Creatine in Foods: Where to Find it Naturally?

Creatine is currently one of the most studied dietary supplements in the field of sports nutrition. Recognized for its benefits in short and intense efforts, it is used by bodybuilders as well as athletes in many other disciplines.

But before being a supplement, creatine is a molecule naturally present in our body… and in certain foods.

So, which foods are richest in creatine? Is dietary intake sufficient to cover an athlete's needs? And why is supplementation often suggested?

What is creatine?

Creatine is a compound naturally synthesized by the body from three amino acids: glycine, arginine, and methionine.

It is primarily stored in muscles as phosphocreatine, where it contributes to rapid energy production during short, explosive, and repeated efforts.

It is estimated that a 70 kg adult has approximately 120 to 140 g of creatine in their body, about 95% of which is stored in skeletal muscles.

How does our body obtain creatine?

Creatine comes from two sources:

• Endogenous synthesis, primarily carried out by the liver, kidneys, and pancreas.
• Diet, through animal-based foods.

In an omnivorous adult, the body synthesizes on average about 1 gram of creatine per day, while diet generally provides an additional gram.

However, these values vary depending on dietary habits and meat or fish consumption.

Which foods naturally contain creatine?

Creatine is found almost exclusively in animal-based foods.

The main dietary sources are:

These values are averages and can vary depending on the species, the animal's diet, and preservation methods.

How much creatine do foods provide?

Even the foods richest in creatine ultimately provide relatively modest amounts.

For example:

• 200 g of beef provides approximately 0.8 to 1 g of creatine.
• 200 g of salmon provides approximately 0.8 g.
• 200 g of herring can provide up to 2 g.

For comparison, a typical creatine monohydrate supplement generally provides 3 to 5 g of creatine per day.

Therefore, several hundred grams of meat or fish would need to be consumed daily to achieve these intakes solely through diet.

Does cooking affect creatine content?

Yes.

Creatine is relatively stable, but some of it can be degraded during prolonged cooking or at very high temperatures.

Some is notably converted into creatinine, a compound naturally eliminated by the kidneys.

Losses vary depending on:

• cooking duration;
• temperature;
• cooking method used.

Gentle cooking generally limits these losses compared to very long or very intense cooking.

Why do vegetarians and vegans consume less?

Plant-based foods contain practically no creatine.

Therefore, people following a vegetarian or vegan diet depend almost exclusively on the synthesis carried out by their bodies.

Studies show that their muscle creatine stores are often slightly lower than those of people who regularly consume animal products.

It is particularly for this reason that supplementation can sometimes lead to a more marked increase in muscle stores in these populations.

Are foods enough for athletes?

To cover daily physiological needs, a balanced diet combined with the body's natural synthesis is generally sufficient.

However, when an athlete wants to increase their muscle creatine stores to optimize performance during short, repeated efforts, dietary intake alone quickly becomes limiting.

Achieving 3 to 5 g of creatine per day solely through food would require consuming very large quantities of meat or fish, which is neither practical nor always compatible with a balanced diet.

Why use a creatine supplement?

Creatine monohydrate provides a precise amount of creatine without significantly increasing protein, fat, or calorie intake.

It is currently the most scientifically studied form.

In adults engaging in short, repeated, high-intensity efforts, daily consumption of 3 g of creatine improves physical performance, in accordance with the health claim authorized by the European Food Safety Authority (EFSA).

This supplementation complements dietary intake, without intending to replace a balanced diet.

Common misconceptions about dietary creatine

Several misconceptions still circulate regarding creatine.

• "Meat contains a lot of creatine."
  In reality, the quantities remain relatively modest.
• "Plants provide creatine."
  Plant foods contain practically none.
• "Just eat more meat."
  To achieve the doses used in supplementation, significant amounts of meat or fish would have to be consumed daily.

Key takeaways

Creatine is naturally present in several animal-based foods, particularly herring, beef, pork, and salmon. These foods contribute to daily intake, in addition to the creatine synthesized by the body.

However, the amounts provided by diet remain relatively low. To achieve the doses generally used in sports nutrition, significant volumes of meat or fish would have to be consumed daily.

This is why creatine monohydrate represents a practical and precisely dosed solution for athletes wishing to increase their muscle creatine stores, while maintaining a balanced diet adapted to their goals.