Bone broth: health benefits and traditional recipe

Is shop-bought bone broth bland and devoid of benefits? Here is the surprise: this age-old preparation, simmered for hours, holds an unsuspected nutritional richness. Unlike quick versions, its slow cooking releases collagen, minerals (calcium, magnesium, phosphorus, silicon, sulphur) and amino acids such as glycine. Find out how this homemade broth, a health ally, soothes the gut flora, strengthens joints and bones thanks to glucosamine and chondroitin, and brings radiance back to the skin through a supply of protein for structure. Valued for good digestion, a boosted immune system and natural cell renewal, thanks to its remineralising and anti-inflammatory properties and its alkalising effect.

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1. What exactly is bone broth?
2. What is the nutritional composition of bone broth?
3. What are the health benefits of bone broth?
4. How do you make your own bone broth at home?
5. Does bone broth carry any risks or contraindications?

What exactly is bone broth?

An age-old preparation back in fashion

Bone broth is made by slowly cooking bones, marrow and cartilage for several hours. Practised for centuries, this process extracts nutrients such as collagen, minerals (calcium, magnesium, phosphorus) and amino acids. Historically used as the base for comforting dishes, it is also valued for its traditional benefits, particularly during convalescence. Unlike shop-bought stock, often loaded with salt and additives, the homemade version relies on raw ingredients, cooked for a long time to get the most out of their nutritional potential.

What is the difference from an ordinary broth or stock?

What sets bone broth apart is its cooking time. While an ordinary broth simmers for 2 to 3 hours, bone broth needs between 6 and 24 hours of slow cooking. This extra time releases collagen, minerals and amino acids from the connective tissue and bones. Adding cider vinegar helps extract the minerals. The result: a smooth texture, a jelly-like consistency when cold, and a unique nutrient concentration. Its high gelatine content may also support the gut lining, according to some sources, although unproven therapeutic effects cannot be confirmed.

What is the nutritional composition of bone broth?

Bone broth is made by slowly cooking bones, bone marrow and cartilage. This traditional preparation concentrates nutrients that are essential for health. Here is a closer look at its key components.

Collagen and gelatine: the star proteins

Collagen, abundant in bones and cartilage, turns into gelatine during cooking. This change gives the broth its smooth consistency. Collagen is the most abundant protein in the body, supporting the structure of skin, bones, tendons and ligaments. Once eaten, gelatine helps maintain the integrity of the gut lining.

A mine of minerals and amino acids

Nutrient	Main role in the body
Calcium, magnesium, phosphorus	Contribute to strong bones and teeth, and take part in hundreds of bodily functions (muscle contraction, metabolism).
Collagen / gelatine	Support the structure of skin, hair, nails and joints. Help maintain the integrity of the gut lining.
Glycine (amino acid)	Takes part in the production of antioxidants (glutathione) and aids digestion by regulating bile.
Glucosamine and chondroitin	Natural components of cartilage that help maintain joint health and may relieve joint pain.
Potassium, silicon, sulphur	Essential for cell function, for building connective tissue (tendons, ligaments) and for skin health.

On top of these nutrients, bone broth is alkalising, remineralising and supports the immune system. The glycine it contains aids digestion and liver detoxification. These properties make it a versatile food, traditionally used in soup and broth recipes. Quality bones, slow cooking and a moderate temperature are essential to extract all the benefits.

What are the health benefits of bone broth?

An ally for digestive and gut health

The gelatine in bone broth acts like a plaster for the gut lining. It repairs the walls by maintaining the tight junctions, which limits intestinal permeability. This stops toxins and undigested molecules from passing into the blood, reducing inflammation and the risk of autoimmune reactions.

At the same time, glycine helps the liver produce bile. This improves the digestion of fats and activates the regeneration of gut cells. Studies show that this synergy between gelatine and glycine supports specific diets such as the Paleo diet or the GAPS protocol.

Support for bones and joints

Joints benefit directly from the glucosamine and chondroitin duo. These components stimulate the synthesis of type II collagen and hyaluronic acid, strengthening cartilage and lubricating joints. Research indicates that this synergy reduces the expression of MMP-13, an enzyme that breaks down cartilage.

Minerals such as calcium, magnesium and phosphorus form the structural trio of bone. Magnesium, for example, activates the vitamin D needed to absorb calcium. This synergy explains why bone broth is recommended to help prevent osteoporosis and ease osteoarthritis.

Visible effects on skin, hair and nails

Collagen, turned into gelatine by cooking, makes up 75% of the skin. It stimulates the production of fibroblasts, improving elasticity and hydration. Clinical trials show that eating it regularly reduces wrinkle depth by 20% after 8 weeks.

Silicon and sulphur play a part in making keratin. The first strengthens the structure of hair by stimulating the synthesis of intermediate filaments. The second, as a component of methionine, helps prevent nail breakage and improves nail growth by 25% according to some studies.

An all-round boost for the body

• Immune system support: Glutamine, present in significant amounts, supports the production of white blood cells and reduces recurrent infections.
• Anti-inflammatory effect: Glycine blocks the NF-κB pathway, reducing the production of pro-inflammatory cytokines such as interleukin-1.
• Detoxification support: By activating glutathione synthesis, glycine detoxifies the liver and neutralises up to 30% more free radicals.
• Remineralising properties: The concentration of bioavailable minerals (calcium, magnesium, phosphorus) makes up for common shortfalls in modern diets.

How do you make your own bone broth at home?

Choosing your ingredients: the basis of quality

For a broth rich in nutrients, start by choosing quality bones. Favour bones from free-range or grass-fed animals, which guarantee a higher concentration of collagen. Marrow bones, beef trotters, chicken carcasses or veal bones are ideal.

Here are the essential ingredients for several litres of broth:

• 1 kg of good-quality bones (beef, chicken, veal…)
• Aromatic vegetables: 1 onion, 2 carrots, 2 sticks of celery
• 2 tablespoons of cider vinegar (helps extract the minerals)
• Herbs and aromatics: 2 cloves of garlic, 1 bunch of parsley
• Seasoning: 1 tsp of coarse salt, 1 tsp of black pepper

Adding cider vinegar is crucial for drawing the minerals out of the bones, without changing the final taste. The vegetables bring balanced flavours and fibre.

The bone broth recipe, step by step

Follow these steps for a smooth, nutritious broth:

1. Step 1: (Optional) Roast the bones in the oven at 180°C for 30 minutes for a deeper aroma.
2. Step 2: Place the bones in a large pot, cover with cold water and add the cider vinegar. Leave to stand for 30 minutes.
3. Step 3: Add the roughly chopped vegetables (except the garlic and parsley), the salt and the pepper.
4. Step 4: Bring to the boil, then turn the heat down. Skim off the foam for a clear broth.
5. Step 5: Simmer, covered, for at least 6 to 8 hours. Longer cooking (up to 24 hours for beef bones) optimises collagen extraction.
6. Step 6: Add the garlic and parsley for the last 30 minutes of cooking.
7. Step 7: Strain the lukewarm broth through a fine sieve to remove the solids.

Slow, gentle cooking preserves the nutrients. A broth that turns jelly-like once cooled indicates a good collagen content.

How do you store and use your broth?

Once cooled, the broth can be kept for 4 to 5 days in the fridge. The fat on the surface sets, making it easy to remove. To keep it for longer, pour the broth into ice cube trays, jars or freezer bags.

Use it in a variety of recipes: to drink like an herbal tea, as a base for soups, to cook cereals (rice, quinoa), or in sauces. Its collagen content strengthens bones, joints and skin, while providing essential minerals (calcium, magnesium, phosphorus).

Avoid shop-bought stock that is high in salt or additives. Homemade guarantees optimal nutritional quality, in line with age-old culinary traditions.

Does bone broth carry any risks or contraindications?

Bone broth, a traditional preparation appreciated for its nutritional virtues, sometimes raises legitimate questions about its safety. Here are the points to watch before adding it to your diet.

The question of heavy metals

During prolonged cooking, bones can release small amounts of heavy metals such as lead. A Taiwanese study (2017) measured these levels: the results show negligible amounts, in the order of a few micrograms per serving. The risk therefore remains very limited, provided you use quality bones. Choosing bones from organic or grass-fed animals reduces these traces further, giving a safe broth that is rich in nutrients.

Should you be wary if you are histamine intolerant?

Long cooking encourages the release of histamine, a substance naturally present in some foods. For sensitive people, this can cause reactions (flushing, headaches). Opt for shorter cooking (6 hours at most) or try small amounts first. Chicken broth, which is lower in histamine than beef broth, is a suitable alternative. This precaution lets you enjoy the nutritional benefits without upsetting your digestion.

Homemade vs shop-bought broth: an easy choice

Shop-bought broths, often overloaded with salt, sugar, starch and flavour enhancers, lose most of their virtues. Even organic versions remain low in nutrients, as the certification only guarantees farming standards, not richness in collagen or minerals. Homemade broth, made with quality bones and vegetables, remains the best option for controlling the ingredients and maximising what you get from it. A simple water filter and gentle cooking (6 to 24 hours) are enough to get the best out of it.

Bone broth, an age-old preparation rich in collagen, minerals and amino acids, combines benefits for digestion, joints and skin. Favour a homemade recipe with quality bones for an optimal intake. Despite its virtues, adapt how much you have to your needs, favouring moderation and the origin of the ingredients.

FAQ

What are the nutritional benefits of bone broth?

Bone broth is a true concentrate of nutrients. It supports gut health thanks to its gelatine content, which « repairs » the gut lining and reduces inflammation. For joints, compounds such as glucosamine and chondroitin relieve joint pain and maintain flexibility. For the skin, collagen and silicon improve skin elasticity and nail strength. It also strengthens the body’s natural defences and, thanks to glycine, aids liver detoxification by supporting the production of glutathione, a key antioxidant.

Which types of bone are best for homemade bone broth?

For a broth rich in collagen, choose bones containing connective tissue and cartilage. Marrow bones provide nourishing fats, while chicken feet and beef trotters are rich in gelatine. Poultry or fish carcasses make a quality stock. It is essential to choose bones from free-range animals, ideally organic, because the quality of the animal’s feed affects the quality of the nutrients extracted. The bones should come from animals not treated with antibiotics and fed naturally.

Which type of bone broth is richest in collagen?

Homemade bone broth is by far the richest in collagen, especially when made with beef bones, chicken feet and joints. Long cooking (12 to 24 hours) allows you to extract the maximum collagen. Cider vinegar added at the start of cooking improves the extraction of minerals and collagen. Shop-bought broths are low in collagen, unlike homemade versions. To maximise the yield, you can add a little animal skin or cartilage to the recipe.

At what times of day is it best to drink bone broth?

You can have bone broth at different times depending on the effect you want. In the morning on an empty stomach, it gives a gentle energy boost. Before bed, the glycine it contains promotes restful sleep. After exercise, it helps muscle recovery. During convalescence, it nourishes the body in a way that is easy to digest. It can also replace a light meal or accompany intermittent fasting thanks to its electrolytes. At a pinch, it can be worked into everyday cooking as a base for soups or for cooking cereals.

Does eating bone marrow have nutritional benefits?

Yes, bone marrow is a valuable source of nutrients. It contains beneficial fatty acids for the heart, antioxidants to protect cells, and B vitamins for energy. Rich in iron and zinc, marrow strengthens immunity. People suffering from fatigue or deficiencies can eat it regularly. To extract it easily, you can roast the bones in the oven, then scoop it out with a spoon after cooking. The melting marrow goes well with toasted bread or roasted vegetables.

Is bone broth good for liver function?

Yes, the glycine found in good quantity in bone broth supports the liver in its cleansing function. It stimulates the production of glutathione, an essential antioxidant for eliminating toxins. The broth also provides minerals (calcium, magnesium) that make the liver’s work easier. In periods of overwork, such as after dietary excess, it nourishes the liver cells. For an optimal detox effect, combine bone broth, cruciferous vegetables and enough fluids to boost the elimination of waste.

Why add cider vinegar when making bone broth?

Cider vinegar plays a key role in extracting minerals from the bones. Its acidity dissolves the calcium, magnesium and phosphorus trapped in the bone structure. Without vinegar, these nutrients remain largely inaccessible. Add 2 tablespoons of cider vinegar per litre of water at the start of cooking, together with the bones and cold water. This simple addition turns an ordinary broth into a true source of bioavailable mineral salts.

How do you extract collagen effectively when making bone broth?

To get the most collagen, cook for a long time (12-24 hours) at a very gentle simmer. Bones rich in cartilage (chicken feet, joints) release more collagen. Cider vinegar makes extraction easier. Prolonged cooking turns collagen into gelatine, recognisable by the jelly-like consistency of the cooled broth. For a broth with less gelatine, you can cook for 6-8 hours for less degraded collagen. A constant temperature and the absence of a rolling boil preserve the nutrients.

Which vegetables should you choose to go with bone broth?

The classic vegetables for bone broth are onion, carrots and celery, forming the basic aromatic trio. Garlic and parsley are added at the end of cooking to preserve their benefits. You can also add mushrooms for a deeper stock, ginger for its anti-inflammatory properties, or fresh herbs for more freshness. Root vegetables such as parsnip or leek add roundness to the flavour. Avoid very leafy vegetables, which could make the broth bitter. Herbs such as bay or thyme round it off harmoniously.

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