No single broth earns the title of “healthiest” across the board, because each type delivers a different nutritional profile and the answer shifts depending on what your body needs. Bone broth brings amino acids linked to gut and joint support but falls short on minerals and collagen compared to its reputation. Chicken soup has a surprisingly well-studied role in respiratory infections. Mushroom and vegetable broths offer compounds you will not find in any animal-based option. The real story is less about crowning a winner and more about understanding what each broth actually provides, where the science is solid, and where the marketing has outpaced the evidence.
What Bone Broth Actually Contains
Bone broth’s main selling point is its amino acid content, and that part is real. When researchers have analyzed bovine bone broths, they have identified 17 amino acids along with dozens of volatile flavor compounds.1PubMed Central. Operational parameters and key characteristics of amino acids and flavor compounds profiles of bovine bone clear and white broths The amino acids that get the most attention are glycine, proline, hydroxyproline, and glutamine, because these are the building blocks your body uses to make collagen and to maintain the gut lining. So far, so good.
The problem is reliability. A study comparing bone broths made to a standardized recipe, commercial bone broths, and café-prepared varieties found enormous variation. The amino acids most relevant to collagen, specifically hydroxyproline, glycine, and proline, were significantly lower in bone broth than in a standard dose of collagen supplements used in research. Commercial bone broths scored even worse, falling below homemade versions across the board. The café-prepared broths had the highest amino acid levels of any bone broth tested, but even those did not match a supplement.2International Journal of Sport Nutrition and Exercise Metabolism. Bone Broth Unlikely to Provide Reliable Concentrations of Collagen Precursors Compared With Supplemental Sources of Collagen Used in Collagen Research In practical terms, the bone broth you buy at the store or simmer at home may contain a fraction of the collagen-related amino acids you think you are getting, and the amount changes depending on how it was made, what bones were used, and how long it cooked.
This does not mean bone broth is nutritionally empty. It still delivers meaningful amounts of protein and amino acids in a form that is easy to digest. But if you are drinking it specifically to support collagen production in your skin, joints, or tendons, the research suggests that standardized collagen supplements provide a far more predictable dose. Bone broth is better understood as a nutritious food rather than a targeted supplement.
The Mineral Myth
One of the most persistent claims about bone broth is that simmering bones for hours extracts calcium, magnesium, and other minerals into the liquid, making it a meaningful source of these nutrients. Multiple studies have tested this directly, and the results are consistently disappointing.
An analysis of essential and toxic metals in animal bone broths found that the minerals consumed per serving, including calcium, magnesium, iron, zinc, copper, and chromium, contributed less than 5% of the recommended daily intake on average.3PubMed Central. Essential and toxic metals in animal bone broths A separate study looking at broths from a wider range of recipes reached the same conclusion: the popular narrative that broths are a good source of calcium, copper, iron, and magnesium does not hold up. The calcium content in bone broth was minimal even compared to tap water.4European Food Research and Technology. Nutritional insights into broths in relation to elemental composition
This applies to all types of broth, not just bone broth. The liquid you end up with after simmering bones, meat, or vegetables simply does not pull enough minerals out of the raw ingredients to compete with actual food sources of those nutrients. A glass of milk or a handful of almonds will deliver far more calcium than a bowl of broth. If minerals are what you are after, broth is not the way to get them.
Chicken Soup and Respiratory Infections
Your grandmother was onto something. A well-known laboratory study tested traditional chicken soup, prepared with chicken, onions, sweet potatoes, parsnips, turnips, carrots, celery, parsley, salt, and pepper, for its effect on white blood cells called neutrophils. Neutrophils rush to the site of an infection and cause much of the inflammation you feel during a cold: the stuffiness, the swelling, the general misery. The researchers found that chicken soup significantly slowed neutrophil movement in a dose-dependent way, meaning more soup produced a stronger effect.5PubMed. Chicken soup inhibits neutrophil chemotaxis in vitro
The researchers proposed that this mild anti-inflammatory action could explain why chicken soup helps ease upper respiratory symptoms. It is worth noting that this was a laboratory study, not a clinical trial in sick people, and the team was not able to identify which specific ingredient in the soup was responsible. The effect seemed to come from the combination. Individually tested vegetables had varying effects, but the complete soup performed best.
This is one area where a full-spectrum broth, one that includes vegetables, herbs, and chicken rather than just bones, may have an edge. The synergy between ingredients appears to matter. A plain bone broth simmered from just bones and water would not replicate what was tested in this study.
Bone Broth and Gut Health
The case for bone broth’s benefit to your digestive system rests on its amino acid profile rather than its mineral content. A comprehensive review of animal and human studies found that bone broth contains amino acids including glutamine, glycine, proline, histidine, and arginine, along with minerals like calcium, phosphorus, potassium, magnesium, and zinc. These components were linked to enhanced gut health, reduced inflammation in the intestinal barrier, and improved intestinal barrier function, particularly in inflammatory bowel disease.6PubMed. Bone Broth Benefits: How Its Nutrients Fortify Gut Barrier in Health and Disease
Glutamine gets the most attention here. It is the primary fuel source for the cells lining your small intestine, and when those cells are damaged or inflamed, they burn through glutamine faster than usual. Glycine acts as a calming signal to the immune system and can help tamp down excessive inflammatory responses. Together, these amino acids may help maintain the tight junctions between intestinal cells that keep undigested food particles and bacteria from leaking into the bloodstream.
The caveat is familiar: the concentrations of these amino acids in any given batch of bone broth are unpredictable. Someone with active gut inflammation who is relying on bone broth as a therapeutic tool may get a helpful dose one day and a negligible dose the next. Bone broth is a reasonable addition to a gut-supportive diet, but it is not a prescription medication with a controlled dose.
Joint Health and Collagen Supplements
Collagen is the main structural protein in cartilage, tendons, and ligaments, and it is natural to wonder whether consuming it in broth form could support those tissues. Research has shown that hydrolyzed collagen, meaning collagen that has been broken down into small peptides, can reach joint tissues and may exert protective effects on cartilage.7PubMed Central. Collagen Supplementation for Joint Health: The Link between Composition and Scientific Knowledge That sounds like good news for bone broth drinkers, but there is an important distinction.
The collagen research that has shown joint benefits used hydrolyzed collagen supplements, not bone broth. These supplements go through an industrial process that breaks collagen into very small, highly absorbable peptides. Bone broth does contain collagen-related amino acids, but as noted earlier, the concentrations are much lower and far less predictable than what you would get from a supplement.2International Journal of Sport Nutrition and Exercise Metabolism. Bone Broth Unlikely to Provide Reliable Concentrations of Collagen Precursors Compared With Supplemental Sources of Collagen Used in Collagen Research The gelatin that forms when bone broth cools is partially broken-down collagen, but its peptides are larger and less standardized than those in a supplement.
If you enjoy bone broth and want whatever joint support it may provide, there is no harm in drinking it. But if you are managing an actual joint condition or recovering from a tendon injury and want to stack the deck in your favor, the evidence points more clearly toward hydrolyzed collagen supplements than toward broth.
Mushroom and Vegetable Broths
Plant-based broths bring a completely different set of compounds to the table. Mushroom broth in particular stands out because of beta-glucans, a type of fiber found in mushroom cell walls. Beta-glucans have been studied for both immunomodulatory and anti-inflammatory effects. Research on purified beta-glucans and mushroom extracts has demonstrated these effects in cellular and experimental models, and their potential clinical use has been tested in conditions ranging from recurrent respiratory infections to complications after major surgery.8PubMed Central. Edible Mushrooms and Beta-Glucans: Impact on Human Health
How much beta-glucan actually ends up in a broth depends heavily on preparation. Simmering whole or sliced mushrooms for a long time will extract more than a quick steep, and certain species like shiitake, maitake, and reishi are richer sources than common white button mushrooms. Mushroom broth also tends to be very low in calories and sodium compared to commercial bone broths, making it a good option for people watching their salt intake.
Vegetable broths made from onions, carrots, celery, garlic, and leafy greens provide potassium, some B vitamins, and a range of polyphenols depending on the vegetables used. They lack the amino acid profile of bone or meat broths, which means they are not going to support gut-lining repair or collagen synthesis the way an animal-based broth could. But for people who eat plant-based diets, or who simply want a light, low-calorie base for soups and grains, vegetable and mushroom broths have genuine nutritional merit that gets overlooked in the bone-broth hype cycle.
A practical approach for many people is to rotate between types. A mushroom-based broth one night for its beta-glucans, a chicken soup when you are fighting a cold, and bone broth when you want the amino acid support. No single broth covers all the bases.
Safety Concerns Worth Knowing About
Broth is generally safe for most people, but there are a few issues that deserve attention, especially if you drink it daily or in large amounts.
Lead in Bone Broth
Bones store lead that the animal absorbed during its life, and cooking them releases some of that lead into the liquid. A controlled study of organic chicken broth found that broth made from bones contained about 7 micrograms of lead per liter, while broth made from skin and cartilage hit about 9.5 micrograms per liter. Both were several times higher than the tap water used to make them, which measured 0.89 micrograms per liter.9PubMed. The risk of lead contamination in bone broth diets These concentrations are still quite low in absolute terms, and an occasional bowl of bone broth is unlikely to cause harm. But for people who drink bone broth every day, or who are pregnant, or who are giving it regularly to young children, the cumulative exposure is something to think about. Using bones from pastured animals and shorter cooking times may reduce lead extraction, though this has not been systematically studied.
Purines and Gout Risk
Meat-based and bone broths contain purines, which your body breaks down into uric acid. For most people this is not a problem, but for anyone with gout or hyperuricemia, high-purine foods can trigger flare-ups. Food-derived purines are a meaningful contributor to uric acid levels in the body, and detecting the purine content in foods has been identified as important guidance for dietary management of these conditions.10Food Frontiers. Guidelines for purine extraction and determination in foods Long-simmered bone broths and concentrated meat stocks tend to be higher in purines than quick vegetable broths. If you have a history of gout, vegetable or mushroom broths are a safer choice.
Oxalates in Vegetable Broths
Vegetable broths are not without their own concern. When you boil vegetables, oxalates leach from the food into the cooking water. Research has found roughly 100% recovery of the oxalate lost from vegetables in their cooking water.11PubMed. Effect of different cooking methods on vegetable oxalate content In other words, the oxalates that leave the vegetables end up in the broth. Oxalic acid consumption can contribute to kidney stone formation when excreted in urine.12Asia Pacific Journal of Clinical Nutrition. Oxalate content of foods and its effect on humans This matters most if you are making vegetable broth heavy on high-oxalate ingredients like spinach, beet greens, or Swiss chard and you have a history of calcium oxalate kidney stones. Sticking to lower-oxalate vegetables like carrots, celery, onions, and zucchini keeps this risk low.
How Preparation Changes Everything
One theme running through the research is that what you do in the kitchen matters as much as which type of broth you choose. The same bone broth recipe made by different people can have wildly different amino acid levels. Even when researchers controlled the recipe exactly, commercial versions lagged behind homemade ones.2International Journal of Sport Nutrition and Exercise Metabolism. Bone Broth Unlikely to Provide Reliable Concentrations of Collagen Precursors Compared With Supplemental Sources of Collagen Used in Collagen Research Café-prepared versions, which likely used more bones per batch and possibly longer cooking times, came out highest.
A few variables consistently affect nutrient extraction:
- Cooking time: Longer simmering (12 to 24 hours for bone broth) pulls more gelatin and amino acids into the liquid. But it also extracts more lead and purines, so there is a trade-off.
- Acidity: Adding a splash of vinegar or wine to the pot lowers the pH and helps dissolve minerals from bone. This is a traditional technique, though the mineral boost still falls well short of meeting daily needs.
- Bone type: Joints, knuckles, and feet contain more cartilage and therefore more collagen-related material than dense marrow bones like femur shafts. A broth made from chicken feet will gel much more firmly than one from a bare carcass.
- Commercial vs. homemade: Many store-bought bone broths are produced quickly at high volume and contain added flavors, salt, and thickeners that mask a thinner nutritional profile. If you want the amino acid benefits, homemade or carefully sourced small-batch products are more likely to deliver.
For vegetable and mushroom broths, roasting the ingredients before simmering concentrates their flavors and may increase the extraction of certain fat-soluble compounds. Dried mushrooms, especially shiitake, are often more concentrated in beta-glucans and umami compounds than fresh ones, making them a smart addition to any broth.
Sodium, Calories, and Everyday Use
Beyond the specific bioactive compounds, the practical nutritional profile of broth varies more than people expect. A cup of homemade bone broth typically runs between 30 and 80 calories, with most of that coming from protein and a small amount of fat. Commercial versions can be much higher in sodium, sometimes exceeding 800 milligrams per cup, which is a third of the daily limit most health guidelines recommend. Low-sodium versions exist but they often sacrifice flavor.
Vegetable broths tend to be the lightest option, coming in under 20 calories per cup with minimal protein. Mushroom broths are similarly low in calories but deliver more flavor depth per serving. If you are using broth as a daily hydration tool or as a base for other cooking, keeping an eye on the sodium label matters more than obsessing over which amino acids it contains. A broth you drink every day that pushes your sodium intake into unhealthy territory is not, on balance, the healthiest option for you regardless of its collagen content.
For people recovering from illness, dealing with poor appetite, or managing conditions where solid food is difficult, broth of any kind serves a real purpose: it provides hydration, electrolytes, and easy-to-absorb nutrients in a form the body accepts when nothing else sounds appealing. In that context, the “healthiest” broth is the one you will actually consume. A rich chicken soup with vegetables checks more nutritional boxes than a trendy bone broth you find unappealing and leave in the fridge.