Bone broth is not high in protein. A typical cup contains roughly 6 to 10 grams, which is a fraction of what you’d get from a chicken breast (around 30 grams) or a scoop of protein powder (20 to 25 grams). The protein it does contain is mostly collagen, which is an incomplete protein, meaning it lacks some of the essential amino acids your body can only get from food.
How Much Protein Is Actually in Bone Broth
The protein content of bone broth varies widely depending on how it’s made. Research on bone soup preparation found that protein concentration increases significantly during the first eight hours of cooking, then plateaus. At ten hours of simmering, the concentration reached about 0.92 grams per 100 milliliters, which works out to roughly 2 grams per cup at the low end. Commercial bone broths that use more bones, longer cook times, or concentration techniques can push that number up to 10 grams per cup or slightly higher.
Several factors influence the final number: the ratio of bones to water, how small the bones are broken down, and total cooking time. A homemade broth simmered for just a few hours with a modest amount of bones will be protein-poor. A thick, gelatinous broth made with a high bone-to-water ratio and cooked for 12 to 24 hours will have more. If the broth jiggles like gelatin when refrigerated, that’s a sign more collagen has dissolved into the liquid.
Why Bone Broth Protein Isn’t the Same as Meat Protein
Nearly all the protein in bone broth comes from collagen, the structural protein in bones, tendons, and ligaments. When you simmer bones for hours, collagen breaks down into gelatin, which dissolves into the liquid. This gelatin is rich in a few specific amino acids, particularly glycine, proline, and glutamine, but it’s missing or very low in others your body needs.
Collagen is not a complete protein. It contains little to no tryptophan, one of the nine essential amino acids. This matters because protein quality is measured partly by whether a food delivers all the amino acids your body can’t make on its own. On the standard protein quality scale (PDCAAS), collagen and bone broth protein score a zero when evaluated in isolation, specifically because of the missing tryptophan. That doesn’t mean bone broth protein is useless. When eaten as part of a normal diet that includes other protein sources, the missing amino acids get filled in by everything else you eat. But it does mean bone broth alone is a poor choice if you’re trying to hit your protein goals.
Bone Broth vs. Protein Powder for Muscle Building
If you’re drinking bone broth hoping it will support muscle growth the way a protein shake does, the comparison isn’t close. Protein powders deliver more total protein per serving and contain all nine essential amino acids, including leucine, the amino acid most directly responsible for triggering muscle protein synthesis. While bone broth does contain some leucine, the amount is significantly lower than what you’d find in whey or other complete protein supplements.
Both bone broth and protein powder can contribute to muscle recovery, but protein powder has a much more direct effect on muscle development. Bone broth is better thought of as a nutrient-rich food with modest protein rather than a protein supplement.
What Bone Broth Does Offer
The real value of bone broth isn’t its protein count. The specific amino acids it provides, while not great for muscle building, serve other roles in the body. Glycine and proline are building blocks for connective tissue, including skin, cartilage, and tendons. Glutamine, a non-essential amino acid your body already produces, plays a role in gut lining maintenance.
Bone broth also provides minerals extracted from the bones during cooking, and it’s an easy-to-digest warm liquid that many people find soothing when they’re sick or recovering. These are genuine benefits, just not protein-related ones. If you enjoy bone broth, there’s no reason to stop drinking it. Just don’t count on it as a meaningful protein source in your diet. A cup of bone broth might give you 6 to 10 grams on a good day, which is roughly equivalent to one egg. For most adults aiming for 50 grams or more of protein daily, that’s a helpful addition but not a substitute for whole protein foods like meat, fish, eggs, or legumes.