Not All Proteins Are Made Equal: The Importance of Protein Source in Muscle Building and Strength Gain

Kasun Sanjeewa Perera
3 min readJul 9, 2023

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Proteins are fundamental to human health, serving as the building blocks for our bones, muscles, cartilage, skin, and blood. These essential compounds support numerous bodily functions, including muscle tissue repair, immune response, and hormone regulation. When focusing on muscle building and strength gain, not only does the amount of protein intake matter, but equally, if not more crucial, is the quality and source of the consumed protein.

Understanding the Basics: The Anatomy of Protein

Proteins are composed of 20 different amino acids. Among these, nine are deemed “essential,” as they cannot be synthesized by the body and must be sourced from the diet. The quality of a protein source is largely determined by its amino acid profile, specifically its content of these essential amino acids. A “complete protein” source is one that provides all of the essential amino acids in sufficient quantities. While animal-derived proteins like meat, poultry, and dairy products are often recognized as complete proteins, many plant-based proteins can also supply a complete amino acid profile when combined appropriately.

The Unequal Universe of Proteins

The digestibility of protein, or how well our bodies can utilize the amino acids, is another key determinant of protein quality. Animal-based proteins are usually more digestible and thus possess a higher biological value, indicating that a larger portion of the consumed protein is absorbed and utilized by the body. Nonetheless, this doesn’t diminish the value of plant-based proteins. By cleverly pairing various plant-based proteins, a balanced, complete protein intake that’s easily digestible can be achieved.

Another important factor is the leucine content in the protein source, an essential amino acid that stimulates muscle protein synthesis. Proteins rich in leucine are viewed as beneficial for muscle growth and recovery.

Choosing the Right Protein for Muscle Building and Strength Gain

Different protein sources boast distinct profiles of amino acids, nutrient content, and digestibility. All these factors can impact their efficiency for muscle building and strength gain.

When considering diets predominantly comprising Asian and South Asian cuisines, there are several rich sources of high-quality proteins to choose from:

Soy and Soy Products: Tofu, tempeh, and edamame beans are excellent sources of plant-based ‘complete’ proteins. They are particularly rich in the amino acid leucine, which aids muscle building.

Lean Meat and Poultry: Chicken, especially the breast part, offers high-quality protein as it’s lean and packed with essential amino acids. For non-vegetarians, incorporating lean meats is a great way to boost protein intake.

Fish and Seafood: While salmon might not be a common choice in Asian and South Asian diets, many other seafood options like shrimp, prawns, and local varieties of fish like Tuna provide high-quality protein and heart-healthy omega-3 fatty acids.

Dairy: Milk, yogurt, cheese, and paneer – a cheese commonly used in South Asian cuisine – are complete proteins that provide all the essential amino acids your body needs.

Legumes and Lentils: Lentils and beans, such as chickpeas, black beans, and kidney beans, common in South Asian diets, are great sources of plant-based protein.

Millets and Brown Rice: Millets, widely consumed across many parts of Asia, are a rich source of protein. Although they are not complete proteins on their own, when combined with lentils or beans – like in the traditional Indian dish ‘khichdi’ – they provide all the essential amino acids your body needs.

Building muscle and gaining strength is not solely about consuming protein – it’s about ensuring that the protein you consume comes from the right source. A balanced diet incorporating a variety of protein sources can help you achieve a comprehensive amino acid profile, thereby maximizing your muscle building and strength gains. Along with balanced protein intake, it’s essential to engage in regular strength-building exercises and maintain a well-rounded diet rich in other macronutrients (carbohydrates and fats) and micronutrients (vitamins and minerals).

In conclusion, while the role of protein in our diet is undeniable, it’s crucial to understand that not all proteins are created equal. The differences among protein sources can significantly influence health outcomes, especially in terms of muscle building and strength gain. Whether you’re a fitness enthusiast, an athlete, or someone simply aiming for a healthier lifestyle, choosing high-quality protein sources that align with your dietary preferences and cultural habits is an essential part of the journey.

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Kasun Sanjeewa Perera
Kasun Sanjeewa Perera

Written by Kasun Sanjeewa Perera

Scientist to Entrepreneur, 10 years in Academics in Asia, Middle East and Europe, 6 years in Startups and continuing the journey in AI & Data Consulting.

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