How ADCY3 Affects Response to a High-Protein Diet
A high-protein diet emphasizes foods such as lean meats, fish, eggs, dairy, legumes, nuts, and seeds to support muscle building, tissue repair, and a healthy metabolism. The ADCY3 gene helps regulate cellular signaling that controls energy use, appetite, and fat storage. Variations in ADCY3 can change how your body partitions energy between fat and muscle when you change your diet. That means two people on the same high-protein plan can have different results for fat loss and lean mass retention.
What this means for your goals
If your ADCY3 genotype reduces the favorable effects of a high-protein diet, you may see less fat loss and more muscle loss than someone without that variant. To get the most from a high-protein approach, match nutrition with targeted exercise, sleep, stress management, and selective supplements. Track body composition rather than weight alone so you can see changes in fat and muscle separately.
Genetic Interpretation
2 effect alleles (GG) — Two copies of the effect allele
The GG genotype at rs10182181 is associated with a reduced fat loss response and greater lean mass loss on high-protein diets. ADCY3 likely shifts how your body decides whether to burn stored fat or break down muscle for energy.
- Practical takeaway: A high-protein diet alone might not protect your muscle or maximize fat loss.
- Nutrition strategy: Consume adequate protein distributed across meals (about 1.2 to 2.0 g per kg of body weight per day depending on activity level), but make sure you include moderate complex carbohydrates around workouts to spare muscle and support performance.
- Exercise: Prioritize resistance training 2 to 4 times per week with progressive overload to stimulate muscle retention. Add some moderate-intensity cardio to support calorie burn without excessive muscle catabolism.
- Supplements to consider: Creatine monohydrate to support muscle strength and mass, and branched chain amino acids or a complete protein source taken around workouts to reduce muscle breakdown.
- Lifestyle: Aim for 7 to 9 hours of quality sleep and include stress reduction practices because poor sleep and chronic stress increase muscle breakdown and impair fat loss.
- Monitoring: Use body composition tools such as DEXA, Bod Pod, or reliable bioelectrical impedance to track lean mass and fat mass rather than relying on scale weight.
- When to see a clinician: If you are losing muscle despite following these strategies or if you have underlying medical conditions, consult your healthcare provider to review medications, hormones, and metabolic health.
1 effect allele (AG) — One copy of the effect allele
The AG genotype at rs10182181 is linked to a milder but still notable tendency for less fat loss and greater lean mass loss during high-protein dieting compared to the AA genotype. ADCY3 influences how energy signals are sent and can make your body more likely to use muscle for energy rather than fat.
- Practical takeaway: A high-protein diet can still work for you, but take extra steps to protect muscle and encourage fat mobilization.
- Nutrition strategy: Maintain a sufficient protein intake distributed across meals. Include moderate complex carbohydrates timed around training sessions to support intensity and reduce muscle breakdown.
- Exercise: Emphasize resistance training with compound movements and progressive overload. Include short metabolic conditioning or interval training to help shift energy use toward fat while preserving muscle.
- Supplements to consider: Creatine for muscle support, and a protein supplement or BCAAs if dietary protein is inconsistent. Vitamin D and omega 3 fatty acids may support muscle function and recovery.
- Lifestyle: Support recovery with consistent sleep and stress management practices such as mindfulness, breathing exercises, or gentle movement on rest days.
- Monitoring: Measure body composition changes over time. Tracking strength and performance in the gym is also a practical proxy for preserved muscle mass.
- When to see a clinician: If body composition worsens despite appropriate steps, seek advice from your healthcare provider for a full evaluation.
0 effect alleles (AA) — Two copies of the non-effect allele
The AA genotype at rs10182181 is associated with a typical response to high-protein diets. People with this genotype are more likely to experience expected benefits such as fat loss while maintaining lean muscle mass when they combine increased protein with appropriate exercise and balanced nutrition.
- Practical takeaway: A high-protein approach is a reasonable strategy for body composition goals for those with the AA genotype.
- Nutrition strategy: Aim for adequate protein intake distributed across meals to support muscle maintenance. Pair protein with healthy fats and carbohydrates for energy and hormone balance.
- Exercise: Continue a regular resistance training program and include cardio as desired for overall health and calorie balance.
- Supplements to consider: Protein powders, creatine for additional muscle support if training intensely, and general micronutrient support if diet is restricted.
- Lifestyle: Maintain good sleep, manage stress, and prioritize recovery to optimize the positive effects of diet and training.
- Monitoring: Regularly check body composition and strength to confirm you are maintaining or building lean mass while losing fat.
Practical Nutrition and Supplement Recommendations
Regardless of genotype, these practices help protect muscle and support healthy fat loss on a higher protein plan.
- Protein distribution: Aim for 20 to 40 g of protein per meal spread across the day. Total intake can range from 1.2 to 2.0 g per kg based on activity and goals.
- Carbohydrates: Include moderate complex carbs such as oats, brown rice, quinoa, sweet potato, and fruit to fuel workouts and spare muscle. Time higher carbohydrate intake before and after resistance training sessions.
- Healthy fats: Include sources like olive oil, avocado, nuts, seeds, and fatty fish to support hormones and satiety.
- Creatine monohydrate: 3 to 5 g daily can improve strength and help preserve lean mass with resistance training.
- Protein supplements or BCAAs: Useful when dietary protein is insufficient or to support peri-workout nutrition.
- Micronutrients: Ensure adequate vitamin D, magnesium, and omega 3 fatty acids for recovery and metabolic health.
Lifestyle Practices to Support Body Composition
- Resistance training: 2 to 4 sessions per week focused on progressive overload to stimulate muscle maintenance and growth.
- Cardio: Moderate cardio or interval training 2 to 3 times per week to support cardiovascular health and fat loss, while avoiding excessive volume that could increase muscle breakdown.
- Sleep: 7 to 9 hours per night to support recovery, hormone balance, and metabolic health.
- Stress management: Practices such as mindfulness, breathwork, short walks, and regular recovery days to keep cortisol in a healthy range.
- Hydration and meal timing: Stay hydrated and prioritize protein and carbohydrates around training sessions for performance and recovery.
Recommended Tests and Monitoring
- Body composition: Use DEXA, Bod Pod, skinfolds, or consistent bioelectrical impedance to track fat mass and lean mass.
- Strength and performance metrics: Track lifts, reps, and exercise progress as indicators of muscle health.
- Basic labs to consider with your clinician: fasting glucose, lipid panel, thyroid function, vitamin D, and other tests your healthcare provider recommends based on history.
Important Notice
PlexusDx provides educational information about genetic predispositions only. This content is not medical advice. Always consult with your healthcare provider before making changes to your diet, exercise, supplements, or medical care. Your clinician can combine genetic information with your medical history, current health status, medications, and laboratory results to create a safe, personalized plan.

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Vitamin C | SLC23A1 (rs10063949)
Vitamin C | SLC23A1 (rs10063949)