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.

Within the complex field of genetics and health impacts, HDL Cholesterol emerges as a key genetic trait because of its essential function in sustaining our well-being.

HDL cholesterol which is known as the "good" cholesterol functions to remove surplus cholesterol from the body and supports our health and lifespan. While many people think cholesterol is harmful it actually plays a beneficial role in human health. Cholesterol functions as an essential building block that helps to maintain cellular structure and produces essential substances like vitamin D and hormones. The proteins LDL, HDL, and VLDL function as the transport mechanism for cholesterol within the bloodstream. HDL cholesterol earns its "good" designation through its liver cleansing function which eliminates excess cholesterol while LDL and VLDL cholesterol earn their "bad" reputation because they build up cholesterol in the bloodstream and lead to heart disease risks. Normal to high HDL cholesterol levels are linked to lower heart disease risk. Low HDL cholesterol levels can develop from factors such as excess body weight along with smoking habits and metabolic syndrome as well as consuming trans fats and low exercise levels. Recent research shows that while drugs designed to boost HDL cholesterol might help with cholesterol management they do not guarantee a reduced risk of heart disease. According to genetic studies low levels of HDL cholesterol are not solely responsible for heart disease development. Medical professionals propose lifestyle changes together with dietary adjustments to manage cholesterol levels since the interaction between genetic factors and daily habits affects heart health. To improve cholesterol levels people should follow dietary guidelines that include high fiber intake and reduced saturated and trans fats while maintaining regular physical activity and quitting smoking. Genetic predispositions account for up to 65% of the variation found in an individual's cholesterol levels. The genes that influence HDL cholesterol levels participate in cholesterol synthesis and transportation functions and regulate HDL to LDL cholesterol ratios. Genes that regulate cholesterol production (including LPL, LIPC, HMGCR), cholesterol transport (APOB), and HDL-LDL balance (CETP) affect HDL cholesterol levels. One should recognize how genetics combined with lifestyle decisions affects cholesterol levels to improve health and wellness outcomes. Through the Precision Health & Wellness tests from PlexusDx found at PlexusDx.com as well as Amazon and Walmart individuals can understand their genetic tendencies for HDL cholesterol which enables them to make effective choices for better heart health. The combination of genetic understanding and lifestyle changes enables people to actively pursue superior health results through a holistic approach.

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.

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