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.

HSPA1L and Heat Shock Protein 70: What Your Genes May Mean for Cellular Stress and Heart Health

Heat shock proteins, especially HSP70, are cellular helpers that protect proteins when cells face stress from heat, infection, or shortages of nutrients. They act like chaperones, refolding damaged proteins or helping remove proteins that cannot be repaired. Proper HSP70 activity supports healthy cell function, reduces harmful inflammation, and helps protect blood vessels from oxidative damage. The HSPA1L gene encodes a version of HSP70. Variations in this gene can slightly change how well HSP70 works, which may influence how your cells respond to stress and how resilient your cardiovascular system is over time.

How HSP70 Affects Health

  • Protects proteins from damage during cellular stress
  • Regulates inflammatory signaling that can affect blood vessel health
  • Helps limit oxidative damage that contributes to aging and cardiovascular disease
  • Supports recovery after exercise and other controlled stressors

Practical Steps to Support HSP70 Function and Cardiovascular Resilience

Regardless of genotype, lifestyle choices strongly influence how well heat shock proteins work. The following strategies help optimize cellular repair systems and cardiovascular health.

  • Controlled thermal stress: Regular sauna sessions, hot baths, or contrast showers can stimulate HSP70 production and improve vascular function.
  • Regular physical activity: Moderate to high intensity exercise transiently stresses cells in a beneficial way, promoting HSP70 expression and metabolic health.
  • Antioxidant rich diet: Eat a variety of colorful fruits, vegetables, nuts, and whole grains to supply polyphenols and vitamins that reduce oxidative stress.
  • Maintain metabolic health: Keep blood sugar and cholesterol in healthy ranges through diet, activity, and medical care when needed.
  • Key nutrients: Ensure adequate magnesium and zinc intake to support cellular stress responses and antioxidant defenses.
  • Sleep and stress management: Aim for consistent, restorative sleep and use relaxation techniques to lower chronic stress that strains cellular repair systems.
  • Avoid exposures that increase oxidative burden: Quit smoking, limit excessive alcohol, and reduce air pollution exposure where possible.

Suggested Supplements and Tests to Discuss with Your Provider

  • Supplements to consider discussing: magnesium (chelate or glycinate), zinc (zinc picolinate or gluconate), and a broad-spectrum antioxidant such as a mixed polyphenol supplement or carotenoid formula if diet is limited.
  • Blood tests to discuss with your provider: fasting glucose or HbA1c, fasting lipid panel, magnesium and zinc status if symptoms or dietary concern, high sensitivity C-reactive protein for inflammation when clinically appropriate.
  • When to get professional guidance: If you have cardiovascular disease, diabetes, or other chronic conditions, speak with your healthcare provider before starting saunas, new supplements, or significant exercise changes.

Genetic Interpretation: rs1043618 (HSPA1L)

Two effect alleles (CC genotype)

The CC genotype means you carry two copies of the effect allele for rs1043618. This variant may reduce the efficiency of HSP70 production or function. When HSP70 activity is lower, cells can be slower to repair damaged proteins and less effective at controlling oxidative stress and inflammation. Over time this can contribute to chronic inflammation and small impairments in endothelial function, which are factors linked to increased risk of heart disease.

Practical recommendations

  • Thermal therapies: Consider regular sauna use or hot baths 2 to 4 times per week if tolerated. Start slowly and avoid prolonged sessions until you know how your body responds.
  • Exercise: Aim for a mix of aerobic and resistance training most days of the week. Include at least 150 minutes of moderate intensity or 75 minutes of vigorous activity weekly plus 2 strength sessions.
  • Diet: Focus on antioxidant rich foods such as berries, leafy greens, nuts, olive oil, and colorful vegetables. Prioritize whole foods over processed options.
  • Micronutrients: Confirm adequate dietary intake of magnesium and zinc. Consider supplementation only after discussing with your provider and checking baseline levels when appropriate.
  • Metabolic health: Monitor and manage blood sugar and cholesterol through diet, exercise, and medical care to reduce stress on vascular cells.
  • Sleep and stress: Prioritize 7 to 9 hours of sleep nightly and use stress reduction practices such as breathing exercises, meditation, or counseling.
  • Medical follow up: Discuss with your provider whether testing such as fasting lipids, glucose or HbA1c, and inflammatory markers would be helpful based on your personal and family history.
One effect allele (CG genotype)

The CG genotype means you carry one copy of the effect allele for rs1043618. This genotype may be associated with a modest reduction in HSP70 function compared to the non-effect genotype. Even a partial change in heat shock protein efficiency can influence how well cells handle oxidative stress and inflammation, modestly increasing long term cardiovascular risk.

Practical recommendations

  • Thermal therapies: Use saunas or hot baths regularly to stimulate HSP70. Begin with shorter sessions and increase gradually while monitoring how you feel.
  • Exercise: Maintain a consistent exercise routine that includes both cardiovascular and resistance training to support cellular resilience.
  • Diet: Emphasize antioxidant foods and anti inflammatory patterns such as Mediterranean style eating to reduce oxidative load on cells.
  • Micronutrients: Make sure dietary patterns include foods rich in magnesium and zinc. Consider checking levels and discussing supplementation with your provider if intake is low.
  • Metabolic and vascular monitoring: Keep blood sugar, blood pressure, and lipids in healthy ranges through lifestyle and medical care when needed.
  • Recovery: Prioritize sleep and active recovery strategies to support protein repair mechanisms after stressors like exercise or illness.
No effect alleles (GG genotype)

The GG genotype means you carry two copies of the non-effect allele. This genotype is associated with typical HSP70 production and function. Your cellular chaperone activity for protein repair and anti inflammatory regulation is expected to operate as usual, supporting healthy responses to stress and protecting vascular function.

Practical recommendations

  • Maintain healthy lifestyle habits to preserve HSP70 function during aging and stress. Regular saunas or hot baths can further boost protective responses.
  • Continue consistent exercise, a diet rich in antioxidants, and habits that support metabolic health.
  • Ensure adequate intake of magnesium and zinc through food and consider testing if you have symptoms or limited intake.
  • Use sleep and stress reduction practices to maintain cellular repair capacity and cardiovascular resilience.

Final Notes and Important Disclaimers

Genetic variation is only one piece of the health picture. Lifestyle, environment, medical history, and other genes also shape outcomes. The information here is educational and intended to help you understand potential genetic influences on HSP70 and related health strategies.

PlexusDx does not provide medical advice. Always consult with your healthcare provider before making changes to your medical care, starting new supplements, initiating sauna therapy, or significantly changing your exercise routine. Your provider can help interpret these genetic results in the context of your medical history and recommend appropriate testing or treatments.

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 HEAT SHOCK PROTEINS and HSPA1L rs1043618

What does the HSPA1L rs1043618 variant mean for cellular stress and inflammation?

HSPA1L provides instructions for making HSP70, a heat shock protein that helps protect proteins during stress (like heat, infection, and nutrient shortages). The rs1043618 effect alleles may slightly reduce HSP70 production or function, which can mean cells are less efficient at repairing damaged proteins and better at controlling oxidative stress and inflammation. Over time, this can contribute to chronic inflammation and subtle endothelial (blood vessel lining) changes linked to cardiovascular risk.

How do CC, CG, and GG genotypes for rs1043618 differ for heart health risk?

CC (two effect alleles) is associated with a greater likelihood of reduced HSP70 activity, which may increase the chances of chronic inflammation and small impairments in endothelial function over time. CG (one effect allele) may be linked to a modest reduction in HSP70 function and a modestly increased long-term cardiovascular risk. GG (no effect alleles) is associated with typical HSP70 production/function, supporting normal protein repair responses and healthy regulation of oxidative stress and inflammation.

What lifestyle steps can support HSP70 and cardiovascular resilience, regardless of genotype?

Strong, genotype-independent strategies include regular physical activity (moderate-to-vigorous exercise plus resistance training), an antioxidant-rich diet (fruits, vegetables, nuts, whole grains/olive oil), and maintaining metabolic health (healthy blood sugar and cholesterol via lifestyle and medical care when needed). Supporting micronutrients like magnesium and zinc, prioritizing 7–9 hours of sleep, managing chronic stress, and reducing oxidative exposures (quit smoking, limit excessive alcohol, reduce air pollution when possible) can all help optimize cellular repair systems and vascular protection. Discuss any new sauna routine, supplements, or major exercise changes with your healthcare provider—especially if you have cardiovascular disease or diabetes.

What tests can help me learn more about HEAT SHOCK PROTEINS and HSPA1L rs1043618?

The Longevity and Healthy Aging Genetic Test delivers over 200 genetic insights related to cellular repair, inflammation balance, metabolism, cardiometabolic health, and aging pathways. The Longevity and Lifespan 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.