Manganese
Intake model: one reported food record, food date unconfirmed. References: man aged 19–30. How to read the references.
No change indicated. The estimated food provision exceeds the AI; no manganese-directed addition follows, and clinical status remains unassessed.
Linked eating record; usual intake and clinical status unestablished · Reviewed 2026-10-10
Intake confidence: Moderate. Quantity confidence: Limited. Body status: Unassessed.
FDA values describe food labels.
Manganese
5.4 mg counted from food.
| Recommended intake | Upper reference | Food label reference |
|---|---|---|
| 2.3 mg (AI) US National Academies · Food and oral supplements | 11 mg (UL) US National Academies · Food and oral supplements | 2.3 mg (DV) FDA · Adults and children 4+ |
Other authority and form-specific references
- 8 mg/day (safe level)
EFSA · Total dietary manganese for adultsNOT a UL. Based on observed high background dietary exposure, not an established toxicity threshold.
Food contributions and uncertainty
Values are available for 13 of 13 recorded foods. 1 contribution(s) use an incomplete recipe or comparator. Product identity and portion assumptions still limit accuracy.
The saved portion/recipe scenarios span 5.2–5.6 mg. This is a sensitivity range, not a confidence interval; uncertain food composition and unreported foods can fall outside it.
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| Food | Model portion | Contribution | Source basis |
|---|---|---|---|
| Trader Joe's Organic basmati rice frozen | 283 g reported | 1.3 mg | Generic USDA comparator |
| Banana | 472 g reported | 1.3 mg | Generic USDA comparator |
| Raspberries | 170 g assumed | 1.1 mg | Generic USDA comparator |
| Raw English walnuts | 15 g assumed | 0.51 mg | Generic USDA comparator |
| Trader Joe's Organic raw almonds | 15 g estimated | 0.33 mg | Generic USDA comparator |
| Hass avocado | 150 g assumed | 0.21 mg | Generic USDA comparator |
| Large beefsteak tomato | 182 g assumed | 0.21 mg | Generic USDA comparator |
| Red bell pepper | 150 g assumed | 0.17 mg | Generic USDA comparator |
| Crown Prince Natural Skinless boneless sardines in olive oil | 80 g assumed | 0.09 mg | Generic USDA comparator |
| RT RT roast chicken meat and skin | 299 g estimated | 0.06 mg | Generic USDA comparator |
| Trader Joe's European style organic plain nonfat yogurt | 907 g reported | 0.05 mg | Generic USDA comparator |
| Navel orange | 140 g assumed | 0.04 mg | Generic USDA comparator |
Provisional or modeled zeros:
- RT RT chimichurri: Partial recipe estimate.
These are model inputs or current label declarations. They do not prove exact absence in the original package.
Role and the uncertainty behind an AI
Manganese is a cofactor for enzymes involved in metabolism, antioxidant defense and bone formation. The male adult US AI is 2.3 mg/day and UL is 11 mg/day from all sources. An AI is used because an RDA could not be established; a value below it would not diagnose inadequacy. Manganese status is difficult to assess, and many claimed disease benefits lack confirming human trials. NIH manganese fact sheet
What the current estimate contains
The latest total is about 5.41 mg, with selected-portion sensitivity 5.23–5.60 mg. Rice contributes about 1.34 mg, four bananas 1.27 mg, raspberries 1.14 mg, walnuts 0.51 mg and almonds 0.33 mg. These values mainly come from generic food composition.
The attention flag is No change indicated. These foods already provide manganese in the saved estimate, so a manganese-directed addition solves no demonstrated intake problem. The estimate is not a tissue measurement or an independent assurance about every exposure; drinking water and occupational sources are not quantified by this food log.
What the evidence does not justify
An enzyme's need for manganese does not imply that more manganese strengthens tendons or improves glucose control. NIH distinguishes animal findings from a lack of clinical trials establishing a manganese supplementation role in diabetes. The current research review therefore makes no recovery, antiaging or diabetes-treatment claim. NIH manganese health evidence
Manganese toxicity is particularly associated with unusual exposures, and impaired liver function changes elimination. Those contexts deserve their own assessment; they should not be inferred from eating raspberries and rice. NIH manganese excess-intake discussion
For this diet, keeping varied foods is sufficient as the practical decision. If tea or another new product becomes a daily habit, record it normally; do not buy it specifically to push manganese above the existing estimate.