Cos'è la creatina? Benefici, usi e rischi

What is creatine?

La creatina è un composto naturale prodotto dal fegato, dai reni e dal pancreas a partire dagli aminoacidi. Circa il 95% di essa viene immagazzinato nei muscoli, con piccole quantità presenti nel cervello.¹

You also get creatine from foods such as red meat and fish. However, the amount from diet alone is much lower than the amount typically provided by supplements.

Integratori di creatina are usually sold as powders, capsules, or tablets. The most widely studied and commonly used form is creatine monohydrate.²

Creatine plays an important role in energy production. It helps your body make adenosine triphosphate (ATP), which is the main energy source your cells use, especially during short bursts of intense activity.

Taking creatine increases the amount stored in your muscles.

So when it comes to short, high-powered efforts such as weightlifting, sprinting, or HIIT, creatine can make a real impact-but it doesn’t offer the same benefit for longer, steady-state endurance exercise.

Se stai pensando di aggiungere la creatina alla tua routine, ecco cinque motivi per cui potrebbe valerne la pena.

© Paziente / Heather Ainsworth

1. Improves muscle strength and power

La creatina può aumentare la forza muscolare e la potenza.³Many people find they can lift slightly heavier weights or perform more repetitions.

2. Favorisce la crescita muscolare

La creatina può contribuire ad aumentare la massa muscolare.⁴ This is partly due to greater training capacity and partly because creatine draws water into muscle cells.

Un leggero aumento di peso corporeo è comune nelle prime settimane. Di solito si tratta di acqua immagazzinata nei muscoli, non di grasso.

3. Supports muscle recovery

Alcune evidenze suggeriscono che la creatina possa aiutare a favorire il recupero muscolare dopo un esercizio intenso,⁵ allowing more consistent training.

4. Potrebbe supportare la funzione cognitiva

Because creatine is also present in the brain, researchers are studying whether it may support memory or mental performance in certain situations as well as possibly aid in combating conditions such as demenza.⁵ More research is needed before firm conclusions can be made.

5. May support some medical conditions

Creatine has also been studied in a range of medical conditions that affect muscle strength and energy production. These include inherited muscle disorders such as distrofia muscolare and other myopathies,⁶ as well as mitochondrial disorders,⁸ where the body’s ability to produce energy is impaired.

Researchers have also explored its potential role in neurological conditions such as malattia di Parkinson⁷e sclerosi multipla,⁸ and in perdita muscolare legata all'età (sarcopenia). ⁹

While some small studies suggest creatine may improve muscle strength or reduce fatigue in certain groups, results have been mixed and benefits are not consistent.

For healthy adults taking recommended doses, creatine is generally considered safe. It is one of the most researched supplements available.

Side effects of creatine

Possible side effects include:

• Temporary weight gain.

• Gonfiore.

• Mild stomach discomfort.

Questi effetti sono più probabili con dosi più elevate. Bere abbastanza liquidi può aiutare a ridurre i sintomi digestivi.

There is no strong evidence that creatine causes kidney damage in healthy people using standard doses.

Should you speak to a doctor before taking creatine?

Creatine is a naturally occurring compound that helps your muscles produce energy during short bursts of high-intensity activity. When taken as a supplement, it may improve strength, power, and muscle mass - particularly when combined with structured training.

The main creatine benefits relate to improved exercise performance and increased muscle size. For most healthy adults taking recommended doses, creatine is considered safe, with mild side effects such as temporary weight gain or bloating.

Tuttavia, la creatina non è adatta a tutti. Se hai problemi ai reni, sei in gravidanza o gestisci una condizione di salute a lungo termine, è importante consultare un medico prima di iniziare l'integrazione.

Creatine can be a useful addition to a well-balanced training plan - but it’s not a replacement for regular exercise and a healthy diet.

Is creatine safe to take every day?

Yes, for most healthy adults, taking 3-5 grams of creatine daily is considered safe. Consistency is more important than cycling on and off.

Does creatine cause hair loss?

C'è una quantità limitata di prove che collegano la creatina alla perdita dei capelli. Uno studio di piccole dimensioni ha suggerito che potrebbe aumentare i livelli di un ormone associato alla calvizie maschile, ma ciò non è stato confermato da ricerche più ampie. Non ci sono prove chiare che la creatina causi direttamente la perdita dei capelli.¹⁰

Does creatine damage your kidneys?

In healthy people using recommended doses, creatine has not been shown to damage kidney function. However, people with existing kidney disease should avoid it unless advised by a doctor.

Do you need a loading phase?

A loading phase (around 20 grams daily for 5-7 days) can increase muscle creatine stores more quickly. However, it is not essential. Taking 3-5 grams daily will achieve similar levels over several weeks.

Can you take creatine without exercising?

Creatine may still increase muscle stores without exercise, but most creatine benefits are seen when combined with resistance training.