Genetics & Nutrigenomics
Understanding Your Genes
Genes are segments of DNA containing instructions that help cells produce proteins and perform essential biological functions. Every person inherits genetic information from their biological parents, contributing to both shared human characteristics and individual differences.
DNA, Genes & Chromosomes: The Basics
Learn about the relationship between DNA, genes, and chromosomes and how genetic information is organized within the body.
[Talking Glossary of Genetic Terms | NHGRI]
How Do Genes Work?
Explore how genes provide instructions for making proteins and influencing biological processes throughout the body.
[Gene]
Genetics vs. Genomics: What's the Difference?
Learn the difference between studying individual genes and examining the genome more broadly.
[A Brief Guide to Genomics]
Understanding Genetic Variants & SNPs
Human DNA is remarkably similar from one person to another, but small variations occur throughout the genome. One common type of genetic variation is called a single nucleotide polymorphism, or SNP.
SNPs may influence biological processes in subtle ways, but the presence of a particular variant does not necessarily mean that a person has or will develop a disease. Genetics should be interpreted alongside health history, environment, lifestyle, laboratory findings, and other clinical information.
What Are Genetic Variants?
Learn how variations in DNA occur and how they can contribute to individual biological differences.
[Human Genomic Variation]
Understanding SNPs
Explore single nucleotide polymorphisms, one of the most common types of genetic variation among people.
[Single Nucleotide Polymorphisms (SNPs)]
Genes Are Not Destiny
Learn why most health outcomes are influenced by complex interactions among genetics, environment, lifestyle, age, and many other factors.
[Human Genomic Variation]
Epigenetics: How Environment Can Influence Gene Activity
While the DNA sequence itself is generally stable, the activity of certain genes can be influenced by biological and environmental factors through processes collectively known as epigenetics.
Nutrition, environmental exposures, aging, and other factors may influence patterns of gene activity without changing the underlying DNA sequence itself.
What Is Epigenetics?
Learn how chemical modifications can influence whether certain genes are more or less active without altering the DNA sequence.
[Fact Sheets about Genomics]
How Environment & Lifestyle Interact With Gene Activity
Explore the complex relationship among genetics, environmental exposures, nutrition, aging, and other influences on gene regulation.
[A Brief Guide to Genomics]
What Is Nutrigenomics?
Nutrigenomics is the study of interactions among genes, nutrients, and biological processes. It explores how genetic variation may influence the way individuals respond to certain nutrients and how dietary factors may interact with gene expression.
The goal of nutrigenomics is not to identify a single "perfect diet" based solely on DNA. Instead, genetic information may provide one additional piece of information that can be considered alongside symptoms, laboratory findings, health history, lifestyle, medications, and individual goals.
Understanding Nutrigenomics
Learn about the science exploring interactions among genes, nutrition, and health.
[Nutrigenomics: lessons learned and future perspectives - The American Journal of Clinical Nutrition]
What Is Personalized Nutrition?
Explore how individual characteristics—including genetics, metabolism, lifestyle, health status, and the microbiome—may contribute to differences in nutritional needs and responses.
[Precision Nutrition: A Review of Personalized Nutritional Approaches for the Prevention and Management of Metabolic Syndrome - PMC]
Genetics & Nutrient Metabolism
Learn how genetic differences may influence pathways involved in the absorption, transport, conversion, and utilization of certain nutrients.
[MaxGen nutrigenomics materials]
Methylation & One-Carbon Metabolism
Methylation is a fundamental biochemical process involved in DNA regulation, neurotransmitter production, detoxification, energy metabolism, immune function, and normal cellular repair. One-carbon metabolism is a network of interconnected biochemical pathways that depends on nutrients such as folate (vitamin B9), vitamin B12, vitamin B6, riboflavin (vitamin B2), and choline to support these essential functions.
While MTHFR is one of the best-known genes involved in methylation, it is only one piece of a much larger picture. Many other genes influence how the body processes nutrients, responds to oxidative stress, regulates neurotransmitters, metabolizes histamine, supports nitric oxide production, and carries out normal detoxification pathways.
Examples include:
GST & GPX genes – Support the body's antioxidant defenses and glutathione-related detoxification pathways.
MAOA – Influences the metabolism of certain neurotransmitters, including serotonin, dopamine, and norepinephrine.
PEMT – Plays a role in choline metabolism, cell membrane integrity, and liver health.
DAO – Produces an enzyme involved in breaking down histamine from foods and within the digestive tract.
MTRR & MTR – Help recycle vitamin B12 and support normal methylation cycles.
COMT – Helps metabolize catecholamines (such as dopamine and epinephrine) as well as estrogen metabolites. Genetic variants may influence enzyme activity.
NOS3 – Contributes to nitric oxide production, which supports healthy blood vessel function and circulation.
These genes work together as part of interconnected biological pathways rather than functioning independently. Genetic variants may influence how efficiently certain pathways operate, but they do not predict health outcomes on their own. Nutrition, lifestyle, environmental exposures, medications, overall health, and laboratory findings all contribute to how these pathways function in real life.
Understanding Common Nutrigenomic Pathways Learn how genes involved in methylation, detoxification, neurotransmitter metabolism, histamine regulation, antioxidant defense, nitric oxide production, and lipid metabolism work together to support overall health. [The Works! Panel | MaxGen Labs | Genetic Testing Kits]
Understanding MTHFR
Learn about the MTHFR gene, common genetic variants, and their potential effects on folate metabolism.
[MTHFR Gene Variant and Folic Acid Facts | Folic Acid | CDC]
Folate, Vitamin B12 & One-Carbon Metabolism
Explore how folate, vitamin B12, and other nutrients participate in interconnected biochemical pathways throughout the body.
[About Folic Acid | Folic Acid | CDC; B Vitamins and One-Carbon Metabolism: Implications in Human Health and Disease - PMC]
MTHFR Variants: What They Do—and Don't—Mean
Learn why MTHFR results should be interpreted within a broader clinical context rather than treated as a diagnosis by themselves.
[MTHFR Gene Variant and Folic Acid Facts | Folic Acid | CDC]
Oxidative Stress & Antioxidant Pathways
The body continuously produces reactive molecules as a normal part of metabolism. Antioxidant defense systems help maintain balance and protect cells from excessive oxidative stress.
Genetic variations may influence enzymes involved in antioxidant pathways, but genetics are only one part of this complex system. Nutrition, environmental exposures, inflammation, physical activity, and other factors can also influence oxidative balance.
Understanding Oxidative Stress
Learn how oxidative stress occurs and how the body's antioxidant defense systems help protect cells.
[Oxidative stress: an evolving definition - PMC]
Glutathione & Antioxidant Defense
Explore the role of glutathione as one component of the body's endogenous antioxidant systems.
[Glutathione: Overview of its protective roles, measurement, and biosynthesis - PMC]
Detoxification Pathways & Environmental Exposures
The body uses complex enzyme systems to process and eliminate many endogenous compounds, medications, and environmental substances. Genetic variants may influence some of these enzymes, but the term "detoxification" encompasses multiple biological pathways primarily involving the liver, kidneys, gastrointestinal tract, lungs, and other tissues.
Understanding How the Body Processes Substances
Learn about the roles of the liver and other organs in metabolizing and eliminating substances from the body.
[Everyday Toxicology – Digging Deeper, Detoxing Your Body - Center for Research on Ingredient Safety]
Genes, Environment & Health
Learn how genetics and environmental exposures can interact to influence biological responses.
[Human Genomic Variation]
Nutrigenomic Testing
Nutrigenomic testing examines selected genetic variants that may be associated with nutrient metabolism, methylation, antioxidant pathways, neurotransmitter metabolism, cardiovascular factors, inflammatory pathways, and other biological processes.
The exact genes and variants evaluated depend on the test ordered.
Genetic test results should not be interpreted in isolation. A genetic predisposition does not necessarily mean that a person currently has a deficiency, impaired pathway, or disease. Results are most meaningful when considered alongside laboratory testing, symptoms, medical and family history, medications, diet, lifestyle, and other relevant information.
How Does Nutrigenomic Testing Work?
Learn how DNA samples are collected and analyzed for selected genetic variants.
[The Works! Panel | MaxGen Labs | Genetic Testing Kits]
Understanding Your Genetic Test Results
Learn about genotypes, variants, relative risk, and why genetic findings require appropriate context.
[The Works! Panel | MaxGen Labs | Genetic Testing Kits]
Genetic Testing vs. Diagnostic Testing
Understand the important differences between wellness-oriented nutrigenomic testing and genetic testing used to diagnose or assess risk for inherited medical conditions.
[Genetic testing - Mayo Clinic]
Explore Our Genetics & Nutrigenomics Services
For more information about our clinical approach to genetic insights, personalized nutrition, and individualized testing, visit our services page.
