Protein is an essential nutrient that plays a vital role in muscle growth, tissue repair, immune function, and overall health. When selecting a protein source, it’s important to consider not just the amount of protein per serving but also the calorie and fat content. The image above breaks down some of the best animal-based protein sources, highlighting their nutritional differences. Let’s explore each of these options and determine which one best suits your dietary needs.
1. Chicken Breast: Lean and High in Protein
- 110 calories per 100g
- 23g protein
- 1.3g fat
Chicken breast is one of the best lean protein sources available. It’s low in fat, high in protein, and incredibly versatile. Ideal for muscle building, weight loss, and general healthy eating, chicken is a go-to choice for those looking to maximize protein while keeping calories in check.
Best for: Those following a low-fat, high-protein diet, bodybuilders, and individuals focused on weight management.

2. King Salmon: A Protein and Omega-3 Powerhouse
- 230 calories per 100g
- 26g protein
- 13g fat
Salmon is a nutritional powerhouse, offering high protein and a substantial amount of healthy fats, specifically omega-3 fatty acids. These fats support heart health, reduce inflammation, and improve brain function. While it has a higher fat content than chicken, these are beneficial fats that contribute to overall wellness.
Best for: Those looking to improve heart health, brain function, or follow a balanced diet with healthy fats.
3. Beef: A Classic Protein Source
- 136 calories per 100g
- 20g protein
- 6g fat
Beef provides a good balance of protein and fat while also delivering important micronutrients like iron, zinc, and B vitamins. However, depending on the cut, beef can contain higher amounts of saturated fat, so choosing lean cuts is ideal for heart health.
Best for: Individuals looking to boost iron intake, support muscle growth, and include a good balance of protein and fat in their diet.
4. Bison: Leaner Than Beef, Packed with Protein
- 109 calories per 100g
- 21g protein
- 2g fat
Bison is an excellent alternative to beef, offering a similar flavor but with significantly less fat. It’s also high in iron and essential amino acids, making it a great choice for those looking for a leaner red meat option.
Best for: Those looking for a leaner red meat alternative that provides high protein with minimal fat.
5. Egg: A Nutrient-Dense Protein Option
- 78 calories per 100g
- 6.3g protein
- 5.3g fat
Eggs are considered one of the best natural protein sources, providing a complete amino acid profile. They are also rich in choline, which supports brain health, and lutein and zeaxanthin, which contribute to eye health. Although eggs are lower in protein per 100g compared to meats, they provide essential vitamins and minerals.
Best for: Those looking for a nutrient-dense protein source that also supports brain and eye health.
Which Protein Source Should You Choose?
The right protein source for you depends on your dietary goals:
- For Lean Protein & Muscle Building: Chicken breast and bison are the best choices due to their high protein and low fat content.
- For Heart-Healthy Fats & Omega-3s: King salmon is an excellent option due to its rich omega-3 fatty acids.
- For Balanced Protein & Nutrients: Beef and eggs provide a good balance of protein and essential vitamins and minerals.
Final Thoughts
Protein is an essential component of a healthy diet, and each of these sources offers unique benefits. Whether you’re focused on building muscle, improving heart health, or maintaining balanced nutrition, choosing the right protein source will help you meet your goals. By incorporating a variety of protein-rich foods, you can ensure you’re getting the essential nutrients your body needs to thrive.
Which protein source do you include most in your diet? Let us know how you balance your protein intake for optimal health!

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