Beef, round, full cut, separable lean and fat, trimmed to 1/8" fat, select, raw

Beef, round refers to a large primal cut sourced from the hindquarters of cattle — specifically the rear leg and rump area — and is known for its lean profile compared to other beef sections such as rib or chuck. The round primal is subdivided into muscles like top round, bottom round, eye of round, and sirloin tip, each offering different textures and suitable culinary uses ranging from roasting to braising. Historically, beef has been a cornerstone of pastoral and agrarian diets dating back thousands of years. Human consumption of cattle meat became widespread with the domestication of Bos taurus around 8,000–10,000 BCE in regions of the Near East. Over time, beef production practices evolved to emphasize efficiency, food safety, and nutrient retention. Today, round cuts are prized for their relatively lean composition relative to other primal beef cuts, making them popular in diets where higher protein and moderate fat are desired. The term “select” in the USDA grading system indicates moderate marbling (intramuscular fat), generally resulting in beef that is leaner and less tender compared to higher grades like Choice or Prime. USDA FoodData Central classifies this specific food item under Foundation Foods as a raw cut trimmed to an approximate 1/8" fat layer, reflecting typical consumer preparation and commercial trimming standards. Because round muscles are heavily used for locomotion in cattle, the meat tends to be firm and lean, demanding appropriate cooking techniques — like low‑and‑slow braising or roasting — to optimize tenderness. Understanding the origin and variety of round beef helps consumers make informed culinary and nutritional choices, whether selecting cuts for lean protein, planning balanced meals, or adjusting preparation methods to preserve nutrient quality. Within culinary contexts, round beef is often used for pot roast, deli roast beef, and lean steak dishes. In many global cuisines, such as British, French, and American regional cooking, this cut's robust flavor and firm texture make it suitable for slow‑cooked stews, pressure‑cooked dishes, or sliced thin for sandwiches. Nutritionally, the beef round provides essential amino acids, B‑vitamins, iron, and zinc — nutrients fundamental to oxygen transport, muscle function, and immune response. This background situates beef round not just as a traditional food staple but as a versatile component of many dietary patterns.

The nutrition profile of raw beef round demonstrates it is a dense source of high‑quality protein and rich in multiple micronutrients. According to USDA FoodData Central, a 100 g raw portion contains 184 kcal, 20.56 g of protein, and 10.68 g of total fat, with 0 g carbohydrates — making it a nutrient profile dominated by protein and fats. Protein from beef is considered a complete protein source, providing all essential amino acids such as leucine (1.625 g/100 g), isoleucine (0.924 g), and valine (1.0 g), which are critical for muscle protein synthesis and metabolic health. The amino acid leucine, in particular, plays a regulatory role in the mTOR pathway, stimulating muscle protein synthesis more potently than other amino acids. This makes beef round especially useful for individuals focused on muscle maintenance or hypertrophy. Fats in beef round include 4.2 g saturated fat per 100 g, along with monounsaturated and polyunsaturated fats. While saturated fats have historically been associated with cardiovascular risk, current evidence suggests that the context of the overall dietary pattern matters. Nonetheless, moderation is advised for individuals managing heart disease risk. Beef round also contains cholesterol (62 mg/100 g) — a nutrient necessary for cell membrane integrity and hormone synthesis but one that should be considered alongside individual lipid profiles and dietary context. Among micronutrients, beef round is a valuable source of iron (2 mg/100 g), which is highly bioavailable heme iron — particularly important for preventing iron‑deficiency anemia, especially among women of reproductive age and endurance athletes. It also provides zinc (3.24 mg), essential for immune function and wound healing, and selenium (19.7 µg), a trace element involved in antioxidant defenses. Additionally, B‑vitamins such as vitamin B12 (2.82 µg) and vitamin B6 (0.47 mg) support neurologic function, red blood cell formation, and macronutrient metabolism. The absence of carbohydrates makes this cut suitable for low‑carbohydrate dietary patterns like ketogenic or Atkins–style diets. However, because beef does not contain fiber or vitamin C, pairing it with vegetables enhances both nutrient diversity and absorption of nonheme iron from plant foods. In comparison to other red meats, lean round cuts provide a lower fat profile while still offering comparable micronutrient density, making them preferable for diets that emphasize lean protein without sacrificing essential nutrients.

Beef round provides a spectrum of nutrients shown to support important health outcomes when consumed as part of balanced dietary patterns. One of the primary benefits is related to its high‑quality protein content. Protein intake is crucial for muscle maintenance, immune responses, and metabolic regulation. Randomized trials and observational studies indicate that diets richer in protein can preserve lean mass during weight loss and even support satiety, reducing overall caloric intake. The amino acid leucine — abundant in beef — is directly involved in triggering muscle protein synthesis through the mTOR signaling pathway. Iron is another nutrient provided in heme form, which research shows is more bioavailable than nonheme iron found in plant foods. Adequate dietary iron prevents iron‑deficiency anemia, which can cause fatigue and reduced cognitive performance. This is particularly relevant for women of reproductive age and vegetarians/vegans who may rely on supplements or fortified foods to meet iron needs. Zinc, also present in generous amounts, plays a critical role in immune function and wound healing; deficiencies correlate with increased infection risk. Selenium, while needed in small quantities, functions as a cofactor for antioxidant enzymes such as glutathione peroxidase, which contribute to oxidative stress management. There is emerging evidence about the role of beef and its constituent nutrients in aging populations. A systematic review found an overall positive effect of beef nutrients on markers of wellbeing, including physical function and metabolic health in adults aged ≥50, though more rigorous trials are needed. However, lean beef included in heart‑healthy dietary patterns, such as DASH or Mediterranean‑style eating plans, has been associated with favorable lipid changes when saturated fat intake is controlled. A controlled feeding study demonstrated that including lean beef as part of a DASH‑pattern diet resulted in reductions in LDL cholesterol comparable to traditional heart‑healthy diets. These benefits illustrate that when lean beef is consumed within a healthful dietary pattern, it can contribute to beneficial outcomes without undermining cardiovascular risk factors.

Source: USDA FoodData Central (FDC ID: 169517)