Creatine supplement: benefits well beyond sport

For thirty years, creatine has been filed under "bodybuilder products." That is probably the most persistent misunderstanding in the supplement aisle. Research over the last few years has shifted toward territory that concerns far more people: mental fatigue, maintaining muscle mass as we age, and plant-based diets. Here is where things actually stand.

A quick reminder: what creatine actually does

Creatine is a molecule the body produces on its own, from three amino acids, glycine, arginine, and methionine. It is also obtained through food, primarily from meat and fish.

About 95% of stores are found in skeletal muscle, in the form of phosphocreatine. Its role: rapidly regenerate ATP, the cell's energy currency, during short, intense efforts. It is an emergency energy system, available within seconds.

The detail most people miss: this system is not exclusive to muscle. The brain is an enormous energy consumer and has its own creatine stores. That is the source of all the current interest.

The brain: the most active area of research

Work conducted over the past fifteen years has focused on creatine in situations where the brain is running an energy deficit.

Two contexts come up repeatedly:

• Sleep deprivation. Several trials have examined the cognitive performance of supplemented participants after shortened nights. Results suggest a partial maintenance of affected functions, particularly reaction time and mood.

• Intense mental load. Demanding, repetitive cognitive tasks locally deplete energy stores. This is the scenario in which additional intake seems most likely to make a difference.

One interesting finding appears across several studies: vegetarians respond more strongly. This makes sense, since their baseline stores are lower. In a heavy meat eater, the margin for improvement is smaller.

To be measured about it: this is not a product that makes you smarter. It is an energy buffer that appears to help when the system is under pressure.

Aging, muscle mass, and independence

This is the most promising use for the general population, and it has nothing to do with performance.

Starting around the forties, muscle mass progressively declines, a phenomenon that accelerates with age called sarcopenia. The consequences are not aesthetic: loss of strength, difficulty getting up from a chair, risk of falls, loss of independence.

Creatine combined with resistance training is one of the most well-documented strategies for slowing this decline. The key word is combined: without resistance exercise, the effect is far more modest. The supplement does not replace training, it amplifies its results.

Two resistance training sessions per week, even with light weights or resistance bands, are enough to create the context in which creatine becomes useful.

Plant-based diets: the clearest case

Vegans and vegetarians obtain no creatine from food. Their bodies produce it, but their muscle and brain stores are measurably lower than those of omnivores.

This is precisely why they are among the strongest responders to supplementation, both muscularly and cognitively. If you have removed meat from your diet, creatine is probably the supplement with the best cost-benefit ratio after vitamin B12 and omega-3s.

Our article Are you a good candidate for vegetarianism covers the adjustments to plan for this type of diet. On the protein side, The secret of proteins explains how to meet your needs without animal products, a prerequisite before even thinking about supplements.

How to take it, practically

Good news: this is one of the simplest protocols in the aisle.

Question	Practical answer
Which form?	Monohydrate. This is the form studied in the vast majority of trials, and the least expensive. "Advanced" versions have not demonstrated superiority.
What dose?	3 to 5 g per day, every day.
Is a loading phase necessary?	Optional. About 20 g per day split into four doses over 5 to 7 days saturates stores faster. Without loading, the same point is reached in three to four weeks.
When?	Anytime. Consistency matters, timing does not.
With what?	A little water or a beverage. Taking it with a meal containing carbohydrates may support absorption.
Do you need to cycle?	No data requires cycling. Long-term studies involve continuous use.

One often overlooked point: stay hydrated normally. Creatine draws water into the muscle cell — that is the intended effect. It does not require drinking three extra litres per day, but adequate hydration remains the baseline.

The myths still circulating

"It is hard on the kidneys." In healthy adults, long-term follow-up data have not shown kidney damage. The confusion stems from the fact that creatine raises blood creatinine, a marker used to assess kidney function. The marker rises; kidney function does not change. Mention your supplementation to your doctor before bloodwork to avoid a false alarm. Any pre-existing kidney disease changes the picture and requires medical guidance.

"It causes hair loss." This idea rests on a single small older study, never replicated since. The link has not been established.

"It causes bloating." The water retained stays inside the muscle, not under the skin. The scale may go up by one or two kilos in the first weeks: that is intramuscular water, not fat.

"It is a steroid." No. It is a dietary molecule naturally present in meat and fish, and produced by your own liver.

"It is for men only." Nothing justifies this. Women generally have lower creatine stores, and research is increasingly examining its effects at different stages of hormonal life.

Choosing a product without going wrong

The aisle is straightforward, which is a relief:

• Look for the label creatine monohydrate, without unnecessary additives.
• Check for a Natural Product Number (NPN) on the container, required for any natural health product legally sold in Canada.
• Unflavoured powder is generally less expensive than capsules and allows dose adjustment by the spoonful.
• Be wary of pre-workout formulas where creatine appears in a token dose, buried among twelve other ingredients.

You will find creatine and other training essentials in our sport nutrition section. To cover the protein base, especially in a plant-based diet, our protein foods and legumes section offers several options.

Who should speak to a professional first

• People with a known kidney disease or renal risk factor.
• Pregnant or breastfeeding women, due to insufficient data.
• People taking medications that strain kidney function.
• Teenagers, for whom diet and training should take priority.

Our licensed naturopaths offer personalized consultations in store and remotely, and can help you place creatine within your overall routine.

Frequently asked questions

How long before seeing an effect?

With a loading phase, stores are saturated in about one week. Without loading, allow three to four weeks. Benefits on strength and muscle mass are then measured over several months of training.

Is it useful if I do not train at all?

Muscular benefits require a training stimulus. The cognitive avenues do not depend on exercise. That said, the best return always comes from combining both.

Can you get enough from food alone?

You would need to consume about one kilogram of red meat or fish per day to reach the studied doses. Not realistic, and expensive.

Do you need to stop after a few months?

Nothing indicates so. Long-term trials involve continuous use in healthy adults. Upon stopping, stores gradually return to their baseline level over four to six weeks.

Does creatine suppress appetite or cause fat gain?

Neither. It provides virtually no calories and has no demonstrated effect on appetite.

A supplement that has changed its audience

Creatine is no longer a gym product. It is an energy buffer that now interests research on mental fatigue, muscle mass maintenance after forty, and diets without animal products. The protocol is simple, the preferred form is monohydrate, and the cost is among the lowest in the aisle.

Come discuss it with us at one of our four locations in the Gatineau region. Our team will help you determine whether creatine belongs in your routine, and choose a product that is genuinely worth what it costs.

References

1. A review of creatine supplementation in age-related diseases: more than a supplement for athletes. PMC, National Institutes of Health. 2015. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4304302/

2. Gordji-Nejad A et al. Single dose creatine improves cognitive performance and induces changes in cerebral high energy phosphates during sleep deprivation. Scientific Reports. 2024. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10902318/

3. Brosnan ME, Brosnan JT. The metabolic burden of creatine synthesis. Amino Acids. 2011. https://link.springer.com/article/10.1007/s00726-011-0853-y

4. Farshidfar F et al. The impact of creatine supplementation associated with resistance training on muscular strength and lean tissue mass in the aged: a systematic review and meta-analysis. European Review of Aging and Physical Activity. 2025. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12752335/

5. Lugaresi R et al. Is it time for a requiem for creatine supplementation-induced kidney failure? A narrative review. PMC, National Institutes of Health. 2023. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10054094/

6. Effect of creatine supplementation on kidney function: a systematic review and meta-analysis. BMC Nephrology. 2025. https://link.springer.com/article/10.1186/s12882-025-04558-6