Beef tendon is a highly nutritious, low-calorie food that delivers an exceptional amount of protein and collagen with very little fat. At roughly 146 calories per 100 grams, it’s leaner than most cuts of beef while offering unique benefits for joints, skin, and connective tissue that regular muscle meat can’t match.
Nutritional Profile of Beef Tendon
Beef tendon is almost pure protein. In a 100-gram serving, about 96% of the macronutrient content is protein, with around 4% fat and essentially zero carbohydrates. That 146-calorie count puts it well below lean sirloin (about 200 calories per 100g) and far below fattier cuts like ribeye. If you’re looking for a high-protein food that won’t blow your calorie budget, tendon is one of the most efficient options in the meat aisle.
The protein in tendon is structurally different from what you get in a steak or chicken breast, though. Most of it comes in the form of collagen rather than the complete muscle proteins found in standard cuts. This distinction matters for how your body uses it, and it’s what makes tendon particularly interesting for joint and skin health.
Why the Collagen in Tendon Matters
Collagen makes up over 80% of tendon’s dry weight, and the dominant form is type I collagen, the same type found in your own skin, bones, and tendons. Smaller amounts of type III collagen are also present. When you eat beef tendon, your digestive system breaks this collagen down into smaller peptides and amino acids that enter your bloodstream and can accumulate in tissues like cartilage and skin.
The amino acid profile is what sets tendon apart from other protein sources. Analysis of bovine tendon collagen shows it contains about 33% glycine, 12% proline, and 11% hydroxyproline. You won’t find this ratio in chicken breast, eggs, or whey protein. Glycine plays roles in sleep regulation, gut lining repair, and the production of your body’s own collagen. Proline and hydroxyproline are building blocks your body specifically needs to maintain cartilage, tendons, and skin elasticity. Muscle meat provides some of these amino acids, but nowhere near the concentration found in tendon.
Benefits for Joint Health
The connection between eating collagen and feeling it in your joints is backed by a growing body of clinical evidence. Collagen peptides from foods like tendon appear to reach joint tissues after digestion, where they stimulate the cells responsible for maintaining cartilage. In one study, participants who consumed 10 grams per day of hydrolyzed collagen for 24 weeks showed increased proteoglycan content in their knee cartilage, essentially a measurable improvement in cartilage quality.
For people with osteoarthritis, the results are encouraging. A randomized controlled trial found that a collagen-based supplement improved pain and function over six months, outperforming a standard regimen of glucosamine and chondroitin sulfate. Multiple studies in people without arthritis have also reported reduced joint discomfort during physical activity and improved mobility after consistent collagen intake over several months. The benefits seem to build gradually, with noticeable changes typically appearing around the 3- to 6-month mark of regular consumption.
Beef tendon delivers collagen in its native, unprocessed form rather than as an isolated supplement. During the long, slow cooking that tendon requires, the collagen partially breaks down into gelatin, which your body can absorb and use in much the same way as hydrolyzed collagen supplements.
Effects on Skin and Hair
Collagen-rich foods also benefit your skin from the inside out. A systematic review of oral collagen studies found that participants experienced a 12.5% increase in skin hydration between weeks 6 and 12 of regular intake. Elasticity improvements were even more dramatic: one clinical study measured a 38% improvement in skin elasticity after three months of daily collagen consumption.
These effects make sense given that type I collagen, the primary type in beef tendon, is also the main structural protein in human skin. As your body’s natural collagen production declines with age (starting in your mid-20s and accelerating after 40), dietary collagen provides raw materials that partially offset this loss. The glycine and proline from tendon are directly used in your body’s collagen-building process.
How Beef Tendon Compares to Other Proteins
Tendon fills a different nutritional niche than conventional protein sources. A chicken breast or lean steak gives you complete protein with all essential amino acids in balanced proportions, making them better choices for muscle building and general protein needs. Tendon’s collagen protein is rich in glycine and proline but low in certain essential amino acids like leucine and tryptophan, so it shouldn’t be your only protein source.
Think of tendon as complementary to muscle meat rather than a replacement. Eating a bowl of pho with beef tendon alongside other protein sources gives you the best of both worlds: the muscle-building amino acids from complete proteins and the joint- and skin-supporting amino acids from collagen. This is actually how tendon has been consumed for centuries in Chinese, Vietnamese, Filipino, and Korean cuisines, typically as one component of a varied meal.
Cooking Considerations
Beef tendon requires long cooking times, usually 3 to 4 hours of braising, simmering, or pressure cooking. This extended heat exposure is what transforms the tough, rubbery raw tissue into the soft, gelatinous texture prized in soups and stews. The process also breaks collagen into gelatin, making the nutrients more accessible to your digestive system.
Because tendon is so lean, the cooking liquid matters. Braising in bone broth adds even more collagen and minerals. Tendon absorbs the flavors of whatever it’s cooked in, which is why it works so well in richly spiced curries, aromatic pho, and soy-based braises. A pressure cooker can cut the cooking time down to about 45 minutes to an hour while achieving the same tender result.
Who Should Be Cautious
Beef tendon is high in protein, which means it does contain purines, compounds that break down into uric acid. If you have gout or are managing elevated uric acid levels, you may want to limit your portions and see how your body responds. The protein density of tendon (96% of its macronutrient content) means it’s more concentrated than many other cuts in this regard.
People with kidney disease who need to restrict protein intake should also account for tendon’s high protein content when planning meals. And while tendon is low in fat overall, the dishes it’s commonly prepared in (rich broths, saucy braises) can add significant calories depending on the recipe. The tendon itself isn’t the caloric concern, but the final dish might be.