Bone

animal part or sourcebone density conservation agent

What is it

Bone-based supplements include bone broth, bone meal, and bone broth concentrates derived primarily from beef, chicken, or fish bones. These products provide minerals (calcium, phosphorus, magnesium), gelatin and collagen peptides, and amino acids unique to connective tissue.

How it works

When bones are simmered for prolonged periods, collagen breaks down into gelatin, which yields amino acids including glycine, proline, hydroxyproline, and glutamine. Minerals (calcium, phosphorus, magnesium) are released into the broth, though calcium content of bone broth is typically modest compared with dairy or supplements. The gelatin and collagen peptides from bone broth may support gut barrier function in animal models, with glutamine and glycine specifically studied as nutrients for intestinal cells. Glycine has effects on sleep and may improve sleep quality at higher doses. Concentrated bone broth and bone meal provide larger amounts of minerals than typical broth servings. Bone meal is bone ground into a fine powder. It is a concentrated source of calcium, phosphorus, and trace minerals, though product quality and contamination concerns (heavy metals) require careful selection.

Evidence for 4 uses

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Joint and connective tissue support

Grade C

Moderate evidence

The collagen-derived amino acids in bone broth (glycine, proline) provide building blocks for connective tissue. Direct clinical evidence of bone broth for joint outcomes is limited; isolated collagen peptide studies show more consistent benefits.

Mineral supplementation

Grade C

Moderate evidence

Bone broth provides modest amounts of calcium, magnesium, phosphorus, and trace minerals. Mineral content is generally lower than calcium-rich foods like dairy.

Hydration and electrolytes

Grade C

Moderate evidence

Bone broth provides fluid, sodium, and minerals, useful for hydration during illness or recovery. The savory, warm presentation supports fluid intake when other foods are not appealing.

Gut health

Grade D

Mixed evidence

Bone broth contains gelatin and glutamine, which support intestinal cell function in animal and cell models. Specific human evidence for gut barrier benefits from bone broth is limited; mechanistic plausibility exists.

4 commercial forms

Bone broth (homemade or store-bought)

Traditional liquid form; mineral and amino acid content varies with simmering time.

Bones simmered for 8 to 48 hours yield a savory liquid with gelatin, minerals, and amino acids. Drunk as is or used as a cooking base.

Bone broth powder

Concentrated; convenient for shakes and recipes.

Dehydrated bone broth powder, often added to smoothies or hot water. Quality and protein content vary by manufacturer.

Bone broth protein

Higher protein content per serving than standard broth powder.

Marketed as a protein supplement with collagen and bone broth components. Provides 15 to 20 g protein per serving.

Bone meal

Highly concentrated calcium and minerals; contamination risk.

Ground bone powder used as a calcium supplement. Less common today due to heavy metal contamination concerns; choose only tested products.

Dosage

There is no RDA for bone-based supplements specifically. Bone broth servings are typically 240 to 480 mL daily as food. Bone broth concentrates and capsules vary by product (typically 5 to 15 g powder per serving). Bone meal calcium intake should be calculated against the calcium RDA (1,000 to 1,200 mg/day for adults; UL 2,500 mg/day).

When and how to take it

Bone broth and bone-derived supplements can be consumed any time of day. Some people take glycine-rich bone broth in the evening for potential sleep benefits. The amino acids and minerals are water-soluble; the small amount of fat from broth aids absorption of any fat-soluble nutrients present. Separate from absorption-sensitive medications by 2 to 4 hours.

Safety

Bone broth from quality sources is generally safe. The main concerns are heavy metal contamination (lead, cadmium) from poorly sourced animal bones, since bones accumulate environmental contaminants. Some studies have raised concerns about lead in bone broth, though levels vary by source. Bone meal can be a significant heavy metal source if not tested. People with porphyria or histamine intolerance may react to slow-cooked broths.

Who should be cautious

People with kidney disease should monitor mineral and protein intake. Those with histamine intolerance may react to prolonged broths. People with gout should be aware of moderate purine content in some bone broths. Pregnant women should choose tested products to avoid heavy metal exposure. Vegetarians and vegans avoid all bone-derived products.

Interactions

Bone-based supplements provide calcium and other minerals that can interact with certain medications. Calcium reduces absorption of tetracyclines, fluoroquinolones, bisphosphonates, and levothyroxine; separate by at least 2 to 4 hours. The high glutamate content of long-simmered broths may concern some individuals sensitive to MSG-like effects.

Frequently asked questions

Is bone broth as effective as collagen powder for joints?⌄

Most clinical evidence for joint benefits comes from isolated collagen peptide studies (10 to 15 g daily). Bone broth provides smaller amounts of collagen per serving, so collagen powder is typically more effective for joint-specific outcomes.

Should I worry about lead in bone broth?⌄

Bones can accumulate lead and other heavy metals. Choose broths from grass-fed, well-sourced animals. Commercial products from reputable brands often test for contaminants; ask manufacturers for testing data.

How much calcium is in bone broth?⌄

Calcium content of bone broth is generally modest, typically 5 to 50 mg per cup. Despite popular belief, bone broth is not a high-calcium food unless specifically fortified.

Can bone broth heal leaky gut?⌄

Bone broth contains amino acids (glutamine, glycine) that support intestinal cells in laboratory studies. Strong human clinical evidence that bone broth specifically heals 'leaky gut' is limited; it may be a supportive food but not a cure.

Is store-bought bone broth as good as homemade?⌄

Quality varies widely. Some commercial broths are simmered briefly and contain less collagen and minerals than homemade. Look for products simmered for 12+ hours, with high protein content per serving, and minimal added ingredients.

References

  • Bone (Wikidata) — Wikidata link

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Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you're pregnant, breastfeeding, on medications, or managing a chronic condition.