Chicken is generally the leaner, lower-calorie option, which is why most dietary guidelines favor it over beef. But the full picture depends on which cuts you’re comparing, how you cook them, and how much you eat. A skinless chicken breast and a fatty prime rib are worlds apart nutritionally, but a lean cut of beef and a piece of dark-meat chicken with skin are closer than most people assume.
Calories, Protein, and Fat
Skinless cooked chicken breast contains about 31 grams of protein per 100 grams and roughly 165 calories. Lean ground beef lands at 25 to 27 grams of protein per 100 grams with noticeably more calories, mostly because of its higher fat content. Chicken breast is one of the leanest protein sources available, which is why it shows up in nearly every fat-loss meal plan.
The gap narrows when you compare fattier chicken cuts to leaner beef cuts. Chicken thighs with skin carry significantly more fat than a trimmed top round steak. So “chicken vs. beef” is really a question about which specific cuts you’re putting on your plate. If you’re choosing skinless breast over a marbled ribeye, the calorie and fat difference is dramatic. If you’re comparing skin-on thighs to a lean sirloin, the difference shrinks considerably.
Saturated Fat Varies Wildly by Cut
Saturated fat is where beef’s reputation takes the biggest hit, and it’s also where cut selection matters most. A 6-ounce serving of prime rib packs about 24 grams of saturated fat. Extra-lean beef drops to around 10 grams, and a trimmed top round comes in at just 4 grams for the same portion. That top round figure is comparable to many chicken preparations, especially those cooked with oil or butter or served with the skin on.
Cholesterol levels in beef stay relatively consistent regardless of the cut, hovering around 140 to 144 milligrams per 6-ounce serving. The real variable is saturated fat, which is the type most strongly linked to raising LDL cholesterol in your blood. Choosing lean cuts of either meat keeps saturated fat intake in a reasonable range.
Heart Disease Risk
A large study published in JAMA Internal Medicine tracked cardiovascular outcomes over 30 years and found that both red meat and poultry were associated with slightly higher heart disease risk when consumed in greater quantities. Every two additional servings of unprocessed red meat per week raised cardiovascular disease risk by about 3%, while poultry showed a 4% increase per two additional servings. Processed meats like bacon and deli meat carried the highest risk at 7% per two additional servings.
Those numbers surprised many people because poultry’s risk was not clearly lower than unprocessed red meat’s in this particular analysis. The researchers noted that cooking methods and preparation (breading, frying, adding skin) likely influenced poultry’s results. The broader body of evidence still favors poultry over red meat for heart health, which is why the American Heart Association’s 2026 dietary guidance recommends prioritizing lean, unprocessed poultry over red meat and minimizing processed forms of both.
Cancer Risk and Red Meat
The World Health Organization classifies red meat as “probably carcinogenic to humans” (Group 2A), specifically for colorectal cancer. Processed meat, which includes bacon, hot dogs, and sausages made from either beef or pork, carries a stronger classification: Group 1, meaning there is sufficient evidence it causes cancer. Every 50-gram daily portion of processed meat increases colorectal cancer risk by about 18%. For unprocessed red meat, the estimated increase is 17% per 100 grams eaten daily, if the association is causal.
Chicken does not carry either of these classifications. This is one of the clearest health advantages poultry holds over beef, and it’s a major reason public health organizations recommend limiting red meat intake. That said, the absolute risk for any individual remains relatively small. These percentages describe population-level increases, not a guarantee for any one person.
Cooking Method Matters for Both
Grilling or pan-frying any meat at high temperatures, above about 300°F, creates potentially harmful compounds. Both well-done grilled chicken and well-done grilled steak produce high concentrations of these compounds, which form when proteins react with intense heat. The type of meat matters less than the cooking temperature and how long the meat stays on the heat.
Lower-temperature methods like baking, stewing, or poaching produce fewer of these compounds regardless of whether you’re cooking chicken or beef. Marinating meat before grilling and flipping it frequently also reduces formation. If you grill regularly, these steps apply equally to both proteins.
Nutrients Beef Does Better
Beef is significantly richer in iron, zinc, and B12 than chicken. The iron in red meat is the heme form, which your body absorbs far more efficiently than the iron found in plant foods or poultry. For people at risk of iron deficiency, including those who menstruate, are pregnant, or follow restricted diets, moderate beef consumption can be a practical way to maintain iron stores.
Beef also provides more creatine and carnosine, compounds that support muscle performance and recovery. These aren’t essential nutrients since your body can make them, but athletes and people doing intense training sometimes benefit from dietary sources.
The Practical Takeaway
Skinless chicken breast is lower in calories, lower in saturated fat, and free of the cancer-risk classification that applies to red meat. For most people trying to manage weight or reduce heart disease risk, making chicken your default protein and treating beef as an occasional choice is a reasonable strategy. The AHA’s current guidance reflects this: if you eat red meat, choose lean cuts, skip processed versions, and keep portions moderate.
But a trimmed, lean cut of beef a few times a week is not the health hazard that processed meats and fatty cuts are. The largest risks come from processed meat, high-fat preparations, and cooking at extreme temperatures, patterns that apply to both chicken and beef. How you choose and prepare your meat matters at least as much as which animal it came from.