Beef, rib eye, small end (ribs 10-12), separable lean only, trimmed to 0" fat, select, raw

Beef rib eye comes from the primal rib section of cattle, specifically between ribs 10 and 12. This area is renowned for its balance of tenderness and flavor because the muscle sees moderate use during the animal’s life. Traditionally, ranchers and butchers prized this cut for its marbling — thin veins of fat interspersed throughout the muscle that melt during cooking and enrich the meat’s flavor. The "small end" refers to the further anterior portion of the rib, closer to the chuck (shoulder) than the large eye closer to the loin. This cut’s anatomy includes the longissimus dorsi muscle, which runs along the spine and delivers consistent texture and flavor. Historically, rib eye steaks have been staples of Western cuisines, particularly in American, Argentinian, and French culinary traditions, where beef has played a central role in nutrition and social dining. Production begins on cattle farms where Bos taurus breeds are raised for meat quality. The animal’s diet — whether grass‑fed, grain‑fed, or a combination — influences the fatty acid profile, tenderness, and flavor of the beef. Grass‑fed cattle produce leaner meat with a slightly different micronutrient profile, including potentially higher levels of omega‑3 fatty acids and vitamin E, though overall protein remains high regardless of feeding practice. Once cattle reach market weight, generally around 18–24 months of age depending on breed and feeding strategy, they are processed under USDA inspection standards. The USDA (U.S. Department of Agriculture) categorizes beef into quality grades such as Prime, Choice, and Select based on marbling and maturity — with Select being leaner and having less marbling than Choice or Prime. This particular food description — “separable lean only, trimmed to 0″ fat, select, raw” — means that visible external fat has been trimmed away so only the lean muscle tissue is measured. That produces nutritional data reflecting lean protein content with minimal surface fat, making it a useful reference for diet planning and nutrient analysis. While rib eye is often thought of as a high‑fat steak, this lean trimmed version provides a clearer picture of the underlying muscle nutrients. Variability still exists between cattle, and nutritional values can differ subtly by breed, age, diet, and post‑mortem handling. Lean beef like this is widely used in dietary studies, muscle metabolism research, and clinical nutrition because its protein and micronutrient content are reliably measured and biologically relevant. This section helps set expectations for what rib eye lean is, where it comes from, and why it appears across dietary reference materials and health information databases.

The nutritional profile of this lean rib eye cut is dominated by high‑quality protein and essential micronutrients. At 149 kcal per 100 g, this cut provides a much higher protein per calorie ratio than many other animal protein sources. With approximately 21.2 g of protein and 6.6 g of total fat per 100 g, the macronutrient ratio reinforces its value within low‑carb or muscle‑centric diets. This cut contains virtually zero carbohydrates, making it particularly suitable for ketogenic and other carbohydrate‑restricted eating plans. Protein in beef is considered complete, meaning it contains all nine essential amino acids your body cannot synthesize. The specific amino acid profile — rich in leucine, isoleucine, valine (branched‑chain amino acids), and lysine — supports muscle protein synthesis, immune function, and tissue repair. The lean cut provides approximately 1.67 g leucine per 100 g, a key trigger for muscle anabolism. Its fat profile includes around 2.65 g saturated fat — lower than fattier grades — alongside monounsaturated fats (~2.77 g) that are generally considered neutral or beneficial when replacing refined carbohydrates. Micronutrient analysis reveals this beef cut is a rich source of bioavailable iron (1.94 mg per 100 g), vital for oxygen transport and energy metabolism. Iron from beef is heme iron, which is absorbed by the body more efficiently than non‑heme iron in plant foods. It also boasts 2.51 µg of vitamin B12, fulfilling a significant portion of the Recommended Dietary Allowance (RDA), especially important for nerve function and red blood cell production. Zinc (~5.28 mg) supports immune cell signaling and DNA repair, while selenium (16.5 µg) provides antioxidant support. Other B‑vitamins like niacin, riboflavin, and vitamin B6 contribute to energy metabolism and neurological health. Compared with other lean proteins such as skinless chicken breast or lean pork loin, this rib eye lean cut offers a denser micronutrient array, particularly for minerals like zinc and iron. While white meats tend to be lower in saturated fat, lean beef delivers a combination of nutrients that are harder to obtain from plant foods alone, such as B12 or heme iron. However, it’s important to balance these benefits with considerations related to saturated fat and dietary patterns. Overall, this nutrient breakdown highlights why lean rib eye remains a staple in diets aimed at performance, recovery, or micronutrient sufficiency.

Lean beef consumption, when contextually balanced within a varied diet, can support several aspects of human health. High‑quality protein from beef provides all essential amino acids, helping maintain muscle mass — a critical factor in aging and athletic performance. Studies show that diets supplying sufficient protein can mitigate sarcopenia (age‑related muscle loss) and support recovery after exercise. Consuming lean beef alongside resistance training has been associated with increased muscle protein synthesis compared with lower‑protein diets. Beef is also an important source of heme iron, which is absorbed more efficiently than plant‑based non‑heme iron. This can be especially valuable in populations at risk of iron deficiency, such as menstruating women, adolescents, and endurance athletes. Adequate iron status supports oxygen transport and reduces fatigue symptoms. Research emphasizes that meat‑derived iron can help prevent iron‑deficiency anemia more reliably than plant sources alone. The cut’s high vitamin B12 content also supports neurological health and DNA synthesis — nutrients absent in plant foods unless fortified. B12 deficiency is linked to fatigue, memory issues, and neurological impairment. The mineral zinc found in beef plays a central role in immune function, wound healing, and protein synthesis. Zinc deficiency, common in many global regions, impairs T‑cell function and increases susceptibility to infection. Providing bioavailable zinc through lean beef can help meet recommended intakes without excessive calories. Beef also supplies phosphorus and selenium, which contribute to bone health and antioxidant defenses. Despite debates around saturated fat, recent evidence underscores that lean unprocessed beef does not necessarily elevate cardiovascular disease (CVD) risk factors when it replaces refined carbohydrates or ultra‑processed foods. A 2024 systematic review found that daily unprocessed beef had minimal effects on most blood lipids and blood pressure, though a small increase in LDL‑cholesterol was noted compared with diets lower in beef. Moderation remains key: health organizations often recommend limiting red meat intake to a few servings per week to balance nutrient benefits with chronic disease prevention. Nonetheless, including lean cuts such as this rib eye trim provides concentrated protein and micronutrients with less saturated fat than fattier versions.

Despite the nutrient density of lean beef, certain populations should exercise caution or moderation. Epidemiological studies consistently link high consumption of red and processed meats to increased risks of colorectal cancer and type 2 diabetes. The International Agency for Research on Cancer (IARC) classifies unprocessed red meat as probably carcinogenic (Group 2A), with the strongest evidence for colorectal cancer associations. This risk appears strongly dose‑dependent, with higher intake correlating with increased risk. Minimizing frequency and portion size can help balance benefits and risks. (维基百科) Individuals with preexisting cardiovascular disease or high LDL‑cholesterol should also monitor saturated fat intake, even from lean cuts, because dietary saturated fat can modestly raise LDL levels in some people. Those with hemochromatosis — a genetic condition causing iron overload — should limit red meat to avoid exacerbating iron accumulation. Always consult healthcare providers before significantly altering meat intake, particularly for people with metabolic conditions. Proper cooking is essential: raw or undercooked beef can harbor bacteria like E. coli or Salmonella, necessitating safe handling and minimum internal temperatures for steaks (145 °F with rest time) to ensure food safety.

Source: USDA FoodData Central (FDC ID: 168621)