BCAA Vs EAA: Which is Better?

  • Evidence based
  • Fact checked
BCAA Vs EAA: Which is Better?

Amino acids, the building blocks of life, play a crucial role in human health, especially in the realm of fitness and muscle development. Among these, Branched-Chain Amino Acids (BCAAs) and Essential Amino Acids (EAAs) stand out.

But between BCAAs or EAAs, which is better for muscle growth and overall health? Every time this query is posed, my response is that the answer isn’t as simple as one might assume.

Nevertheless, in this piece, I aim to provide clarity on this subject and assist you in making a well-informed decision.

I. BCAA Vs EAA: Which is Better?

Most observations and scientific research suggest that EAAs are slightly more beneficial than BCAAs. However, one must keep in mind that both have unique roles and potential benefits.

BCAAs have their advantages in terms of energy production and muscle recovery, making them a popular choice among athletes and fitness enthusiasts. EAAs are more beneficial in muscle protein synthesis[1]National Library of Medicine: Essential Amino Acids and Protein Synthesis: Insights into Maximizing the Muscle and Whole-Body Response to Feeding.

Nevertheless, most recent research suggests that EAAs may be a more effective option for stimulating muscle protein synthesis and supporting overall muscle growth and recovery.

If you’re looking for a comprehensive amino acid supplement, EAAs are a better choice due to their inclusion of all essential amino acids, including the three BCAAs.

Related Article: Is BCAA For Bulking Or Cutting: When And How To Start?

1. What are BCAAs?

BCAAs, also known as Branched-Chain Amino Acids, are a group of three essential amino acids: leucine, isoleucine, and valine. They are known for their ability to boost muscle protein synthesis[2]National Library of Medicine: Branched-chain amino acids and muscle protein synthesis in humans: myth or reality? and help in repairing muscle tissue after strenuous workouts.

However, since BCAAs only constitute three of the nine essential amino acids, they are considered an incomplete source of protein.

BCAAs, specifically one essential amino acid, Leucine, play a crucial role in stimulating muscle protein synthesis and promoting muscle growth.

They also help in energy production during exercise and can reduce muscle soreness and fatigue.

However, BCAAs have limitations in terms of their overall impact on muscle protein synthesis.

BCAAs are often found in various protein-rich foods, like whey protein, and are also available as amino acid supplement.

“While every essential amino acid (EAA) includes each branched chain amino acid (BCAA), not every BCAA contains all three EAAs.”

Source: Bodybuildingmealplan.com

2. What are EAAs?

EAAs, also known as Essential Amino Acids, are a group of nine amino acids that cannot be produced by the body and must be obtained through diet or supplements. These include 

  • Histidine
  • Isoleucine
  • Leucine
  • Lysine
  • Methionine
  • Phenylalanine
  • Threonine
  • Tryptophan
  • Valine.

EAAs have a more comprehensive role in the body compared to BCAAs. They are involved in various biological processes, including muscle protein synthesis, hormone regulation, and immune function. EAAs are also considered a complete protein source, providing all the amino acids required by the body.

However, it’s worth noting that while EAAs provide a complete protein source, they may not be necessary for everyone. Those with a balanced diet rich in high-quality proteins may already receive all the essential amino acids they need from food.

II. BCAA Vs EAA: Differences and Similarities

EAA Vs BCAA Venn Diagram
Source – Nutrasciencelabs.com

Here’s a direct comparison between BCAAs and EAAs to help you understand their differences and benefits:

  • Composition: BCAAs consist of three essential amino acids: leucine, isoleucine, and valine, typically in a 2:1:1 ratio. On the other hand, EAAs include all nine essential amino acids, including the three BCAAs, plus six additional amino acids that the body cannot produce on its own.
  • Muscle Protein Synthesis: Leucine, one of the BCAAs, is the primary driver of muscle protein synthesis, while valine and isoleucine have a lesser effect. EAAs, with their complete grouping of necessary amino acids, are believed to stimulate muscle protein synthesis more effectively than BCAAs.
  • Exercise Performance: BCAAs have been popular among athletes for their potential to reduce muscle soreness and fatigue during exercise. However, recent studies suggest that EAAs may be more effective in improving exercise performance and supporting muscle growth.
  • Caloric Content: Both BCAAs and EAAs have a lower calorie count, making them suitable for those watching their overall calorie intake.
  • Complete Protein Source: While BCAAs can be beneficial for specific purposes, such as fasting or low-calorie diets, EAAs are considered a more complete protein source due to their inclusion of all essential amino acids.
  • Cognitive benefits: EAAs, in particular, are associated with improved cognitive function and can potentially help reduce symptoms of depression and anxiety. BCAAs, on the other hand, have been shown to reduce fatigue during workouts but their cognitive impact isn’t as comprehensive as EAAs.
  • Immune Function: EAAs, with their comprehensive amino acid profile, are believed to have a more significant impact on immune function than BCAAs, which lack histidine.

III. What Experts Say About the EAA vs BCAA Debate?

Recent scientific studies have compared the effectiveness of BCAAs and EAAs in stimulating muscle protein synthesis. EAAs have been observed to work better at stimulating muscle protein synthesis than both BCAAs and Leucine alone

Expert opinions on the matter vary, with some recommending a combination of BCAAs and EAAs for optimal results, while others suggest focusing on EAAs for their complete amino acid profile.

IV. Practical Applications: Choose the Right Supplement for You

Based on the available research and expert opinions, here are some tips on choosing the right supplement for your needs:

  • If your primary goal is muscle growth and you already have a well-balanced diet, consider incorporating EAA supplements into your routine to ensure you are getting all the necessary building blocks for protein synthesis.
  • If you are looking for an energy boost during workouts or want to reduce muscle soreness and fatigue, BCAA supplements may be more suitable for you.
  • If you are unsure about which supplement to choose, consider consulting with a registered dietitian or a healthcare professional who can provide personalized recommendations based on your individual needs and goals.

Here is a quick glance table to help you make an informed choice:

Supplement TypeMuscle GrowthEnergy BoostReduce Muscle Soreness/Fatigue
Essential Amino Acids (EAA)YesNoNo
Branched-Chain Amino Acids (BCAA)YesYesYes

V. Tips on incorporating EAAs and BCAAs into a balanced diet

Here are some tips on incorporating EAAs and BCAAs into a balanced diet:

  • Consume high-protein foods: A balanced diet including high-protein foods such as meat, fish, dairy, and whey products is important in providing the required BCAAs and EAAs.
  • Focus on whole food sources: Rather than relying solely on supplements, aim to get your BCAAs and EAAs from whole food sources. This ensures a mix of necessary amino acids and overall better nutrient absorption.
  • Consider EAA and BCAA supplements: If you have specific dietary restrictions or struggle to meet your protein needs, EAA and BCAA supplements can be a convenient option. Just make sure to choose a supplement that provides a balanced ratio of all the essential amino acids.
  • Timing is key: To maximize the benefits of BCAAs and EAAs, consider consuming them before, during, or after your workouts. This can help support muscle recovery and growth.
  • Combine BCAAs and EAAs: While BCAAs can be beneficial on their own, they are more effective when combined with the other essential amino acids. Look for supplements or protein powders that provide a complete profile of all the essential amino acids.
  • Consult a healthcare professional: If you’re unsure about incorporating BCAAs or EAAs into your diet, it’s always a good idea to consult a healthcare professional or registered dietitian. They can provide personalized recommendations based on your specific needs and goals.


Whether you should choose BCAAs or EAAs largely depends on your individual needs and fitness goals. If you’re looking for a supplement to support muscle recovery and reduce exercise-induced fatigue, BCAAs could be a suitable choice. However, if your goal is to boost muscle protein synthesis and support overall health, an EAA supplement may be more beneficial.

While both BCAAs and EAAs have their unique benefits and roles, EAAs appear to offer a more complete solution due to their inclusion of all essential, non-essential, and conditionally essential amino acids. This makes them a potentially superior choice for those looking to maximize their muscle growth and recovery

Similar Posts