Essential and toxic metals in animal bone broths

Hsu DJ, Lee CW, Tsai WC, Chien YC · Food & Nutrition Research

Calcium and magnesium content was under 5% of daily recommended levels per serving even after long acidified cooking; lead and cadmium were a few micrograms per serving, judged a minimal ingestion risk. Contradicts the Monro lead alarm and the 'mineral-rich' marketing claim simultaneously.

Population

Laboratory analysis of home-made and commercial animal bone broths (no human subjects)

Intervention

Broths varying cooking time, acidity, bone type, and species; Ca, Mg, Cu, Al, Pb, Cd measured

Limitations

Composition study only; no biological outcomes; broth recipes vary enormously so generalization is limited.