Dietary Iron

  • Unitmg
  • SinceiOS 8.0 (2014)
  • KindQuantity

By PulsHealth. Updated

Research reviewed .

What does Apple Health iron intake record?

Dietary Iron is a cumulative mass quantity for the iron amount recorded as consumed. Amounts on this page are expressed in mg. One sample can represent a food portion, a supplement entry or a source-generated daily total; it is not necessarily a whole day. Apple defines this quantity.

Can an iron intake log show iron deficiency or anemia?

Dietary Iron records an entered intake amount. It does not measure hemoglobin, ferritin, iron stores or anemia. Food type, absorption, losses and clinical context matter, so a low app total is a reason to review logging coverage rather than a diagnosis. NIH distinguishes iron intake and iron status.

Does Apple Health distinguish heme and nonheme iron?

The numeric total does not carry that distinction by itself. Iron from different foods has different availability, and food descriptions may supply useful context when the source includes them. For supplements, check elemental iron on the label: the iron-containing compound or tablet can weigh more than the iron it provides. Confirm portions and avoid adding a supplement twice through two apps.

What you seeHow to read it
Iron in mgLogged elemental nutrient amount
Heme or nonheme sourceRequires food context; not identified by the number
Compound or tablet massNot equivalent to elemental iron
Ferritin or hemoglobinClinical measurements, not inferred from intake

How often is iron recorded?

The interval between entries reflects logging or synchronization, not nutrient absorption or a validated meal schedule. A midnight timestamp may be a daily summary, and multiple entries may have been added later. Review source, portion and duration before summing; importing the same meal from two apps can inflate a total. A day without entries is missing coverage, not zero intake.

How do vitamin C and menstrual records provide context?

Vitamin C can affect nonheme iron absorption, but co-logged quantities do not measure the amount absorbed. Menstrual records describe separately recorded context; they do not quantify iron loss. Comparisons require actual iron rows and appropriately aligned context, not just the presence of these related types.

What did the example-data investigation find?

The researched 365-day reporting window contained no raw iron samples and no stored iron aggregates. Recorded value ranges, unusually large entries, source-specific daily totals and logging gaps could not be measured. No empirical graph or nutrient-status conclusion is presented. Related measurements cannot supply an intake relationship without iron observations.

How can I make the log more useful?

Check nutrient units and serving count: 1 g = 1,000 mg, while 1 microgram = 0.001 mg. Keep compatible contributions within a source and state how many days have credible logs. Apple allows apps to write selected nutrition types, so another nutrient being present does not establish complete iron coverage. Review contributing Health sources after changing logging apps.

Does PulsHealth currently collect this type?

This HealthKit type is documented here but is not in the current PulsHealth sync catalog. The missing database rows therefore cannot establish whether Apple Health on the phone contains entries. Milligrams on this page are an explanatory display unit, not a promise of current sync support.

Understanding your records

Recording frequency, source and coverage affect what you can conclude from this data. Read the recording guide.

One record
Cumulative mineral mass logged as consumed; sample size can represent a portion or summary.
Frequency
Source-specific entry or synchronization timing; not ingestion frequency or absorption.
Context
Review food or supplement items and the declared iron amount; an intake log is distinct from an iron-status laboratory result.
Coverage and gaps
Missing or partial logs do not establish zero intake or nutrient deficiency.
Summaries
Sum compatible contributions within a source and reporting window after reviewing units, portions and duplicate imports; report logged-day coverage.
Metadata
Optional food descriptions may aid review. Numeric amounts alone cannot establish composition, absorption or completeness.

Recording guidance reviewed 2026-10-14

Technical details
IdentifierHKQuantityTypeIdentifierDietaryIron
SourceHealthKit
Aggregationcumulative
Availability
iOS 8.0 (2014)
watchOS 2.0 (2015)
Last updated: 2026-10-14

Related Metrics