by Clare Kennedy
Level 4 personal trainer UCD, Certified nutritionist with MAC Nutrition
My passion is helping people reach goals they have struggled to achieve. While weight loss and body composition are the most active part of my practice, I also work with clients diagnosed with conditions such as osteoporosis and sarcopenia.
For people over 35, staying strong, maintaining muscle mass, and keeping energy levels high are top priorities. This particularly so for women as they move through perimenopause and into menopause, the decline in hormones like oestrogen can accelerate muscle and bone loss (sarcopenia and osteoporosis). This is where nutritional supplements, and specifically creatine, often come into the conversation.
Once largely considered a supplement for male bodybuilders, mounting research is highlighting the significant, unique benefits of creatine for women. Importantly, these science-backed advantages are maximized especially for those who are committed to a consistent strength training routine—as creatine acts as a powerful enhancer to the hard work you are already putting in.
If you’re considering adding creatine to your routine, here is a balanced look at the science-backed pros and cons.
The pros: Why creatine could be a powerful ally
Creatine is a naturally occurring compound, with about half of our supply produced by the body and the rest coming from dietary sources like red meat and fish. As a supplement, its primary role is to help your muscles produce energy quickly, which translates to several key advantages for people 35+:
The gold standard of supplementation and safety
Let me start with an important point that often gets overlooked: Creatine is one of the most extensively researched supplements on the market. Hundreds of peer-reviewed studies support its effectiveness and, critically, its safety profile. For years, the scientific community has consistently affirmed that when taken at recommended doses by healthy individuals, creatine is incredibly safe. This extensive body of research is a massive vote of confidence for those of us who prioritise evidence-based wellness.
Boosted strength and muscle mass
This is creatine’s most well-known benefit. Creatine allows you to perform more high-quality work during resistance training (lift heavier, do more reps). This cumulative extra work signals your muscles to grow and adapt.
The benefit for 35+: Combining consistent strength training with creatine supplementation has been shown to increase lean muscle mass gains and strength to a greater degree than lifting alone, effectively combating age-related muscle loss.
Enhanced bone health
Bone density is a significant concern for women in this age group due to hormonal changes. Creatine appears to play a role in bone cell regeneration.
The benefit for 35+: Studies suggest that in postmenopausal women, combining resistance training with creatine may help reduce the rate of bone mineral density loss, particularly in critical areas like the hip, which can decrease the risk of osteoporosis-related fractures.
Improved cognitive function and mood
Your brain uses creatine to maintain energy balance. Research shows that women tend to have naturally lower brain creatine levels than men, which may make them more responsive to the supplement’s cognitive effects.
The Benefit for 35+: Creatine has been linked to reduced mental fatigue, improved working memory, and enhanced cognitive processing, especially during periods of stress or sleep deprivation. Some evidence also suggests it may help improve mood and support a positive outlook.
Better exercise performance and recovery
By replenishing your muscles’ immediate energy source, creatine can help you power through intense, short-burst activities (like your last set of squats or a HIIT sprint).
The Benefit for 35+: It may help reduce muscle damage and speed up recovery after intense workouts, allowing you to be consistent with your training without feeling overly fatigued.
The cons: What to consider before starting
While creatine is one of the most studied and safest supplements available, there are a few considerations to keep in mind, particularly for a well-informed audience:
Temporary water retention
Some women report a slight weight gain or feeling of bloating during the initial phase of taking creatine. This is not fat gain; it’s water being pulled into your muscle cells, which is part of the mechanism that helps them grow.
Mitigation: This is more common with a “loading phase” (high doses for a short time). Sticking to a consistent, lower daily maintenance dose (typically 3–5 grams) often avoids this initial water retention.
Digestive discomfort
In some cases, high doses may lead to minor gastrointestinal issues such as stomach discomfort, nausea, or diarrhea.
Mitigation: Again, a standard daily dose is usually well-tolerated. Ensure you mix the powder completely with plenty of water. Choosing a high-quality, reputable brand of creatine monohydrate (the most studied form) can also help.
Interaction with pre-existing conditions
Though considered safe for most healthy people, creatine can increase levels of creatinine, a substance often used to check kidney function.
Important note: If you have a pre-existing kidney condition, it is essential to consult with your healthcare provider before starting creatine supplementation. This allows them to monitor your specific health markers appropriately.
Consistency is key (and cost)
To reap the long-term benefits for muscle, bone, and brain health, creatine needs to be taken daily, even on rest days. Like any supplement, this adds a small recurring cost and requires discipline.
Recommendation: View it as a nutritional investment in your long-term health and strength, similar to taking vitamin D or collagen.
The verdict
For women over 35 who are already engaged in a consistent strength training routine, the benefits of creatine—particularly for retaining muscle and supporting bone density as you navigate hormonal changes—are compelling and largely outweigh the potential minor side effects. Given the overwhelming amount of research confirming its efficacy and safety, it’s one of the few supplements I confidently recommend for this age group.
Actionable advice:
- Consult: Always discuss new supplements with your doctor or a registered dietitian, especially if you have existing health concerns.
- Dose: Aim for the maintenance dose of 3 to 5 grams of creatine monohydrate daily. There is no need for a “loading phase.”
- Hydrate: Creatine works by pulling water into the muscles, so ensure you are adequately hydrated throughout the day.