Excessive thirst, or polydipsia, can trace to genetics through the vasopressin water-balance pathway — variants in AVP, AVPR2, AQP2, and WFS1 — or through diabetes-risk genes like TCF7L2 and FTO. This article explains those pathways, other causes to rule out, and when to seek care.

Lichen planus is a T-cell-mediated inflammatory condition tied to immune genes in the HLA region, including HLA-DRB1 and HLA-DQB1. This article explains the immune mechanism, named genetic associations, the hepatitis C link, and where pathway-level genetic insight fits into provider-led care.

Scoliosis affects 2 to 3 percent of people, and genetics plays a real role — with LBX1 the most replicated gene linked to adolescent idiopathic scoliosis. This article explains the polygenic factors behind spinal curvature, connective-tissue and bone-density genes like COL1A1 and VDR, and what genetic insight adds.

DHEAS is the body's most abundant steroid hormone and a precursor to testosterone and estrogen. Genes including SULT2A1 and CYP17A1 shape how much you make and store. Learn how genetic factors influence DHEAS, reproductive health, and what pathway-level insight from PlexusDx can reveal.

Gut inflammation is shaped by gene variants including NOD2, IL23R, ATG16L1, TNF, and IL10, which govern how your immune system senses bacteria and how your intestinal barrier holds together. This article explains what those genes do, what research shows, and how pathway-level genetic insight provides context for a provider conversation.

Genes like MAOA and COMT Val158Met shape how quickly your brain builds, uses, and clears the dopamine and serotonin behind emotional reactivity. This article explains what the "warrior gene" research really shows, why anger is polygenic, and how pathway-level genetic insight puts your temperament in context.

Genetic factors shape why shoulder and neck pain feels so different from person to person. Variants in COMT, SCN9A, and inflammatory pathways influence pain sensitivity and chronic risk. Learn what the research shows and how pathway-level genetic insight can inform a personalized, provider-guided pain-management conversation.

Shrimp allergy is driven by IgE antibodies against tropomyosin, a shellfish muscle protein, and shaped by named genes including IL13, IL4, and FLG. This article explains the immune pathway behind shellfish reactions, the role of the skin barrier, cross-reactivity, and how genetic pathway insight fits alongside allergist-led care.

Your eGFR gauges kidney filtration, and genetics helps shape it. Variants near UMOD (rs12917707), plus SHROOM3, GATM, and APOL1, are linked to kidney function in research. Learn what the science shows about inherited kidney tendencies and how the Precision Peptide Genetic Test maps related pathways.

Manganese is an essential trace mineral, and genetic variants in transporters such as SLC39A8 (rs13107325), SLC30A10, and SLC39A14 shape how your body absorbs and clears it. This article explains the key named genes, the link to oxidative balance, and where pathway-level genetic insight fits alongside provider care.

Contact dermatitis susceptibility is shaped by genes like FLG, which builds the skin barrier, and GSTM1 and GSTT1, which process chemicals. This article explains the genetics behind skin rash, what the research shows, and what the Precision Peptide Genetic Test reveals about your skin-barrier and detox pathways.

Extraversion and introversion are roughly 40 to 60 percent heritable, shaped by dopamine and serotonin genes including DRD4, DRD2, COMT (rs4680), and SLC6A4. This article explains how these variants influence reward sensitivity and social temperament — and why genetics sets tendencies, not a fixed personality.

FSH levels are partly genetic: the FSHB promoter variant rs10835638 sets how much FSH you make, while the FSHR variant Ser680Asn changes how sensitively your body responds. These named variants shape fertility and menstrual biology. Learn how they work and how pathway-level genetic insight adds context.

Genetics explains roughly 40 to 50 percent of depression risk through variants in COMT (rs4680), BDNF Val66Met, and MTHFR C677T. This article explains how these genes shape neurotransmitter and methylation pathways, why environment still decides the outcome, and how pathway-level genetic insight informs a provider conversation.

The rs1050450 (Pro198Leu) variant in the GPX1 antioxidant gene depends on selenium — the mineral that partners with iodine in thyroid hormone production. This article explains what the "G" allele changes, how antioxidant genetics connect to iodine metabolism, and what a pathway-level genetic test can and cannot reveal about your biology.

Genetic variation in detox enzymes helps explain why people react differently to pesticides. PON1 variants rs662 and rs854560, plus CYP450, GSTM1, and GSTT1 genes, shape how efficiently you clear organophosphates. Learn how genetics modifies pesticide sensitivity and why reducing exposure protects everyone.

Sleep movement is meaningfully genetic: variants in MEIS1, BTBD9, and TOX3 raise the odds of periodic limb movements and restless legs, while CLOCK and MTNR1B shape sleep timing and quality. Learn how these named gene variants work and how pathway-level genetic insight fits into better rest.

Ghrelin, the hunger hormone, drives appetite, fat storage, and energy balance — and genes like GHRL, GHSR, and FTO shape how much you make and how strongly you respond. This article explains the genetic factors behind ghrelin, what the research shows, and how pathway-level insight adds context.

Phenylalanine metabolism depends on the PAH gene and the BH4 cofactor pathway (GCH1, PTS, QDPR). Learn how these variants shape how you convert this essential amino acid, how predisposition is assessed, and what the Precision Peptide Genetic Test reveals about your metabolic pathways.

Pyroglutamic acid (5-oxoproline) is a checkpoint in the gamma-glutamyl cycle that builds glutathione, your cells' master antioxidant. The OPLAH and GSS genes regulate this loop. Learn how pyroglutamic acid reflects oxidative-stress balance and what pathway-level genetics can reveal.