Dietary Selenium

Dietary Selenium stores the amount of selenium recorded as consumed from food or supplements. Each entry contributes to a cumulative intake total. Apple's type definition uses mass units. This page's display unit is mcg; a nutrient amount is distinct from the weight of the food or tablet. It is not a blood concentration or a measurement of body stores.

Selenium is used in selenoproteins involved in processes including thyroid hormone metabolism. Food content can vary with soil and origin; Brazil nuts are a particularly variable source. An app's standard food value estimates the serving rather than measuring it. NIH's selenium review explains this variation.

A source-specific daily sum answers how much was recorded on that reporting day. It does not establish a complete diet. Keep the number of logged days visible and leave unrecorded days missing rather than filling them with zero. A population intake recommendation is a daily dietary planning value, not a normal range for a single sample.

Recording cadence follows the contributing app or manual log. Entries can represent servings, retrospective meals or an imported daily total. Several records saved together need not mean several doses were consumed simultaneously. Sample start and end times describe the source's interval; they do not independently verify ingestion time.

A late-night entry may simply be delayed logging. Investigate source behavior before assigning a meal time or combining records from different sources.

The 365-day reporting window contained no raw selenium samples, stored aggregates for this type. Ranges, outliers, logging intervals and empirical nutrient relationships were therefore unavailable. No measured distribution or graph is presented. Missing records do not establish zero intake or deficiency.

The current PulsHealth sync catalog does not include this identifier. A knowledge-base page documents a HealthKit type; it does not establish that the current app synchronizes it. This coverage limitation is separate from what may exist in Apple Health or another food app.

Iodine and selenium have different roles in thyroid biology. Their daily food logs can describe recorded intake patterns, but cannot measure thyroid function or show that supplementation caused a change. Keep food and supplement entries identifiable so a high total can be traced to its source.

Check that the app actually writes this nutrient to Apple Health, then inspect a known food or supplement entry. Retain serving counts, units and source information. Optional food metadata can help identify a contribution, but does not guarantee a complete meal or identify supplement chemistry. Apple's data-source controls explain how to review contributing apps. If an intake comparison raises a concern, establish logging completeness before interpreting it clinically.