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Vitamins & Nutrients: Exploring Nutrigenomics

Your genes influence how well your cells absorb, transport, and utilize nutrients. We are all genetically different, and your genes give you unique dietary needs and strengths. Genetic data can give you a starting point to know where you may need more – or less – of a specific nutrient. It can also point to problems with specific foods, like dairy, or with a component of foods, like histamine or tyramine.

Here you will find the tools you need to dial in your nutrition. This isn’t a one-size-fits-all approach! No protocols here… Instead, you’ll learn which nutrients are likely important for you, and then pick from possible solutions in the Lifehacks section.

Members: Check out your Vitamins & Nutrients Summary Report


Vitamins & Micronutrients

Vitamins and micronutrients interact with genetic variants related to their absorption, transport into cells, conversion into their active form, and serum levels.

MTHFR mutations explained, frequency of C677T SNP, A1298C SNP, Supplement Interaction, MTHFR variant risks

MTHFR Gene Explained: C677T and A1298C Variants, Testing, and Solutions

MTHFR C677T and A1298C variants can alter how your body utilizes folate (vitamin B9) for creating neurotransmitters, detoxifying toxicants, and maintaining a healthy heart. MTHFR is a key gene in the methylation cycle.

Vitamin B6 deficiency genes, foods high in vitamin B6

Vitamin B6: Genetics, Absorption, and Deficiency

Vitamin B6 is an important co-factor in hundreds of different enzymatic reactions. Genes involved in vitamin B6 activation, transport, and metabolism can contribute to low B6 availability. Low levels of B6 are linked to an increased risk of diabetes, cardiovascular disease, neurodegenerative diseases, and cancer.

Thiamine Genetics, foods high in thiamine, thiamine transporters

Thiamine: Genomics, Cellular Energy, and Cognitive Function

Thiamine (vitamin B1) is essential for energy production and brain function. Learn how SLC19A2, SLC19A3, and other genes affect your need for thiamine.

MMUT Gene: Genetics, B12 Status, and Mitochondrial Function

MMUT Gene Variants & Methylmalonic Acid (MMA): B12 Status & Genetics

MMUT gene variants affect how your body uses B12 for mitochondrial energy. Learn how MMA testing reveals intracellular B12 deficiency and which form of B12 can help.

MTR and MTRR genetic variants, Vitamin b12 genetic variants, choosing the right form of B12 for your genetic variants

Vitamin B12, MTR & MTRR, and Methylation

Variants in B12 absorption, transport, and methylation, including MTR and MTRR, can affect your need for vitamin B12. Some people may need a little more B12, and others may thrive on different forms of B12.

Types of Choline, Choline Genes, Foods high in Choline

Which Type of Choline Works Best with Your Genes?

PEMT, MTHFD1, and CHKA genes can affect your need for choline and how it is metabolized. Compare food sources and supplement forms, including citicoline, alpha-GPC, PC, and betaine.

Vitamin B5 is pantothenic acid. It is essential for many biochemical reactions in the body.

Vitamin B5 (Pantothenic Acid): Genetics, Deficiency, and Neurodegenerative Disease

Pantothenic acid (vitamin B5) is essential for coenzyme A synthesis and brain energy. Learn about B5 deficiency, PANK2 mutations, and links to Alzheimer’s.

Choline, An Essential Nutrient Impacted By Genes, PEMT Gene variants and CHKA Gene, Cholinergic Anti-Inflammatory Pathway

Choline, An Essential Nutrient Impacted By Genes

Your need for choline depends on genes such as PEMT and CHKA. Learn how your genes may affect how much you need from your diet.

BCO1: Vitamin A from Beta Carotene

BCO1 Gene: Converting Beta-Carotene to Vitamin A

BCO1 variants can reduce the conversion of beta-carotene into the active form of vitamin A (retinol). Find out how to check your genotype and which form of vitamin A may be most ideal for you.

Biotin Genetic Variants, Biotin deficiency symptoms, foods high in biotin

Biotin Deficiency: Genetic Reasons for Increasing Biotin

Biotin, also known as vitamin B7 or vitamin H, is a cofactor that aids in the metabolism of fats, carbohydrates, and proteins. Biotin deficiency due to diet is pretty rare, but there are genetic variants that can increase your risk for biotin deficiency or insufficiency.

Genetics and Vitamin D Levels

Vitamin D Genes

Genetic variants can affect vitamin D synthesis, transport, activation, and receptor signaling. Learn more about how vitamin D is synthesized in the body and how your genetic variants impact your levels.

Vitamin C: Nutrigenomics, Transport, and Genetic Deficiency, Vitamin C transport genes SLC23A1, SLC23A2. Food sources of vitamin C

Vitamin C: Nutrigenomics, Transport, and Genetic Deficiency

Genetic variants in SLC23A1 and SLC23A2 affect vitamin C absorption and blood levels. Learn how your genes affect your need for vitamin C.

Riboflavin (Vitamin B2): MTHFR and FMO3 SNPs

Riboflavin (Vitamin B2), MTHFR, and Deficiency Symptoms

Riboflavin (vitamin B2) affects MTHFR genes, methylation, and energy. Find out the deficiency symptoms, food sources, dosage, and whether you need more based on your genetics.

DHFR and MTHFR: Folic Acid Metabolism, excess folic acid, the folate cycle

DHFR and MTHFR: Folic Acid Metabolism

DHFR and MTHFR variants affect folic acid metabolism, unmetabolized folic acid, cancer and autism risk, and BH4 recycling. Find out how to choose the right folate supplement for your genes.

Folate receptor genetic SNPs

FOLR1 and FOLR2: Transporting Folate, Folinic Acid, and Folic Acid into Cells

Genetic variants in the FOLR1 and FOLR2 genes (folate receptors alpha and beta) can impact folate in the brain and in the immune response.

Importance of balancing folate, problems with too little folate, caution with too much folate, RDA for folate intake

Folate Intake: How Much Is Too Much for Optimal Health?

Folate is essential, with many benefits from getting an adequate amount. However, excess folate from high-dose supplements may have potentially detrimental effects.

Vitamin K genetic variants, vitamin k and bone health

Vitamin K: Bone Strength, Blood Clots, Calcification, and Genetics

Genetic variations cause people to have higher or lower levels of vitamin K, which can affect blood clotting. Learn more about the genes that affect vitamin K and how it relates to your genetic raw data.

Vitamin E, Genetics, and Inflammation

Vitamin E, Genetics, and Inflammation

Vitamin E metabolism and supplementation response can vary by genotype. Learn how genes influence the antioxidant response, inflammation, and cardiovascular disease risk.

Overview graphic showing how common prescription medications can deplete specific vitamins and minerals, with genetics and diet influencing individual nutrient needs.

Drug-Induced Depletions: Medications and Missing Micronutrients

Common medications can deplete micronutrients, especially when combined with a genetic susceptibility to lower levels of certain vitamins or minerals. If you’re on any prescription drugs, check your genes and consider testing your micronutrient levels.

Nutrition, Genetics, and Pregnancy

Pregnancy: How Your Genes Affect the Nutrients You Need

Pregnancy is a time of increased demand for key nutrients. Understanding your folate, choline, DHA/EPA, and detoxification genes can help you dial in your diet to prevent nutrient deficiencies with the help of your doctor.


Minerals & Trace Elements

Minerals are essential in the right amount as micronutrients incorporated into proteins or acting as cofactors in cellular reactions. Genetic variants can affect mineral absorption and use in the body, but often testing is needed to know your levels before making any changes.

Genes That Impact Magnesium Deficiency, magnesium transport and magnesium reuptake, foods high in magnesium

Magnesium Deficiency? Genes that Impact Magnesium Levels

TRPM6, TRPM7, and CNNM2 affect how well your body absorbs and retains magnesium. See your genotype report for Mg deficiency, symptoms and test, magnesium-rich foods, and types of supplements.

Nutrigenomics and the SNPs related to zinc, inflammation, and diabetes

Zinc, Genetics, and Your Risk for Depression, Infection, or Diabetes

Zinc transporter and metabolism genes influence your zinc status. Zinc is essential for immunity, skin, mood, and blood sugar, and your genes can change how much you need – and how zinc absorption may interact with other minerals.

Wilson's Disease, ATP7B Gene mutations, role of zinc balancing heavy metals

Wilson’s disease: ATP7B Gene Mutations and Copper Accumulation in the Brain

Mutations in ATP7B can impair copper transport and cause Wilson’s disease. People carrying a single ATP7B mutation may also have subtle changes in copper regulation.

Manganese deficiency, manganese transport, genes that affect manganese levels

Manganese: Genetic Interactions, Diet, and Supplements

Manganese is an essential mineral used by several enzymes, but excess exposure can be neurotoxic. Find out about your genes involved inved in manganese transport and absorption.

Molybdenum: Genetics, Sulfur metabolism, and Deficiency

Molybdenum: Genetic Connections, Sulfur Metabolism, and Cofactor Deficiency

Molybdenum is a trace mineral cofactor needed in the right amounts for sulfur detoxification and the formation of uric acid. Learn about the genetic variants, such as SUOX and AOX1, that affect the molybdenum pathways.

Selenium and Your Genes

Selenium and Your Genes

Selenium is a trace element found in certain foods. It supports antioxidant and thyroid-related selenoproteins, but excessive intake can be harmful. Learn how selenium is used in the body and how genetic variants can make someone more susceptible to problems with a selenium-deficient diet.


Food Reactions

Food reactions can be due to genetic variants that decrease specific enzymes needed to break down a food, such as lactase. Allergies are generally an interaction between genetic susceptibility and environmental factors.

Histamine intolerance symptoms, genetic components, histamine

Histamine Intolerance Genetics: DAO & HNMT Genes, Supplements

DAO/AOC1 and HNMT genes affect histamine breakdown. Find out how your genes may add to problems with foods high in histamine.

Tyramine Intolerance: Metabolism of Tyramine, MAOA, FMO3, and CYP2D6 enzymes, foods high in tyramine

Tyramine Intolerance: Symptoms, High-Tyramine Foods, and Genetics

Genetic variants in MAOA, FMO3, and CYP2D6 influence your body’s ability to break down tyramine. Too much tyramine can lead to a hypertensive crisis, especially in the context of MAO-inhibiting substances.

Alcohol and Histamine intolerance, DAO enzyme, symptoms of histamine intolerance

Alcohol & Histamine Intolerance: Understanding the Connection

Alcohol can affect histamine intolerance symptoms by decreasing breakdown or by increasing the release of histamine. Learn about the pathways that are involved and how to avoid alcohol-induced histamine reactions.

How your genes influence oxalate levels - graphical abstract

Oxalates: What Your Genes and Diet Say About Oxalate Health Issues

Oxalates interact with your diet, gut microbiome, kidney function, and, in some cases, genetic pathways. Find out about the primary hyperoxaluria genes, kidney-stone risk genes, and the research-backed dietary considerations.

LCT Gene and lactose intolerance, lactose intolerance by population group, find in 23andMe, AncestryDNA data

Lactose Intolerance: How to Check Your Genetic Data

Variants in the LCT gene that encodes the lactase enzyme predict lactase persistence in adulthood. Find out what your genes show for lactose intolerance and learn about distinguishing it from other dairy-related conditions.

Casein and Cow’s Milk Allergies

Casein and Cow’s Milk Allergies

Cow’s milk allergy is an immune reaction to casein or β-lactoglobulin. Genetic variants in your immune-system genes increase susceptibility when combined with environmental factors.

Mushroom Intolerance: IBD, Ergothioneine and the OCTN1 Gene

Mushroom Intolerance: Ergothioneine and the OCTN1 Gene

Mushrooms contain a healthy antioxidant called ergothioneine. SLC22A4/OCTN1 variants can alter ergothioneine transport and cause problems with mushrooms in people with inflammatory bowel diseases.

Nickel allergy genetics, foods to avoid with nickel allergies

Nickel Allergy: Genetics, causes, natural solutions

Nickel allergy can involve contact exposure and, for some people, systemic nickel reactions. Explore how genes, everyday exposures, and diet contribute to nickel sensitivity, including rashes, GI symptoms, and brain fog.

Fructose Intolerance: ALDOB Gene, symptoms of fructose intolerance, Foods High in Fructose

Fructose Intolerance: Hereditary or Dietary?

Fructose intolerance can be due to common malabsorption issues or rare mutations in the ALDOB gene, which cause hereditary fructose intolerance. Find out the differences in symptoms and testing, as well as when a clinical evaluation is needed.

Butyrylcholinesterase (BChE) gene variants

BChE gene: Nightshade sensitivity, Anesthesia risk

BCHE variants can lower butyrylcholinesterase activity, which has serious implications for certain types of anesthesia. Find out how BChE may also interact with nightshade vegetables, pesticide susceptibility, immunity, and ghrelin (hunger hormone).

Diagram showing that TRPV1 interacts with spicy foods, neuroinflammation, and peripheral nerve pain

TRPV1 Gene: Receptor for Spicy Foods, Sensing Cold, and CBD Oil

TRPV1 encodes the receptor for spicy foods (capsaicin), heat, pain, neuroinflammation, and CBD oil. Learn how your genetic variants affect spicy-food tolerance as well as the broader picture with TRPV1.

Caffeine sensitivity genetics, CYP1A2, ADORA2A

Caffeine Sensitivity and Your Genes

Genetic variants in the CYP1A2 and ADORA2A genes determine how quickly your body processes and eliminates caffeine. Learn why certain genotype combinations influence whether caffeine is likely to make you jittery or anxious.


Personalized Nutrition

These articles bring together practical ways to implement personalization for your diet.

FASD1 and FASD2 genes, converting Omega 3&6 in DHA and EPA

FADS1 and FADS2: Omega-3 and Omega-6 Fatty Acids

The FADS1 and FADS2 genes influence conversion of omega-3 fatty acids into longer-chain products, including DHA and EPA. Variants in these genes affect how well you convert the plant-based omega-3 oils.

Digesting Carbohydrates: Amylase (AMY1 Gene)

Digesting Carbohydrates: Amylase variants

Amylase is the enzyme that breaks down carbohydrates, starting with the first stage of digestion with saliva in your mouth. Variants in the AMY genes can affect how well you digest carbohydrates.

Carbohydrate metabolism: Genetics, Insulin, and Carbs

Carbohydrate metabolism: Genetics, Insulin, and Carbs

Genetic variations play a role in how people react to carbohydrates in the diet. Learn about a few genes that affect insulin or glucose levels based on carbohydrate consumption. Use your genetic raw data and discover how your body handles carbohydrates.

Hunter-Gatherer or the Farmer Genetic Variant, Glucose transport

Do you carry the Hunter-Gatherer or the Farmer Genetic Variant

A huge shift took place when our hunter-gatherer ancient ancestors began farming, growing grains, and storing them so that there would be food available all year. Learn if you carry the hunter-gatherer or farmer gene variant and what the evidence says (and doesn’t say) about this variant. 

Glucose Response: Caffeine + Sugar + Genes

Glucose Response: Caffeine + Sugar + Genes

Consuming caffeine along with carbohydrates changes the post-meal glucose response for people with certain genetic variants. Find out more about how your genes influence your response.

SCD1: Saturated Fatty Acid Conversion

SCD1: A lynchpin of metabolism

The SCD1 enzyme converts saturated fatty acids to monounsaturated fatty acids. Learn how your genes impact this enzyme, and how this relates to weight loss.

Is Intermittent Fasting Right for You, genes related to Autophagy

Is intermittent fasting right for you?

Intermittent fasting and ketosis response vary with circadian biology, health status, and genetics. Find out how your genes play a role in how you feel and how your body produces energy when fasting.

5 Ways to Optimize Your Diet, Based on Your Genes

5 ways to optimize your diet, based on your genes

Use your genetic data to find out about 5 practical diet questions, including how you convert vitamin A, whether lactose intolerance could be a problem, and how saturated fats can affect your heart risk.

Saturated Fats, ACE Gene, APOE gene and saturated fats

Saturated Fat and Your Genes (ACE gene)

Genes such as ACE and APOE can affect how your body (and heart) respond to saturated fats in your diet. Learn more about the good/bad fat debate and find out how your genes play a part in understanding the nuances.

Coffee: Benefits Based on Your Genes

Coffee: Benefits based on your genes

Genes involved in caffeine metabolism (CYP1A2) and signaling (ADORA2A) can affect how coffee influences your sleep, blood pressure, and risk of anxiety from caffeine.