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.

How Your PPARD Gene Can Influence HDL Response to Exercise

HDL cholesterol, often called good cholesterol, helps protect heart health by removing excess cholesterol from the bloodstream. While regular physical activity commonly raises HDL, individual responses vary. One reason is genetics. The PPARD gene plays a central role in fat and carbohydrate metabolism and influences how much HDL increases after exercise. Variations at the rs2016520 location in PPARD can modify the HDL response to training. Understanding your genotype can help you tailor diet, exercise, and lifestyle choices to support healthy cholesterol levels.

How PPARD Affects HDL and Heart Health

PPARD is involved in energy regulation and how muscles use fats during activity. Depending on which version of the gene you have, your body may respond differently to the same exercise program. Some variations are linked to smaller increases in HDL with training, while others show typical improvements. Importantly, even if your genotype predicts a reduced HDL response to exercise, physical activity still offers broad cardiovascular benefits including reductions in total cholesterol and triglycerides, improved fitness, and metabolic health.

Practical Strategies to Support Healthy HDL

Whether your genes predict a strong or modest HDL increase from training, combining exercise with targeted diet and lifestyle strategies gives you the best chance to protect your heart.

  • Cardiovascular and resistance exercise: Aim for at least 150 minutes per week of moderate intensity aerobic activity or 75 minutes of vigorous activity, plus two sessions per week of resistance training. Interval training and longer duration activities can be particularly effective for improving lipid profiles.
  • Healthy fats: Emphasize foods rich in omega-3 fatty acids and monounsaturated fats. Examples include fatty fish like salmon and mackerel, walnuts, flaxseeds, chia seeds, and olive oil. These support healthy HDL and triglyceride levels.
  • Fiber and whole foods: Increase soluble fiber from oats, legumes, fruits, and vegetables. Fiber supports cholesterol balance and overall heart health.
  • Avoid smoking: Smoking lowers HDL and damages blood vessels. Quitting smoking improves HDL and reduces cardiovascular risk quickly.
  • Maintain a healthy weight: Weight loss when needed often raises HDL and lowers triglycerides and total cholesterol.
  • Limit added sugars and refined carbs: High intake of added sugars can raise triglycerides and reduce HDL. Focus on whole grains and limit sugary beverages and sweets.
  • Alcohol: Moderate alcohol intake may modestly raise HDL in some people, but benefits must be weighed against risks. Discuss alcohol use with your healthcare provider.

Supplements and Medical Considerations

Supplements can help some people, but discuss with your healthcare provider before beginning any new supplement.

  • Fish oil (omega-3): Can lower triglycerides and support overall lipid balance. Typical doses vary by need and provider guidance.
  • Niacin (vitamin B3): Known to raise HDL in some cases, but can have side effects like flushing and impacts on blood sugar and liver function. Use only under medical supervision.
  • Plant sterols and stanols: May reduce LDL cholesterol and support heart health when used with a healthy diet.
  • Vitamin D and magnesium: Important for general metabolic health and often checked if deficiency is suspected.

Blood Tests and Monitoring

Work with your healthcare provider to monitor lipid levels and overall cardiovascular risk. Typical tests and checks include:

  • Lipid panel: HDL, LDL, total cholesterol, triglycerides
  • Fasting glucose and hemoglobin A1c for metabolic health
  • Liver function tests when taking certain supplements like niacin
  • Blood pressure, body weight, and waist circumference

Genetic Interpretation: PPARD rs2016520

2 effect alleles (CC genotype)

You carry two copies of the C allele at rs2016520 in the PPARD gene. This genotype is associated with a smaller increase in HDL cholesterol in response to exercise training compared to other genotypes. Even though your HDL may not rise as much with exercise alone, physical activity still benefits heart and metabolic health and can lower total cholesterol and triglycerides.

Actionable recommendations for CC genotype:

  • Combine regular aerobic and resistance training with dietary strategies that emphasize omega-3 rich foods and healthy fats.
  • Focus on weight management and reducing refined carbohydrates to improve triglycerides and overall lipid balance.
  • Discuss with your healthcare provider whether fish oil or other supplements like niacin are appropriate for you given your health history and blood tests.
  • Monitor lipids regularly and work with your provider to tailor interventions if HDL remains low despite lifestyle changes.
1 effect allele (CT genotype)

You have one copy of the C allele at rs2016520. This balanced genotype often results in a modest HDL response to exercise. The C allele can be linked to smaller HDL increases while also supporting reductions in total cholesterol and triglycerides with training.

Actionable recommendations for CT genotype:

  • Maintain a consistent exercise program blending aerobic sessions and strength training to maximize metabolic benefits.
  • Emphasize a heart-healthy diet with omega-3 foods, monounsaturated fats, whole grains, and fiber.
  • Avoid smoking and limit added sugars to help raise HDL and lower triglycerides.
  • Consider discussing targeted supplements with your healthcare provider if blood tests suggest additional support is needed.
0 effect alleles (TT genotype)

You carry two copies of the T allele at rs2016520. This genotype is associated with a typical or expected HDL response to physical activity. Regular exercise is likely to raise your HDL effectively, supporting the removal of excess cholesterol from your bloodstream and contributing to heart protection.

Actionable recommendations for TT genotype:

  • Continue consistent aerobic and resistance exercise to maintain and boost HDL.
  • Follow a balanced diet rich in healthy fats, fiber, and whole foods to complement exercise benefits.
  • Maintain healthy habits such as not smoking, moderate alcohol use if any, and weight management to preserve HDL gains.
  • Monitor lipid levels periodically to ensure continued heart health and to guide any needed adjustments.

Summary

Your PPARD rs2016520 genotype can influence how much your HDL rises with exercise, but lifestyle remains the most powerful tool for heart protection. Combining regular physical activity with a diet rich in omega-3s and healthy fats, avoiding smoking, managing weight, and working with your healthcare provider on appropriate supplements and testing gives you the best chance to optimize HDL and overall cardiovascular health.

PlexusDx does not provide medical advice. This information is educational only. Always consult your healthcare provider before making changes to medications, supplements, diet, or exercise routines, or before acting on genetic results.

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 HDL Cholesterol and PPARD rs2016520

How does the PPARD rs2016520 variant affect HDL response to exercise?

The PPARD gene influences fat and carbohydrate metabolism and can modify how much HDL (“good cholesterol”) increases after training. At rs2016520, different genotypes are associated with a smaller HDL rise (such as the CC genotype), a modest response (CT), or a typical/expected HDL response (TT). Even if HDL doesn’t rise as much as expected, exercise still supports overall cardiovascular and metabolic health.

What HDL-related heart benefits still apply if my rs2016520 genotype predicts a smaller HDL increase?

Yes—reduced HDL response to exercise does not eliminate cardiovascular benefits. Physical activity can still help lower total cholesterol and triglycerides, improve fitness, and support metabolic health. Lifestyle changes combined with exercise can further strengthen lipid outcomes, even when HDL changes are more modest.

What diet and lifestyle strategies work best to support HDL with PPARD rs2016520 results?

Combine cardiovascular and resistance exercise (e.g., at least 150 minutes/week moderate aerobic activity or 75 minutes/week vigorous plus two resistance sessions), emphasize omega-3 and monounsaturated fats (fatty fish, olive oil, walnuts, flax/chia), and increase soluble fiber (oats, legumes, fruits, vegetables). Avoid smoking, limit added sugars and refined carbs, manage healthy weight, and consider discussing supplements with your healthcare provider if needed. Regular monitoring with a lipid panel and related metabolic markers can help tailor next steps.

What tests can help me learn more about HDL Cholesterol and PPARD rs2016520?

The Functional Health Genetic Test delivers over 750 personalized genetic insights across 10 in-depth genetic reports to support whole-body, systems-level health understanding. The Fitness and Injury 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.