Manganese
Manganese is a trace mineral that functions primarily as a component of enzymes involved in bone formation, energy metabolism, and antioxidant defense. It’s also involved in the metabolism of carbohydrates, amino acids, and cholesterol. It works quietly and without much fanfare — not a mineral that produces noticeable effects when optimized, and not one that produces obvious symptoms when modestly low.
Deficiency is rare in people eating a varied diet because manganese is found in a wide range of plant foods — whole grains, nuts, seeds, legumes, and leafy greens are all solid sources. Tea is also a surprisingly concentrated source. It sits comfortably in the category of trace minerals that dietary variety covers without specific attention for most people.
The more relevant concern with manganese is actually on the excess side, particularly for people who supplement heavily with multiple products. Manganese accumulates in the body and chronically high intake — most realistic from supplements rather than food — can affect neurological function over time. It’s not a common problem but it’s worth knowing that more is not better with this one.
Reference Card
Mineral type: Trace mineral Pillar: Nourish
What it does for you
- Supports bone formation and development
- Component of antioxidant enzymes that protect cells from damage
- Involved in energy metabolism and the processing of carbohydrates and amino acids
Where to get it
- Whole grains, brown rice, oats, nuts, seeds, legumes, leafy greens, tea, pineapple, black pepper
Considerations
- Deficiency is rare in people eating varied diets — dietary variety covers manganese needs for most people without specific attention
- Found predominantly in plant foods — people eating a varied plant-rich diet are unlikely to fall short
- Chronically high intake from supplements accumulates and can affect neurological function — not a concern from food sources
Signs your intake might be low
- Bone density issues over time
- Deficiency severe enough to produce clear symptoms is rare in otherwise healthy people eating varied diets
Common myths
- Manganese supplements are beneficial for joint health — the marketing around manganese for joints significantly outpaces the evidence; getting it from whole food sources is sufficient and safer than supplementing it independently