Collagen & Bone Broth

Food · Animal Foods · Red Meat

Connected to · 1

food source · 1

Calcium
Bone broth is often taken as a calcium soup, but tests find only low tens of milligrams of calcium per serving, under 5% of the daily need; it is not a reliable calcium source.
Mechanism · 2
Numbers · The calcium in a bowl
Hsu 2017 tested home-made and shop-bought bone and meat broths: each serving held only low tens of milligrams of calcium and magnesium, under 5% of the daily need. Simmering longer or adding vinegar to draw minerals out does not change the fact that it is not a reliable calcium source.
In practice · Look elsewhere for calcium
To get calcium in earnest, a glass of milk or a piece of gypsum-set firm tofu does far more than bone broth. Drink the broth as soup, but do not count it toward your calcium.

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The claim · drink collagen and you replace your own

EVIDENCEREVIEW 1

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Collagen you eat is broken down into amino acids and small peptides like any other protein, and it is not delivered intact to your face or your knees. The chapter on where swallowed collagen goes explains how the gut takes it apart.

Skin sags, joints ache, so drink collagen to put it back: the idea sounds tidy, but that is not how the body uses protein. Collagen powders, gummies, and bone broth promise to send collagen back to skin and joints, and even to repair the gut lining. The real questions are two: where does the collagen you swallow go, and which promises have evidence behind them?

Educational content, not medical advice — consult a clinician.

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