HSA | FSA CARDS ARE NOW ACCEPTED

Last reviewed: May 12, 2026 Last updated: May 12, 2026

Written by: Jay Hastings , CEO of PlexusDx

Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations. He has more than 20 years of experience across healthcare innovation, genomics, laboratory operations, healthcare investing, and strategic finance. His work has included scaling healthcare startups, leading CLIA lab integrations, and helping expand consumer access to precision health tools.

Medically reviewed by: Jayden Lee, PharmD, EMBA

Jayden Lee, PharmD, EMBA, is the PlexusDx Medical Science Liaison with a PharmD and MBA specializing in pharmacogenomics and clinical product development, with a proven ability to bridge the gap between genomic research and practical patient outcomes. Dr. Lee has more than 10 years of professional experience in clinical pharmacy, academia, and research.

GATM and Creatine: What Your Genes May Mean for Muscle Energy and Statin Tolerance

Creatine is a small molecule that plays a big role in short-burst energy production for muscles and the brain. Your body makes creatine from amino acids and also gets it from foods such as red meat, poultry, and fish. The GATM gene encodes an enzyme that catalyzes the first step in creatine synthesis. Variations in GATM can change how efficiently your body produces creatine, which may influence muscle performance, recovery, and how you tolerate certain medications like statins.

How GATM Affects Creatine Production

The GATM enzyme converts arginine and glycine into an intermediate compound that eventually becomes creatine. Higher or more efficient GATM activity tends to raise baseline creatine availability in muscle and brain cells. That extra creatine can help buffer energy demands during short, intense activity and may reduce susceptibility to muscle stress. Some GATM variants are associated with differences in the risk of experiencing muscle pain while taking statins, potentially because of altered creatine synthesis.

2 effect alleles — CC genotype (rs1346268)

You carry two copies of the effect allele (CC). This genotype is associated with a reduced risk of statin-related muscle pain and likely indicates higher GATM enzyme activity. That suggests your body may synthesize creatine more efficiently, potentially resulting in higher baseline creatine stores. Higher creatine availability may offer protective benefits for muscle energy and reduce susceptibility to some forms of muscle discomfort. This does not guarantee you will never have muscle symptoms with statins or other stressors.

  • Likely higher GATM activity and creatine production
  • Potentially lower risk of statin-associated muscle pain
  • Still benefit from balanced diet, strength training, and hydration
1 effect allele — CT genotype (rs1346268)

You carry one copy of the effect allele (CT). This genotype is associated with a likely reduced risk of muscle pain while taking statins and likely modestly higher GATM enzyme activity. Your single C allele may increase the efficiency of the initial creatine synthesis step, supporting somewhat higher baseline creatine levels compared with two non-effect alleles. This may confer partial protection against muscle discomfort related to energy stressors.

  • Likely modest increase in GATM activity and creatine synthesis
  • Possible reduced risk of statin-related muscle pain
  • Consider proactive lifestyle and dietary strategies to support muscle creatine
0 effect alleles — TT genotype (rs1346268)

You carry two copies of the non-effect allele (TT). This genotype is associated with typical GATM function and standard creatine production. Your baseline creatine synthesis is expected to be within the typical range. You can still support muscle energy and reduce the chance of muscle complaints through diet, exercise, hydration, and, when appropriate, supplementation.

  • Typical GATM activity and baseline creatine production
  • No known change in statin muscle pain risk from this genotype alone
  • Dietary and lifestyle strategies remain useful to optimize muscle health

Dietary Strategies to Support Creatine and Muscle Health

  • Eat creatine-rich foods: red meat, pork, poultry, and fatty fish such as salmon and tuna are natural dietary sources of creatine.
  • Ensure adequate protein and amino acid intake: arginine and glycine are precursors for creatine synthesis, so a balanced protein intake supports endogenous production.
  • Include carbohydrates around workouts: carbs help refill muscle energy stores and support training performance, which indirectly aids creatine utilization.
  • Consider plant-based adjustments: if you follow a vegetarian or vegan diet, dietary creatine will be low. Discuss supplementation options to maintain muscle creatine stores.

Supplement Considerations

  • Type: Creatine monohydrate is the most studied, affordable, and effective form for increasing muscle creatine stores.
  • Typical dosing: A common approach is a loading phase of 20 grams per day split into 4 doses for 3–7 days followed by a maintenance dose of about 3–5 grams per day. An alternative is to skip loading and take 3–5 grams daily until stores are saturated over several weeks.
  • Timing: Creatine can be taken any time; taking it with a carbohydrate-containing meal or post-workout may enhance uptake into muscle.
  • Hydration: Adequate daily fluid intake supports creatine’s effects and overall muscle function.
  • Precautions: If you have kidney disease or other significant medical conditions, discuss supplementation with your healthcare provider before starting. A baseline check of kidney function may be recommended by your clinician prior to long-term use.

Exercise and Lifestyle Recommendations

  • Strength training: Regular resistance exercise increases muscle creatine uptake and boosts the functional benefits of higher creatine availability.
  • Short high-intensity efforts: Sprinting, interval training, and heavy lifts rely on creatine phosphate pathways and gain the most direct benefit from optimized creatine levels.
  • Recovery strategies: Adequate sleep, progressive training loads, and nutritional recovery support muscle repair and minimize injury risk.
  • Hydration and electrolytes: Stay well hydrated, especially during intense training or heat exposure, to support muscle performance and recovery.

When to Talk to Your Healthcare Provider

  • If you are considering creatine supplementation and have a history of kidney disease, diabetes, or other chronic illness.
  • If you use statin medications and experience new or worsening muscle pain or weakness. Genetic predispositions can influence risk but do not determine outcomes.
  • If you plan to start high-dose or long-term supplementation, especially alongside other medications or treatments.

Practical Takeaways

  • GATM variants can influence how efficiently your body makes creatine, which may alter muscle energy buffering and possibly affect statin-related muscle pain risk.
  • Regardless of genotype, diet, regular resistance training, proper hydration, and targeted supplementation when appropriate are effective strategies to support creatine status and muscle health.
  • If you are on statins or have health conditions, consult your healthcare provider before making supplement or medication changes.

Disclaimer: PlexusDx provides educational information about genetic predispositions only and does not provide medical advice. Always consult with your healthcare provider before starting supplements, changing medications, or making significant lifestyle or dietary changes.

If this genetic variant is present in your PlexusDx results, the following tests and reports are commonly used to explore it further:

🧬 Genetic Tests:

🧪 Blood Tests:

📄 Genetic Report:

Frequently Asked Questions About Creatine and GATM rs1346268

What does the GATM rs1346268 variant mean for creatine production and muscle energy?

The GATM gene helps catalyze the first step in creatine synthesis. Variations in GATM (rs1346268) can affect how efficiently your body produces creatine, which may influence baseline creatine availability in muscle and brain. Higher or more efficient GATM activity can support short-burst energy buffering and may reduce susceptibility to muscle stress during intense activity.

How is the rs1346268 genotype related to statin-associated muscle pain risk?

Some GATM variants are associated with differences in the risk of experiencing muscle pain while taking statins. In the provided results interpretation, the CC genotype (2 effect alleles) and CT genotype (1 effect allele) are both associated with a reduced risk of statin-related muscle pain, likely reflecting altered GATM activity and creatine synthesis. However, genotype does not guarantee outcomes, and new or worsening muscle symptoms should be discussed with a healthcare provider.

What diet, training, and creatine supplementation strategies support muscle creatine by genotype?

Regardless of rs1346268 status, you can support muscle creatine through creatine-rich foods (red meat, poultry, fatty fish), adequate protein for precursor amino acids (arginine and glycine), and carbohydrates around workouts to refill training fuel stores. If you’re plant-based, dietary creatine may be low and supplementation may be considered. Creatine monohydrate is the most studied option; typical approaches include a loading phase (20 g/day split for 3–7 days) followed by 3–5 g/day maintenance, or 3–5 g/day without loading. Take it with a carbohydrate-containing meal for uptake, stay well hydrated, and talk to your clinician first if you have kidney disease or other chronic conditions.

What tests can help me learn more about Creatine and GATM rs1346268?

The Optimal Diet and Weight Loss Genetic Test delivers over 295 genetic insights related to nutrition response, body composition, metabolism, and fitness. The Diet and Nutrition Genetic Report translates your results into personalized, actionable guidance. Your healthcare provider can also recommend targeted blood tests based on your specific pathway results and health history to complement your genetic insights with current biomarker data.

Medical and Editorial Standards

Medical review process: This article was reviewed for medical accuracy, scientific clarity, evidence alignment, and appropriate discussion of genetics, medications, supplements, biomarkers, and health-related claims.

Sources and evidence: PlexusDx educational content is developed using peer-reviewed research, clinical literature, reputable medical references, and, where applicable, public health or regulatory guidance. References are included at the end of the article when scientific, medical, or health-related claims are discussed.

Commercial transparency: PlexusDx offers genetic testing, blood biomarker testing, personalized supplement recommendations, and related precision wellness services. Product mentions are intended to help readers understand available options and should not be interpreted as medical advice.

Important disclaimer: PlexusDx educational content is for informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about medications, supplements, genetic testing, lab testing, or health-related care.