thought of as a hierarchy. The [`dietaryEnergyConsumed`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryEnergyConsumed) identifier represents the total amount of energy from all fats, carbohydrates, and protein. You can provide a detailed breakdown using the [`dietaryFatTotal`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFatTotal), [`dietaryCarbohydrates`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryCarbohydrates), and [`dietaryProtein`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryProtein) identifiers. Fats can be further separated into [`dietaryFatMonounsaturated`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFatMonounsaturated), [`dietaryFatPolyunsaturated`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFatPolyunsaturated), and [`dietaryFatSaturated`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFatSaturated). Carbohydrates can be identified as [`dietaryFiber`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFiber) and [`dietarySugar`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietarySugar). Unless your app is very focused (for example, tracking only sugar or saturated fat), always provide the total data ([`dietaryFatTotal`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFatTotal) or [`dietaryCarbohydrates`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryCarbohydrates)), and then optionally provide the more detailed information using the subcategories. You do not need to provide data for all of the subcategories; however, the sum of the subcategory sample values should be equal or less than the total sample’s value. > Note: > The ``doc://com.apple.healthkit/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryEnergyConsumed`` samples are handled differently than the other macronutrients. While it can be seen as a total value, ``doc://com.apple.healthkit/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryEnergyConsumed`` is measured in calories or kilojoules, while the individual macronutrient samples are measured by mass. ## Topics ### Essentials [`HKCorrelationTypeIdentifierFood`](/documentation/HealthKit/HKCorrelationTypeIdentifier/food) Food correlation types combine any number of nutritional samples into a single food object. [`HKMetadataKeyFoodType`](/documentation/HealthKit/HKMetadataKeyFoodType) The type of food that the HealthKit object represents. ### Macronutrients [`HKQuantityTypeIdentifierDietaryEnergyConsumed`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryEnergyConsumed) A quantity sample type that measures the amount of energy consumed. [`HKQuantityTypeIdentifierDietaryCarbohydrates`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryCarbohydrates) A quantity sample type that measures the amount of carbohydrates consumed. [`HKQuantityTypeIdentifierDietaryFiber`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFiber) A quantity sample type that measures the amount of fiber consumed. [`HKQuantityTypeIdentifierDietarySugar`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietarySugar) A quantity sample type that measures the amount of sugar consumed. [`HKQuantityTypeIdentifierDietaryFatTotal`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFatTotal) A quantity sample type that measures the total amount of fat consumed. [`HKQuantityTypeIdentifierDietaryFatMonounsaturated`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFatMonounsaturated) A quantity sample type that measures the amount of monounsaturated fat consumed. [`HKQuantityTypeIdentifierDietaryFatPolyunsaturated`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFatPolyunsaturated) A quantity sample type that measures the amount of polyunsaturated fat consumed. [`HKQuantityTypeIdentifierDietaryFatSaturated`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFatSaturated) A quantity sample type that measures the amount of saturated fat consumed. [`HKQuantityTypeIdentifierDietaryCholesterol`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryCholesterol) A quantity sample type that measures the amount of cholesterol consumed. [`HKQuantityTypeIdentifierDietaryProtein`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryProtein) A quantity sample type that measures the amount of protein consumed. ### Vitamins [`HKQuantityTypeIdentifierDietaryVitaminA`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryVitaminA) A quantity sample type that measures the amount of vitamin A consumed. [`HKQuantityTypeIdentifierDietaryThiamin`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryThiamin) A quantity sample type that measures the amount of thiamin (vitamin B1) consumed. [`HKQuantityTypeIdentifierDietaryRiboflavin`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryRiboflavin) A quantity sample type that measures the amount of riboflavin (vitamin B2) consumed. [`HKQuantityTypeIdentifierDietaryNiacin`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryNiacin) A quantity sample type that measures the amount of niacin (vitamin B3) consumed. [`HKQuantityTypeIdentifierDietaryPantothenicAcid`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryPantothenicAcid) A quantity sample type that measures the amount of pantothenic acid (vitamin B5) consumed. [`HKQuantityTypeIdentifierDietaryVitaminB6`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryVitaminB6) A quantity sample type that measures the amount of pyridoxine (vitamin B6) consumed. [`HKQuantityTypeIdentifierDietaryBiotin`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryBiotin) A quantity sample type that measures the amount of biotin (vitamin B7) consumed. [`HKQuantityTypeIdentifierDietaryVitaminB12`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryVitaminB12) A quantity sample type that measures the amount of cyanocobalamin (vitamin B12) consumed. [`HKQuantityTypeIdentifierDietaryVitaminC`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryVitaminC) A quantity sample type that measures the amount of vitamin C consumed. [`HKQuantityTypeIdentifierDietaryVitaminD`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryVitaminD) A quantity sample type that measures the amount of vitamin D consumed. [`HKQuantityTypeIdentifierDietaryVitaminE`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryVitaminE) A quantity sample type that measures the amount of vitamin E consumed. [`HKQuantityTypeIdentifierDietaryVitaminK`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryVitaminK) A quantity sample type that measures the amount of vitamin K consumed. [`HKQuantityTypeIdentifierDietaryFolate`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryFolate) A quantity sample type that measures the amount of folate (folic acid) consumed. ### Minerals [`HKQuantityTypeIdentifierDietaryCalcium`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryCalcium) A quantity sample type that measures the amount of calcium consumed. [`HKQuantityTypeIdentifierDietaryChloride`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryChloride) A quantity sample type that measures the amount of chloride consumed. [`HKQuantityTypeIdentifierDietaryIron`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryIron) A quantity sample type that measures the amount of iron consumed. [`HKQuantityTypeIdentifierDietaryMagnesium`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryMagnesium) A quantity sample type that measures the amount of magnesium consumed. [`HKQuantityTypeIdentifierDietaryPhosphorus`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryPhosphorus) A quantity sample type that measures the amount of phosphorus consumed. [`HKQuantityTypeIdentifierDietaryPotassium`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryPotassium) A quantity sample type that measures the amount of potassium consumed. [`HKQuantityTypeIdentifierDietarySodium`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietarySodium) A quantity sample type that measures the amount of sodium consumed. [`HKQuantityTypeIdentifierDietaryZinc`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryZinc) A quantity sample type that measures the amount of zinc consumed. ### Hydration [`HKQuantityTypeIdentifierDietaryWater`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryWater) A quantity sample type that measures the amount of water consumed. ### Caffeination [`HKQuantityTypeIdentifierDietaryCaffeine`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryCaffeine) A quantity sample type that measures the amount of caffeine consumed. ### Ultratrace Minerals [`HKQuantityTypeIdentifierDietaryChromium`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryChromium) A quantity sample type that measures the amount of chromium consumed. [`HKQuantityTypeIdentifierDietaryCopper`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryCopper) A quantity sample type that measures the amount of copper consumed. [`HKQuantityTypeIdentifierDietaryIodine`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryIodine) A quantity sample type that measures the amount of iodine consumed. [`HKQuantityTypeIdentifierDietaryManganese`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryManganese) A quantity sample type that measures the amount of manganese consumed. [`HKQuantityTypeIdentifierDietaryMolybdenum`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietaryMolybdenum) A quantity sample type that measures the amount of molybdenum consumed. [`HKQuantityTypeIdentifierDietarySelenium`](/documentation/HealthKit/HKQuantityTypeIdentifier/dietarySelenium) A quantity sample type that measures the amount of selenium consumed. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)