Is All Protein 'Good' Protein? A Dietitian Ranks Them From Most to Least Healthy

“Protein” has become a major health buzzword in marketing, but the label alone doesn’t make a food nutritious. While many products promote their protein content, not all high-protein foods offer the same overall health benefits.

Why "Protein" Doesn't Always Mean "Healthy"

Protein is a macronutrient, along with fat and carbohydrates, all of which are equally important to include in your diet for different reasons.

Many foods contain protein, but that doesn't automatically make them healthy. Some high-protein foods may also contain large amounts of saturated fat or be ultra-processed, with protein added during processing.

The list below ranks nine common protein-rich foods, from most to least healthy. The healthiest protein sources are minimally processed and provide additional macro- and micronutrients. Conversely, less healthy sources, such as ultra-processed meats and high-protein packaged snacks, are toward the bottom of the list and offer little nutritional value.

1. Legumes

Legumes include beans, peas, and lentils and offer a dynamic combo of protein and fiber. A 1/2-cup serving of cooked legumes generally offers 8-9 grams (g) of protein and 7.5 g of fiber. No other protein source delivers this unique pairing to quite the same extent.

They contain virtually no saturated fat and are packed with beneficial phytonutrients only found in plants, as well as iron, folate, potassium, and magnesium. Studies show that eating legumes regularly is associated with a reduced risk of death from all causes.

Legumes are inexpensive and versatile. Try using them in place of ground meat or poultry in dishes like chili, spaghetti sauce, soups, tacos, and salads.

2. Soy Foods

Soy foods, including tofu, tempeh, and edamame, come from legumes but are powerful enough protein sources to stand on their own in this list. A 3-ounce (oz) serving of firm tofu provides 9 g of protein, while the same-sized serving of tempeh provides 18 grams.

Soy contains compounds called isoflavones, which may support heart health and bone density and have protective effects against certain cancers. Plus, tempeh is a fermented food, which means it naturally offers a probiotic (friendly bacteria) benefit for gut health.

Tempeh works well in chili, stews, sandwiches, and stir-fries. Extra-firm tofu can be sauteed, marinated, or crumbled for breakfast scrambles and burritos, whereas silken tofu can be blended into smoothies or dips for extra protein. Edamame can be purchased either in its pod, lightly salted and served with a savory dip, or de-shelled to top salads and blend into hummus.

3. Fatty Fish

All fish contain some protein, but fatty fish (like salmon, tuna, and mackerel) stand out because of their rich concentration of omega-3 fatty acids. Omega-3s, including DHA and EPA, are known to support heart, brain, and eye health and have anti-inflammatory properties. Plus, fish typically has much less saturated fat than other animal proteins.

A 3-ounce portion of baked salmon provides 22 grams of protein, while a can of tuna contains up to 40 grams. If you enjoy fish, opt for fattier varieties a couple of times a week, roasted with a side of whole grains and veggies, on a salad, or in a wrap.

4. Eggs

One whole egg contains around 6-7 grams of protein. Eggs are one of the most bioavailable protein sources, meaning your body absorbs their nutrients easily. Plus, they are fairly inexpensive and easy to use.

In addition to protein, eggs are high in choline, a nutrient that supports brain health. They also contain selenium, B vitamins, and lutein (in the yolk), a nutrient that supports eye health.

Eggs can be hard-boiled for a portable protein snack, scrambled for breakfast, microwaved for a bagel sandwich, and used in baking.

5. Greek Yogurt & Cottage Cheese

Both Greek yogurt and cottage cheese are processed in a way that concentrates their protein-to-calorie ratios. They can also contain live cultures that benefit digestive health and the gut microbiome, just check the label.

Choose plain, unsweetened versions to avoid added sugars while maximizing protein benefits. A 7-ounce container of Greek yogurt provides nearly 20 grams of protein. A 4-oz serving of 1% cottage cheese has 14 grams.

Both Greek yogurt and cottage cheese can make a protein-rich base, topped with berries, peaches, or mandarin oranges, as well as nuts and seeds.

6. Nuts & Seeds

Nuts and seeds are very healthy foods overall and contain some protein; however, they're primarily fat sources rather than primary protein sources.

Studies show that regularly consuming nuts is associated with a reduced risk of heart disease. Choose unsalted, no-added-sugar varieties, and opt for raw nuts and seeds whenever possible.

There are around 5 grams of protein per 1-ounce serving of chia seeds or walnuts. Eat a handful in the afternoon, mix them with dried fruit and dark chocolate for a trail mix, or toss them into salads.

7. Minimally Processed Red Meats & Poultry

Meat can have real nutritional value, providing things like iron, zinc, B12, and creatine. However, meat and poultry are also high in saturated fat, and excessive consumption is associated with an increased risk of adverse health effects.

The World Health Organization categorizes red meat as a Group 2A carcinogen, meaning that there is limited but available evidence that it causes cancer, particularly when consumed regularly.

8. Processed Meats

Processed meats, such as deli meats, bacon, and sausage, are classified as Group carcinogens by the World Health Organization, with strong evidence for colorectal cancer risk. A typical hot dog can provide 5 grams of protein, but it's also high in sodium, nitrates, and preservatives, and often contains a lot of saturated fat.

The protein in processed meats doesn't offset the health risks of eating them regularly, which is why these foods are placed toward the end of the list.

9. Fast Food & Ultra-processed Protein Snacks

These rank last because the protein is packaged with a constellation of harmful ingredients. Calling them protein sources is technically true, but it's also misleading for those pursuing a healthy diet.

Fast foods like burgers, chicken nuggets, and hot dogs are very high in sodium, saturated fat, and refined carbohydrates, and often contain additives, fillers, stabilizers, and artificial flavors. Other convenience items, like "protein cookies" and "protein chips", may not be very healthy to begin with and may simply have protein added during processing.

According to the NOVA classification, which categorizes foods based on the extent and purpose of their processing, high consumption of ultra-processed foods like these is linked to obesity, chronic disease, and early death.