GGT (gamma-glutamyltransferase) is both a liver biomarker and a heritable trait, with variants in the GGT1 and GCKR genes shaping your baseline level and its links to metabolic and type 2 diabetes risk. Learn what GGT measures, why genetics matters, and how pathway insight adds context.

FOXO3 is one of the most replicated human longevity genes, and variants like the "G" allele at rs12212067 and "C" allele at rs2253310 recur in people who reach their 90s and 100s. Learn what FOXO3 does, what these variants mean, and how genetic insight adds context — not a lifespan prediction.

Genital herpes outcomes vary widely, and host immune genes help explain why. HLA alleles and TLR3 shape how the body controls HSV, while research near C21orf91 links genetics to outbreak frequency. This article covers the named genes, evidence-based prevention, and where pathway-level genetic insight fits in.

Benign prostatic hyperplasia (BPH) affects many older men, causing urinary symptoms driven by DHT and the prostate’s androgen pathway. Genetics accounts for about 40% of BPH risk, with genes like SRD5A2 and AR involved. This guide covers the hormonal biology, risk factors, and provider-led evaluation.

Women aged 19–50 generally need about 1,000 mg of calcium daily, rising to 1,200 mg after 51. But genes like VDR (rs2228570) and COL1A1 shape how efficiently you absorb and use it. This article explains calcium targets, the genetics of bone density, and how pathway-level insight adds context.

Age-related macular degeneration (AMD) has one of the strongest genetic components of any eye disease, driven largely by CFH and ARMS2/HTRA1 variants that affect retinal inflammation. This article explains the genetic and lifestyle factors behind AMD and how genetic insight supports an informed provider conversation.

Genetics shape roughly 40% of the variation in short-term memory, working alongside sleep, stress, and cardiovascular health. This article explains how variants in BDNF, COMT, and APOE influence recall, which lifestyle levers matter most, and what pathway-level genetic insight can and cannot tell you.

Luteinizing hormone (LH) triggers ovulation, sustains the menstrual cycle, and drives testosterone production. This article explains the brain-pituitary-gonad axis and how genes like LHB, LHCGR, and GNRHR shape LH signaling, plus what pathway-level genetic insight can and cannot tell you about fertility.

Lycopene, the antioxidant pigment in tomatoes and watermelon, supports cardiovascular, skin, and cellular health. How much reaches your blood depends on cooking, dietary fat, and genes like SCARB1, CD36, and SOD2. This guide covers lycopene's benefits, the best food sources, and the genetics of absorption.

The Klotho gene (KL) produces a protein tied to aging, cognition, and cardiovascular biology. Its KL-VS variant (marked by rs9536314) is linked in research to modest benefits — often strongest in single-copy carriers. Learn what KL-VS means and how genetics inform healthy-aging context.

Genetic factors in HPV susceptibility center on the HLA immune genes — HLA-DRB1 and HLA-DQB1 — plus TMC6/TMC8, which influence how efficiently the immune system clears the virus. This article explains those associations and the proven protection methods (vaccination, screening) that matter far more than any single variant.

The FKBP5 gene acts as a dimmer switch on the body's cortisol stress system, and its variants shape susceptibility to anxiety, depression, PTSD, and chronic pain. This article explains how FKBP5 works, the rs1360780 variant, its gene-by-environment effects, and what pathway-level genetic insight can reveal.

FOXO1 is a master transcription factor that controls glucose production, insulin signaling, and beta-cell health. Variants influencing FOXO1, TCF7L2, and FTO shape type 2 diabetes risk and insulin sensitivity. Learn how pathway-level genetic insight fits alongside lifestyle and provider care.

The genetic trait behind histamine intolerance is reduced activity in the DAO enzyme (AOC1 gene) and HNMT enzyme that break down histamine. Variants like AOC1 rs10156191 and HNMT rs1050891 slow clearance, producing migraines and allergy-like symptoms. This article explains the genetics and what genetic insight adds.

ESR1 encodes estrogen receptor alpha, and its common variants rs2234693 (PvuII) and rs9340799 (XbaI) are associated in research with bone mineral density, cardiovascular tendencies, and reproductive timing. Learn what these estrogen-receptor variants mean, why associations are not diagnoses, and where pathway-level genetic insight fits.

Low blood pressure (hypotension), a reading below 90/60 mmHg, is shaped by genes that regulate your nervous, kidney, and hormonal systems. This guide explains the causes, symptoms, and named genetic factors — ADRB2, AGT, NOS3, AHR, and LRRTM1 — plus evidence-based lifestyle approaches.

Chronic irritability is partly biological. Named variants in COMT (Val158Met), MAOA, and SLC6A4 shape the dopamine and serotonin systems behind mood, impulse control, and emotional regulation. Learn the genetic factors in irritability, evidence-based ways to support regulation, and where pathway-level insight fits.

HDL, the "good" cholesterol, clears excess cholesterol from arteries, and about half of your baseline is genetic. Variants in CETP (like rs708272), LPL, and APOA1 shape HDL levels. Learn evidence-based ways to improve HDL and how pathway-level genetic insight adds context.

Leucine is the branched-chain amino acid that triggers muscle protein synthesis through the mTOR pathway and also influences blood sugar control. This post explains leucine's functions, the leucine threshold for muscle growth, and how genes like PPM1K and BCAT2 shape the way your body handles branched-chain amino acids.

Diabetic foot ulcers affect about 15% of people with diabetes, and genetics helps explain who is most at risk. A variant in the MAPK14 gene — the T allele at rs80028505 — was tied to a 71% higher likelihood of ulcer development. Learn the risk factors, prevention habits, and what genetic insight offers.

The rs1805087 (Asp919Gly) variant in the MTR gene affects methionine synthase, the enzyme that recycles homocysteine using vitamin B12 and folate. Research links it to homocysteine levels and methylation biology. Learn what the science shows and how the Precision Peptide Genetic Test maps your one-carbon pathways.

Elevated albumin usually reflects dehydration, but ALB gene variants can genuinely change how this key blood protein behaves. This article explains what albumin does, how conditions like familial dysalbuminemic hyperthyroxinemia distort lab values, and what pathway-level genetic insight can and cannot tell you.

Genetics contributes to up to half of male-factor fertility cases. Learn how Y-chromosome AZF microdeletions, CFTR variants linked to CBAVD, and MTHFR-related folate metabolism can affect sperm count and quality — plus the lifestyle factors and specialist evaluation that guide next steps toward improving fertility.

Addison's disease, or primary adrenal insufficiency, is most often autoimmune and shaped by immune genes including HLA, CTLA4, PTPN22, and rare AIRE mutations. This article explains the genetic factors, the role of provider-directed care, and why genetic insight offers pathway context rather than a diagnosis.

Diarrhea has both environmental and genetic drivers. Infections and foods trigger many episodes, while genes such as LCT, SI, and NOD2 shape how the gut digests sugars and regulates its lining. Learn the causes, the genetics of food tolerance, and when to seek care.