Genetic research library
The science behind
your genome.
Evidence-based guides on how specific gene variants affect which supplements work — and which don't. Backed by GWAS research and peer-reviewed data.
ALDH2 Gene: The Asian Flush Gene and What It Really Means for Your Health
If you flush red after one drink, it's not low tolerance — it's a genetic variant affecting 560 million people. ALDH2*2 raises esophageal cancer risk up to 89x with regular drinking.
Read article →MTHFR Gene Variants: Which Supplements Actually Work
40% of people carry an MTHFR variant that blocks standard folic acid. Learn which methylated B vitamins your genome a…
APOE4 Supplements: What to Take (and Avoid) for Brain Protection
Carrying APOE4? Learn which supplements support brain health, reduce Alzheimer's risk, and which ones may accelerate it.
CYP1A2: Why Caffeine Hits You Harder (or Doesn't)
Your caffeine metabolism speed is almost entirely genetic. Slow CYP1A2 metabolizers face 2x cardiovascular risk from …
COMT Gene: Your Dopamine Clearance Speed and What It Means
COMT controls how fast you clear dopamine and other catecholamines. Warrior vs. Worrier — and what to supplement acco…
CYP2R1: The Vitamin D Activation Gene That Explains Stubborn Deficiency
CYP2R1 converts vitamin D from food and sun into the form your body actually uses. Variants here are the most common …
VDR Gene: Why Some People Need 10x More Vitamin D
Vitamin D receptor variants change how efficiently your cells respond to Vitamin D — regardless of how much you take.
FOXO3: The Longevity Gene and How to Activate It
FOXO3 variants are found in centenarians worldwide. Here's what the research says about activating longevity pathways.
SLC6A4: The Serotonin Transporter Gene and Your Stress Resilience
The 5-HTTLPR variant determines how quickly your brain recycles serotonin — affecting anxiety, depression risk, and h…
BDNF Val66Met: The Brain Plasticity Gene
The Val66Met variant of BDNF affects how efficiently your brain builds new connections. Met carriers may need differe…
TNF-α: Your Inflammatory Baseline and How to Modulate It
TNF-α variants determine your baseline inflammatory state — affecting everything from autoimmune risk to how you resp…
CYP1B1: Estrogen Metabolism and Hormone Balance
CYP1B1 controls how your body metabolizes estrogen. Variants affect breast cancer risk, hormone-related conditions, a…
PEMT: Why Some Women Need More Choline
The PEMT gene produces choline in the liver. Variants common in women reduce this capacity — affecting liver health, …
HFE: Genetic Iron Overload and What to Do About It
HFE variants (C282Y, H63D) cause hereditary hemochromatosis — excess iron accumulation that damages organs. Many peop…
PPAR-γ: Fat Storage, Insulin Sensitivity, and the Pro12Ala Variant
PPAR-γ controls fat cell development and insulin sensitivity. The Pro12Ala variant is found in ~25% of Europeans and …
ACE I/D: Blood Pressure, Exercise Performance, and Cardiovascular Risk
The ACE insertion/deletion polymorphism affects blood pressure regulation and VO2 max potential. Elite endurance athl…
GSTP1: Glutathione Detoxification and Environmental Sensitivity
GSTP1 is a key enzyme in phase II detoxification. Variants reduce your ability to neutralize carcinogens, heavy metal…
MAOA: The "Warrior Gene" Explained (Without the Hype)
MAOA breaks down serotonin, dopamine, and norepinephrine. The low-activity variant isn't an aggression gene — it's a …
TPH2: The Gene That Controls How Much Serotonin Your Brain Can Make
TPH2 is the rate-limiting enzyme for brain serotonin synthesis. Variants in rs4570625 set your serotonin production c…
NR3C1: The Cortisol Receptor Gene and Your Stress Sensitivity
NR3C1 encodes the glucocorticoid receptor — the protein that 'reads' cortisol signals. Variants shift your HPA axis s…
IL-6 -174 G>C: The Inflammation Amplifier Gene
IL-6 is the master cytokine — coordinating immune response, regulating the brain, shaping metabolism. Your -174 G>C g…
SIRT1: The Longevity Switch Gene and Metabolic Master Regulator
SIRT1 is your body's built-in caloric restriction sensor. Variants in rs7895833 and rs12778366 determine how efficien…
ESR1 (PvuII & XbaI): Estrogen Receptor Sensitivity and Hormone Response
ESR1 variants determine how sensitive your cells are to estrogen signals — affecting bone density, breast cancer risk…
PPARA (PPARα): The Fat-Burning Gene and Your Metabolic Flexibility
PPARα is the nuclear receptor that switches your cells from glucose to fat-burning mode. The Leu162Val variant change…
ACTN3 R577X: The Sports Gene That Separates Power Athletes from Endurance Athletes
Alpha-actinin-3 is a structural protein found exclusively in fast-twitch muscle fibers. Whether you make it — determi…
CLOCK Gene T3111C: Circadian Rhythm, Sleep Timing, and Metabolic Health
The CLOCK gene rs1801260 variant shifts your internal clock later — affecting sleep onset, cortisol peaks, insulin se…
NRF2 (NFE2L2): The Master Antioxidant Switch and Your Environmental Resilience
NRF2 is the transcription factor that activates over 200 cytoprotective genes — including GSTP1, NQO1, and heme oxyge…
TP53 Arg72Pro: The DNA Damage Guardian and Apoptosis Switch
TP53 is the most studied gene in cancer biology — the master guardian of genomic integrity. The Arg72Pro variant shif…
PPARGC1A (PGC-1α): The Mitochondrial Master Switch Gene
PGC-1α is the molecular bridge between exercise, cold, fasting, and mitochondrial growth. The Gly482Ser variant (rs81…
SOD2 Val16Ala: The Mitochondrial Antioxidant Gene and Your Oxidative Stress Baseline
SOD2 encodes manganese superoxide dismutase — the primary antioxidant enzyme inside your mitochondria. The Val16Ala v…
BRCA1: What Your DNA Repair Gene Actually Means
BRCA1 is the most misunderstood gene in human genomics. Common functional variants affect how efficiently your cells …
SOD1: The Cytoplasmic Antioxidant Gene and Your Superoxide Defense
SOD1 encodes the copper/zinc superoxide dismutase that neutralizes ~80% of cellular superoxide in the cytoplasm and E…
FTO Gene (rs9939609): The "Fat Gene" Explained — What It Actually Does
FTO rs9939609 is the most-studied obesity SNP. The A allele raises obesity risk by 1.2–1.7× — not by storing more fat…
ESR2 (ERβ): Estrogen Receptor Beta and Your Hormone Balance
ESR2 encodes estrogen receptor beta — the counterbalancing partner to ERα. ERβ is anti-proliferative, anxiolytic, and…
DRD2 Taq1A: Dopamine Receptor Density and Your Reward Sensitivity
The DRD2/ANKK1 Taq1A variant controls how many D2 receptors your brain builds in the reward circuit. A1 carriers have…
CBS Gene: Homocysteine, Sulfur Metabolism, and the Methylation Bottleneck
CBS controls the transsulfuration pathway — the exit ramp from the methylation cycle. Variants can speed it up (sulfi…
GSTM1 & GSTT1 Null Genotype: Complete Gene Deletion Affecting Half the Population
Unlike SNPs that reduce enzyme activity, GSTM1/GSTT1 null genotypes delete the gene entirely — zero enzyme produced. …
CYP2D6: Why One Enzyme Determines Whether Your Antidepressant Works — or Poisons You
CYP2D6 metabolizes 25% of all prescribed drugs — antidepressants, opioids, beta-blockers, antipsychotics. Poor metabo…
CYP2C19: Clopidogrel, SSRIs, and the Gene That Makes Standard Doses Dangerous
CYP2C19 activates clopidogrel (Plavix) and clears SSRIs, PPIs, and antifungals. Poor metabolizers on clopidogrel have…
CYP3A4: The Most Important Drug Metabolism Gene You've Never Heard Of
CYP3A4 metabolizes ~50% of all prescribed drugs — statins, immunosuppressants, cancer drugs, benzodiazepines. Grapefr…
NOS3 (eNOS): The Nitric Oxide Gene That Controls Your Blood Vessel Function
NOS3 encodes endothelial nitric oxide synthase — the enzyme that relaxes blood vessels. The Glu298Asp variant (rs1799…
TCF7L2 Gene: The Strongest Type 2 Diabetes Risk SNP Known
TCF7L2 rs7903146 is the most replicated type 2 diabetes risk variant ever identified. The T allele impairs GLP-1-driv…
LCT Gene: The Genetics of Lactose Intolerance and Dairy Digestion
Lactase persistence — the ability to digest milk as an adult — is controlled by a single SNP near the LCT gene. 65% o…
PON1 Gene: Chemical Sensitivity, Pesticide Detox, and Organophosphate Risk
PON1 encodes paraoxonase-1, your primary defense against organophosphate pesticides and oxidized LDL. Variants rs662 …
PCSK9 Gene: LDL Clearance, Cardiovascular Risk, and the Variants That Protect You
PCSK9 controls how many LDL receptors your liver maintains. Loss-of-function variants reduce LDL by up to 40% and cut…
HLA-DQA1: Celiac Disease Genetics, Gluten Sensitivity, and the DQ2/DQ8 Story
Nearly all celiac disease requires HLA-DQ2 or HLA-DQ8 — the antigen-presenting haplotypes that display gluten peptide…
ANKK1 Taq1A: Dopamine Receptor Density and Your Reward Sensitivity
The ANKK1 rs1800497 Taq1A A1 allele reduces D2 dopamine receptor density by 30-40% in the striatum. A1 carriers have …
MTRR Gene: B12 Recycling, Methylation, and the MTHFR Companion Variant
MTRR rs1801394 encodes the enzyme that regenerates active B12 within the methylation cycle. When MTRR and MTHFR are b…
APOE Gene: Brain Cholesterol, Alzheimer's Risk, and Actionable Protocols for All Genotypes
APOE encodes the primary cholesterol transport protein in the brain. The e2, e3, and e4 alleles change amyloid cleara…
AGT Gene M235T: Salt-Sensitive Hypertension and Sodium-Blood Pressure Biology
The AGT rs699 M235T variant increases angiotensinogen production, making blood pressure significantly more responsive…
BCMO1/BCO1 Gene: Beta-Carotene to Vitamin A Conversion and Why Vegans Need to Know
BCMO1 variants rs7501331 and rs12934922 reduce beta-carotene to vitamin A conversion by 32-69%. Plant-based eaters wi…
MC4R Gene: The Satiety Receptor That Controls How Full You Feel
MC4R rs17782313 C allele impairs satiety signaling in the hypothalamus. Carriers eat more before feeling full — not f…
LEPR Gene: Leptin Receptor, Leptin Resistance, and Why Exercise Feels Harder
LEPR rs1137101 (Gln223Arg) impairs leptin receptor signaling — your brain can't adequately read your adipose tissue's…
ADIPOQ Gene: Adiponectin, Insulin Sensitivity, and Cardiovascular Protection
ADIPOQ rs2241766 and rs1501299 reduce adiponectin production — the anti-inflammatory hormone from fat tissue that imp…
IL-10 Gene rs1800896: Anti-Inflammatory Cytokine Genetics and Chronic Inflammation
IL-10 is the body's primary anti-inflammatory cytokine. The -1082 G/A variant reduces its production — and low produc…
CAT Gene rs1001179: Catalase, Hydrogen Peroxide Clearance, and Oxidative Stress
Catalase neutralizes hydrogen peroxide — the constant oxidative byproduct of normal metabolism. The CAT rs1001179 T a…
GPX1 Gene Pro198Leu: Glutathione Peroxidase, Selenium Dependency, and Thyroid Health
GPX1 rs1050450 (Pro198Leu) reduces glutathione peroxidase activity and heightens selenium dependence. TT carriers nee…
ABCA1 Gene: HDL Cholesterol Efflux and Why Some People Have Chronically Low HDL
ABCA1 rs2230806 reduces the efficiency of cholesterol efflux from cells into HDL particles. Carriers can have persist…
CETP Gene TaqIB: HDL/LDL Balance and Statin Interactions
CETP rs708272 affects the transfer of cholesterol esters between HDL and LDL. B2B2 carriers have naturally higher HDL…
MAOB Gene: MAO-B Enzyme and How Fast Your Brain Clears Dopamine
MAOB rs1799836 controls the speed of dopamine degradation in the brain. Low-activity variants mean dopamine lingers l…
SLC23A1 Gene: Vitamin C Transporter SVCT1 and Why Gut Absorption Varies
SLC23A1 rs33972313 affects SVCT1, the primary intestinal transporter for vitamin C. Reduced-function variants mean le…
HNF1A Gene: MODY3 Diabetes and Why Genetics Changes Everything About Treatment
HNF1A mutations cause MODY3 — a form of diabetes that looks like Type 2 but responds dramatically to sulfonylureas in…
ATP7B Gene: Copper Transport, Wilson Disease Spectrum, and Dietary Copper Accumulation
ATP7B rs1061472 and related variants affect the copper-exporting ATPase. Reduced function leads to copper accumulatio…
ABCB1/MDR1 Gene: P-Glycoprotein and Why Medication Doses Vary by Genetics
ABCB1 rs1045642 controls P-glycoprotein, an efflux pump that removes drugs and toxins from cells. Variants alter bioa…
VEGFA Gene: Blood Vessel Formation, Tissue Oxygenation, and Altitude Adaptation
VEGFA rs2010963 affects vascular endothelial growth factor production — the protein that stimulates new blood vessel …
CYP19A1 Gene: Aromatase Enzyme, Estrogen Production, and Hormone Balance
CYP19A1 encodes aromatase, the enzyme that converts androgens into estrogens. Variants affect estrogen levels in both…
PPARD Gene rs2016520: Endurance Capacity, Fat Oxidation, and Athletic Performance
PPARD rs2016520 controls PPAR-delta, the master regulator of fat burning and endurance in skeletal muscle. T allele c…
F2 Gene G20210A: Prothrombin Mutation, Blood Clots, and Oral Contraceptive Risk
The F2 G20210A variant increases prothrombin levels by 30%, raising the risk of deep vein thrombosis and pulmonary em…
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