Beef, composite of trimmed retail cuts, separable lean and fat, trimmed to 1/8" fat, all grades, raw (from Database)

Beef, composite of trimmed retail cuts, separable lean and fat, trimmed to 1/8" fat, raw, represents a standardized collection of muscle cuts from cattle that have been trimmed to remove most external fat but retain both lean and intramuscular fat. In the United States, beef cuts are classified and prepared according to USDA specifications to ensure consistency in nutrient content and culinary performance. These composites typically include a mix of retail cuts from the round, loin, sirloin, chuck, and other primal sections of the carcass. The practice of trimming to 1/8" fat reflects consumer and industry demand for leaner meat with less visible external fat while preserving flavor and texture, balancing taste and nutritional quality. USDA nutrient profiling of composite beef aims to represent average retail offerings rather than specific individual cuts like ribeye or tenderloin, providing data that health professionals and consumers can use to assess dietary contributions. Historically, cattle domestication dates back thousands of years, with beef becoming a central protein source in many cultures, particularly in Western diets. Over time, beef production has shifted with breeding, feeding, and processing improvements to emphasize consistency, food safety, and nutritional optimization. Today’s beef composites represent a range of cattle breeds and feeding regimens, including grain‑fed and grass‑fed systems, each influencing fat profile and micronutrient composition. Being unprocessed and raw, the composite cuts provide a base reference used by chefs, nutritionists, and researchers to quantify the nutrient supply of beef before any cooking method is applied. Cooking will alter weight and nutrient density (e.g., water loss concentrates nutrients), but the raw composite serves as a benchmark for dietary analysis.

The nutrition profile of raw beef trimmed to 1/8" fat reveals its role as a dense source of high‑quality protein and essential micronutrients. Per 100 g, this cut offers ~210–255 kcal, governed largely by its 20 g of complete protein and ~14 g of fat. The protein in beef contains all essential amino acids necessary for tissue repair, immune function, and enzyme synthesis. Complete proteins like beef deliver leucine, isoleucine, and valine (branched‑chain amino acids) that are particularly effective at stimulating muscle protein synthesis, which is vital for athletes, older adults, and any individuals seeking muscle maintenance. Beef’s macronutrient distribution—0 g carbohydrates, moderate fat (~14 g), and rich protein (~20 g)—also makes it compatible with low‑carbohydrate diets like keto and paleo. The fatty acid profile includes ~6 g saturated fats and monounsaturated fats, with trace amounts of polyunsaturated fats. While saturated fats have been traditionally scrutinized in heart health research, current evidence suggests that overall dietary patterns and total saturated fat intake matter more than individual food sources when evaluating cardiovascular risk. In terms of micronutrients, lean beef is a significant source of heme iron (~1.7 mg per 100 g)—a form of iron more readily absorbed than plant non‑heme iron. This is crucial for preventing iron‑deficiency anemia, especially in populations with increased iron needs (e.g., menstruating individuals). Beef also provides zinc (~4 mg), a micronutrient essential for immune function, DNA synthesis, and wound healing, and selenium (~23 µg), which plays a role in antioxidant defense. Vitamin B12 (~1.5 µg) is another standout nutrient; it is involved in neurologic function and red blood cell formation and is naturally present only in animal products. Additionally, B vitamins like niacin and B6 support energy metabolism and neurotransmitter synthesis. Trace minerals like copper and magnesium further contribute to metabolic pathways. Importantly, the lack of carbohydrates and dietary fiber means beef does not influence blood glucose directly, making it a stable energy source without impacting post‑meal glycemic responses. However, pairing beef with fiber‑rich vegetables is often recommended to balance meals and promote gut health. In comparison to other popular protein sources like poultry or fish, beef provides higher levels of heme iron and zinc, but can be higher in saturated fat depending on the cut and preparation. Choosing leaner composite cuts and trimming external fat before cooking helps moderate total fat intake without compromising nutrient density.

Beef—and particularly lean, unprocessed cuts like the composite trimmed to 1/8" fat—can contribute valuable nutrients with evidence supporting specific health outcomes when consumed as part of a balanced diet. First, the high‑quality protein in beef supports muscle mass and strength. Systematic reviews of randomized controlled trials have found that beef’s amino acid content, especially branched‑chain amino acids, can positively influence muscle maintenance and physical function, particularly in older adults, though more research is needed in healthy populations above age 50. Protein intake distributed throughout the day also supports satiety and may help with weight management by reducing overall calorie intake when meals are balanced. Second, the heme iron in beef is one of the most bioavailable forms of iron. Iron is essential for oxygen transport via hemoglobin and for preventing anemia. In populations susceptible to iron deficiency—such as menstruating women and vegetarians incorporating some animal protein—beef can play a role in preventing iron‑deficiency anemia. Third, zinc and vitamin B12 are abundant in lean beef. Zinc is integral to immune system activity, wound repair, and DNA synthesis, while B12 is crucial for neurologic function and red blood cell production. Deficiencies in B12 can lead to pernicious anemia and neurologic impairment, making animal proteins like beef important for at‑risk groups. Fourth, beef contributes selenium, an element central to antioxidant enzymes (e.g., glutathione peroxidase), which has downstream effects on reducing oxidative stress and supporting thyroid hormone metabolism. Emerging studies on unprocessed red meat consumption and cardiovascular risk factors indicate that modest intake of lean beef does not significantly worsen lipid profiles or blood pressure in controlled settings, though individual responses vary. The overall data suggests that lean, unprocessed beef can fit within a health‑promoting diet when portioned sensibly and paired with plant‑forward foods to supply fiber, antioxidants, and phytonutrients. Conclusively linking beef intake to clinical outcomes like disease prevention is complex due to confounding dietary patterns, but its provision of essential nutrients—especially those hard to obtain from plant‑only diets—underscores its nutritional value.

Source: USDA FoodData Central (FDC ID: 169483)