Contents
What it is
Beef is the meat of cattle. Cuts differ enormously: hard-working muscles such as chuck, shank and brisket are full of connective tissue and tough, but long simmering melts that into gelatine and they turn tender, while little-used cuts like sirloin and tenderloin have less of it and want fast, short cooking. Korea's grading scale (1++ down to 3) is based largely on marbling, which is an index of tenderness and flavour rather than a ranking of nutrition. The red colour comes from myoglobin, an iron-bearing protein.
Most arguments about beef come from treating "red meat" as one thing. But lean cuts and processed meat are handled differently by the evidence.
The WHO's IARC classifies processed meat as a Group 1 carcinogen and red meat as Group 2A (probable). They are not the same category. What follows refers to unprocessed lean beef.
Key benefits
- Nutrition data
Heme iron is efficient against anaemia
Beef's iron is heme iron, absorbed at 15–35%. Unlike plant non-heme iron, it is barely hindered by oxalate, phytate or tannins, making it a practical source when iron-deficiency anaemia is present.
- Nutrition data
Zinc and vitamin B12 come together
100 g supplies more than half the daily zinc requirement and exceeds the requirement for B12. Both are nutrients that are hard to cover from plant foods.
- Nutrition data
Complete protein helps maintain muscle
26 g per 100 g with a balanced essential amino acid profile. The role of animal protein in preventing age-related muscle loss has been studied repeatedly.
- Nutrition data
A natural source of creatine and carnitine
Creatine, which supplies rapid energy to muscle, is nearly absent from plant foods. Red meat is the main dietary source.
How to eat it well
- Choose lean cuts. Round, eye of round and sirloin are lower in saturated fat.
- Up to about 500 g a week (cooked weight) is the upper limit several bodies recommend for red meat.
- Do not char it over open flame. High-heat cooking generates heterocyclic amines and polycyclic aromatic hydrocarbons. Water-based cooking like braising produces far less.
- Marinating reduces those compounds. Rosemary, garlic and pepper are particularly effective.
- Eating it with vegetables offsets the fibre gap it leaves.
How to read the grades
Each benefit carries a label showing how far research on people supports it. Grades differ between items even within the same ingredient.
- Nutrition data
- A fact verifiable from food composition databases or health authorities. This is a different kind of statement from a clinical effect.
- Strong evidence
- Consistently confirmed across randomised controlled trials or meta-analyses.
- Moderate evidence
- Human studies exist, but effect sizes are small or results are mixed.
- Early research
- Cell or animal work, or small preliminary studies.
- Not established
- Commonly claimed, but not confirmed in studies on people.
What to watch out for
- Processed meat (ham, sausage, bacon) must be treated separately from lean beef. It is the Group 1 classification.
- Cuts high in saturated fat (brisket, short rib) affect LDL cholesterol.
- With gout, account for the purine content.
- If you restrict protein for kidney disease, set intake with your clinician.
- Undercooked beef carries infection risk; minced beef must be cooked through.
Nutrition
Approximate values per 100 g edible portion.
- Calories
- 217 kcal11%
- Protein
- 26.1 g52%
- Fat
- 11.8 g15%
- Iron
- 2.6 mg14%
- Zinc
- 6.3 mg57%
- Vitamin B12
- 2.6 µg108%
- Selenium
- 24 µg44%
- Vitamin B3
- 5.4 mg34%
Percentages are of the US FDA Daily Value for adults and children 4 and over. National reference intakes differ by sex and age.
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Sources
The databases and health authorities this article's nutrition figures and health statements draw on.
