Creatine has become one of the most popular supplements in gyms, sports clubs, and online fitness communities. Although it is often associated with bodybuilding, it is not a steroid, hormone, or stimulant. It is a naturally occurring substance that the body produces and uses to supply energy to the muscles.
What Is Creatine?
Creatine is made from three amino acids: arginine, glycine, and methionine. The liver, kidneys, and pancreas help produce it, while small amounts are obtained from foods such as red meat, pork, and fish. People who eat little or no animal protein may have lower creatine stores.
Most of the body’s creatine is stored in the skeletal muscles as phosphocreatine. During short bursts of intense activity, phosphocreatine helps the body rapidly regenerate adenosine triphosphate, commonly known as ATP.
ATP is the body’s main source of cellular energy. However, the muscles can store only a limited amount, which is one reason they tire during activities such as sprinting, jumping, or heavy lifting. Increasing the muscles’ creatine stores may help them produce energy for slightly longer.
What Are the Potential Benefits?
Creatine is most effective during repeated bursts of high-intensity exercise. It may help improve strength, power, and training performance, particularly when combined with resistance training.
The difference during one workout may be modest. However, being able to complete an extra repetition, lift a slightly heavier weight, or maintain intensity for longer may lead to greater improvements in strength and muscle mass over time.
Creatine may also help older adults preserve muscle mass, strength, and physical function when combined with appropriate exercise. Researchers are investigating its possible effects on memory, recovery, brain health, and certain medical conditions, but the evidence for many of these uses is still developing.
Creatine does not burn fat directly and is not a shortcut to fitness. It cannot replace regular exercise, a balanced diet, adequate protein, or enough sleep.
Is Creatine Safe?
Creatine monohydrate is the best-researched form. Current evidence indicates that it is generally safe for healthy adults when used in recommended amounts.
A common maintenance amount is three to five grams daily. Some people start with a “loading phase” of approximately 20 grams per day, divided into four smaller servings, for five to seven days. This fills the muscles’ creatine stores more quickly, but loading is not essential. Taking three to five grams daily can achieve a similar result more gradually.
Taking more than the recommended amount does not necessarily produce better results and may increase the risk of digestive discomfort.
Children and teenagers should not use creatine unless it has been recommended and supervised by a suitably qualified healthcare professional.
Does Creatine Damage the Kidneys?
Research has not shown that recommended amounts of creatine damage healthy kidneys. However, anyone with kidney or liver disease, another chronic health condition, or who takes regular medication should consult their doctor before using it. Professional advice is also important during pregnancy or breastfeeding.
Creatine may increase the amount of creatinine measured during a blood test. Creatinine is used to help assess kidney function, but an increase in someone taking creatine does not automatically mean kidney damage has occurred. People taking creatine should tell their doctor about the supplement before undergoing blood tests so the results can be interpreted correctly.
Are There Side Effects?
The most noticeable effect may be a small increase in body weight during the first few weeks. This is usually caused by additional water being stored inside the muscles rather than increased body fat.
Some people experience bloating, nausea, diarrhoea, or stomach cramps, particularly when taking large amounts at once. Using a smaller daily serving and taking it with food may help.
Research does not support the common belief that creatine causes dehydration or muscle cramps in healthy users. However, drinking enough water remains important, especially when exercising intensely or in hot weather.
Choosing a Creatine Supplement
Creatine monohydrate is generally the simplest, most thoroughly researched, and most affordable option. More expensive forms have not consistently been shown to work better.
Choose a product from a reputable supplier with clearly listed ingredients and independent quality or batch testing. Avoid supplements containing undisclosed “proprietary blends”, unnecessary stimulants, or exaggerated promises.
Conclusion
Creatine can support strength and repeated high-intensity exercise performance, but it should be used responsibly and alongside healthy lifestyle habits. Anyone with a medical condition, taking regular medication, or unsure whether creatine is suitable for them should first speak to their doctor.
Affinity Health’s Day-to-Day Plan gives members access to unlimited 24/7 telephonic health advice and nurse consultations, as well as unlimited in-network GP consultations via referral, making it easier to obtain professional advice about creatine and other supplements before using them.
