Nutrient

Calcium

Established research area

The main mineral in bones and teeth, also involved in muscle and nerve function. Found in dairy, tofu, sardines, and leafy greens.

Commonly noted

Commonly noted: Calcium is the most abundant mineral in the body; it is stored in bones and teeth, which it helps build and maintain, and it also supports normal muscle and nerve function.
Low intake: Low calcium intake over time is commonly discussed in relation to weaker, more fragile bones.
Higher intake: Very high calcium from supplements is commonly discussed in relation to constipation and kidney stones; the commonly cited upper intake level for adults 19–50 is 2,500 mg a day.

Source: NIH ODS

Reference intakes

General reference figures for a typical adult — not a personal target or a claim of need.