Nutrient

Manganese

Established research area

A trace mineral involved in bone formation, metabolism, and antioxidant enzymes. Found in whole grains, nuts, legumes, and tea.

Commonly noted

Commonly noted: Manganese is a trace mineral the body uses in bone formation, in the metabolism of carbohydrates and protein, and as part of an antioxidant enzyme; whole grains, nuts, legumes, leafy greens, and tea are common sources.
Low intake: A manganese shortfall is very rare because the mineral is widespread in plant foods, and is not a common topic on a typical diet.
Higher intake: Very high manganese, mostly from supplements or workplace dust exposure, is commonly discussed in relation to nerve effects; the commonly cited upper intake level for adults is 11 mg a day.

Source: NIH ODS

General reference figures for a typical adult, not a personal target.