How to Reduce Myostatin for Maximal Muscle Growth: What the Science Actually Shows

Have you ever seen an animal with myostatin deficiency? Those of you interested in building muscle would be very interested to see one. Animals with myostatin deficiency grow to enormous proportions of muscle mass with very low body fat. A human with very low levels of myostatin would probably look like a top-level bodybuilder – naturally, without drugs.

That’s not science fiction. It’s happened. And understanding how myostatin works – and how to reduce it – is one of the most underrated areas of muscle building science.

What Is Myostatin?

Myostatin (also known as growth differentiation factor 8 or GDF8) is a myokine protein produced and released by skeletal muscle cells. When secreted into the bloodstream, it has the ability to suppress muscle cell growth and differentiation. It’s essentially your body’s built-in muscle limiter – a biological brake that prevents muscles from growing beyond a certain point.

From an evolutionary standpoint, this makes sense. Excessive muscle mass is metabolically expensive – it requires significantly more calories to maintain. The body uses myostatin to cap muscle growth at a level it considers sustainable. The problem for bodybuilders and serious lifters is that this cap is set well below what most of us would like.

Myostatin was discovered in 1997 by Se-Jin Lee and Alexandra McPherron at Johns Hopkins University. Since then, it’s become one of the most intensely researched proteins in sports science.

What Happens When Myostatin Is Absent?

The most striking evidence for myostatin’s role in muscle growth comes from cases where it’s missing entirely.

Belgian Blue cattle carry a natural double-muscling mutation that eliminates myostatin production. The result is cattle with twice the muscle mass of normal animals, almost no body fat, and a physique that looks like something out of a bodybuilding competition. This isn’t selective breeding for size – it’s a single gene mutation removing the muscle limiter.

Bully whippets – a naturally occurring mutation in whippet racing dogs – produce a similar result. Dogs with one copy of the mutation are the fastest whippets in existence. Dogs with two copies are too muscled to race but look extraordinary.

And it’s happened in humans. In 2004, a paper published in the New England Journal of Medicine described a German child born with extraordinary muscle mass and exceptional strength. The child’s mother was a professional sprinter. Genetic testing confirmed a mutation in the MSTN gene – the gene that encodes myostatin. The child had virtually no functional myostatin. At four years old, he was holding two 3kg dumbbells horizontally with outstretched arms. (Schuelke M et al., N Engl J Med 2004;350(26):2682-2688)

This isn’t hypothetical. The muscle-limiting role of myostatin is real and documented in multiple species, including us.

Why Myostatin Increases – and When It Works Against You

From a biological standpoint, myostatin’s primary function is to control metabolism in order to support the immune system. When there’s an infection in the body, muscle growth is compromised because of increased myostatin secretion. Inflammation automatically triggers the production of this protein – muscle cells cannot grow or multiply during this period because the organism’s priority is the immune system, not muscle building.

This means that amino acids that would normally be used as building blocks for muscle are instead diverted to immune system processes during periods of inflammation. Overtraining, poor sleep, dental infections, gut issues, STDs – all of these trigger inflammation, which triggers myostatin, which suppresses muscle growth. It’s a mechanism most lifters don’t account for at all.

The inflammatory cytokines TNF-alpha and IL-6 directly upregulate myostatin gene expression. This is why managing inflammation isn’t just about recovery – it directly affects your ability to build muscle at all.

How to Reduce Myostatin Naturally

#1. Heavy Resistance Training

Here’s the counterintuitive part: a hard training session acutely raises myostatin in the hours immediately after. But consistent, progressive resistance training over weeks and months significantly reduces baseline myostatin levels. Your body adapts – recognizing that sustained muscle demand requires downregulating the protein that limits muscle growth.

Research published in the Journal of Strength and Conditioning Research confirmed that heavy resistance training reduces circulating myostatin levels in trained individuals. The most effective modalities: high-volume compound movements – squats, deadlifts, bench press, rows – performed with progressive overload. The greater the mechanical tension and metabolic stress placed on the muscle, the stronger the signal to reduce the muscle limiter.

The practical implication: training hard consistently is itself one of the most effective myostatin reduction strategies available.

#2. Creatine

Creatine is already well established as one of the most effective muscle-building supplements available. It turns out it also directly reduces myostatin.

A study by Saremi et al. found that creatine monohydrate supplementation combined with resistance training significantly reduced serum myostatin levels in resistance-trained males over 8 weeks – by approximately 17% compared to the training-only placebo group. The mechanism appears to be twofold: creatine may directly inhibit myostatin gene expression, and it also enables higher training volumes which independently reduce myostatin. (Saremi A et al., Mol Cell Endocrinol. 317(1-2):25-30, 2010)

If you’re not already supplementing with creatine, the myostatin reduction effect adds another strong reason to start.

Related: The Complete Creatine Guide

#3. Epicatechin – The Dark Chocolate Compound

Epicatechin is a flavonoid found in dark chocolate and green tea – and it’s one of the most interesting natural myostatin inhibitors identified in research.

A study by Rodriguez et al. found that epicatechin supplementation increased follistatin (myostatin’s natural antagonist) by 49.2% and decreased myostatin by 16.6% in older adults. (Rodriguez J et al., J Nutr Biochem, 2014)

The effective dose from research is roughly 50–100mg of epicatechin per day. To get that from food, you’d need approximately 40g of 85%+ dark chocolate daily – which most people can manage without much complaint. Green tea is another source, though you’d need several cups. Pure epicatechin supplements are also available for those who want a more precise dose.

The mechanism is twofold: epicatechin directly inhibits myostatin signalling, and it simultaneously increases follistatin – which binds to myostatin and neutralises it. Both effects work in the same direction.

#4. Optimise Follistatin

Follistatin is myostatin’s natural antagonist – a protein that binds directly to myostatin and neutralises it. The higher your follistatin levels, the more myostatin gets blocked before it can suppress muscle growth. Think of follistatin as the off switch for the off switch.

The most effective ways to increase follistatin naturally:

Eggs – particularly egg yolks, which are one of the best dietary sources of compounds that support follistatin production. Another reason the “avoid egg yolks” advice was misguided.
Resistance training – the same training that reduces myostatin also increases follistatin. A double win.
Vitamin D – vitamin D receptor binding appears to regulate both follistatin production and myostatin gene expression. Deficiency in vitamin D is associated with higher myostatin levels. Get your levels checked and supplement if needed.
Epicatechin – as covered above, increases follistatin by nearly 50% in research.

Note: oral follistatin supplements are not effective. The follistatin protein is a large molecule that is destroyed in digestion – it never reaches the bloodstream in meaningful quantities when taken orally. Save your money on those.

#5. Leucine and BCAAs

Leucine – the primary muscle-building amino acid – activates the mTOR pathway, which directly downregulates myostatin expression. Several animal studies and some human research have shown that leucine supplementation reduces myostatin levels.

The practical dose is 2–3g of leucine per meal, which also happens to be the threshold dose for maximally stimulating muscle protein synthesis. You get both effects simultaneously from a high-protein meal containing adequate leucine.

Related: The Complete BCAA Guide

#6. Sleep – the Most Overlooked Myostatin Variable

Sleep is when your body produces its largest daily pulses of growth hormone – and growth hormone is one of the primary suppressors of myostatin. When you don’t sleep enough, two things happen simultaneously: GH production drops, removing one of the main myostatin suppressors; and cortisol rises, which actively increases myostatin production. The result is a hormonal environment that’s significantly more permissive of myostatin than a well-rested state.

Sleep deprivation has been shown to significantly increase circulating myostatin in research – making inadequate sleep one of the fastest ways to undo the myostatin-reducing effects of hard training. Most adults need 7–9 hours. If you’re regularly getting less than 6, your myostatin levels are almost certainly elevated above where they could be.

#7. Reduce Inflammation

As explained above, inflammation is one of the primary triggers for myostatin production. Every source of chronic inflammation in your body is quietly elevating myostatin and limiting your muscle growth potential. The practical steps:

Omega-3 fatty acids – fish oil directly reduces TNF-alpha and IL-6, the cytokines that trigger myostatin. Take 3–5g daily. Related: Fish Oil Benefits: Muscle Growth, Fat Loss, and Everything Else
Avoid overtraining – overtraining causes systemic inflammation, raising myostatin and defeating the purpose of training. More is not always better. Related: The Most Common Overtraining Symptoms
Gut health – the gut is a major source of chronic inflammation when it’s unhealthy. Regularly consume probiotics and prebiotics
Dental and sinus health – dental infections are a surprisingly common source of chronic systemic inflammation. Keep your teeth, mouth, and sinuses healthy.
Avoid alcohol, tobacco, and recreational drugs – all create inflammation and elevate both myostatin and cortisol

#8. Balanced Nutrition

Eat balanced meals that contain the required protein, complex carbohydrates, healthy fats, and both soluble and insoluble fibre. Use supplements such as creatine and glutamine to support muscle metabolism, especially during periods of stress or illness when myostatin naturally rises.

What About Myostatin Inhibitor Supplements?

The supplement market is full of products claiming to be “myostatin inhibitors.” Most of them don’t work in humans. The research base for most proprietary myostatin-blocking supplement blends is either non-existent or conducted only in vitro (in a test tube) rather than in living humans.

The exception is epicatechin, which has actual human research behind it. Everything else on this list – creatine, leucine, sleep, resistance training, omega-3s – is also supported by evidence. Stick to those.

As for pharmaceutical myostatin inhibitors: drugs like MYO-029 and ACE-031 were trialled specifically for muscular dystrophy treatment. Results were mixed and side effects were significant – including unexpected bleeding. These are not viable options for healthy lifters, and they’re not legally available.

The Practical Summary

You can’t eliminate myostatin – and you wouldn’t want to. Complete myostatin deficiency comes with its own complications. What you can do is push your baseline levels as low as possible within a healthy range through the strategies above. Done consistently, the cumulative effect is meaningful.

Train hard with compound movements. Supplement with creatine. Eat dark chocolate. Eat eggs. Sleep 8 hours. Take omega-3s. Manage inflammation. Stay healthy. None of these are revolutionary. But together, they create a hormonal environment where your muscles have the best possible conditions to grow – with the natural brake as loosened as it can reasonably get.

How to Reduce Myostatin for Maximal Muscle Growth: What the Science Actually Shows

What Is Myostatin?

What Happens When Myostatin Is Absent?

Why Myostatin Increases – and When It Works Against You