Genetics helps explain why muscle mass and body composition differ between people who train alike. Variants in ACTN3, MSTN, and FTO shape fiber type, the muscle-growth ceiling, and appetite — but diet, protein, and resistance training remain the strongest levers you control.

HLA-B27, a variant of the HLA-B gene, is the best-known genetic marker in spondyloarthritis — linked to ankylosing spondylitis, reactive arthritis, and acute anterior uveitis. Learn what carrying it means, how the ERAP1 gene interacts with it, and why most carriers never develop disease.

Dystonia is a movement disorder causing involuntary muscle contractions, with focal and generalized forms. Providers use botulinum toxin, medication, therapy, and deep brain stimulation. Named genes like TOR1A, THAP1, GNAL, and GCH1 shape inherited forms — learn how genetic context fits.

The ADRB2 rs1042714 variant (Gln27Glu) alters the beta-2 adrenergic receptor and has been studied for links to weight, metabolism, airway biology, and blood pressure. This article explains what the variant does, what research shows, and how pathway-level genetic insight fits your wellness picture.

GABRA6 and GABRG2 build parts of the GABA-A receptor, the brain's main inhibitory brake. GABRG2 variants are linked in research to inherited epilepsy syndromes, while GABRA6 is studied for sedative and alcohol sensitivity. Effect sizes are small, and variants are context, not diagnosis.

Blister risk reflects both friction and genetics. Skin-structure genes such as COL7A1, KRT5, and KRT14 build and anchor the epidermis, helping explain why some people blister far more easily. Learn how blisters form, what raises risk, and how genetic insight fits in.

The PPARA gene rs1800206 (Leu162Val) variant shapes how your body burns dietary fat and manages cholesterol. This article explains what the 'G' allele changes, the evidence-based fats, fiber, and exercise that support the PPAR-alpha pathway, and how pathway-level genetic insight informs a smarter diet conversation.

Some people develop gum disease despite good hygiene because genetics shapes how strongly the immune system reacts to plaque. This article explains the heritable side of periodontitis, the roles of IL1A, IL1B, IL6, and VDR, and how genetic insight can support proactive dental care.

HLA-DQ variants, encoded by HLA-DQA1 and HLA-DQB1, are among the strongest inherited risk factors for celiac disease and type 1 diabetes, with 90 to 95 percent of celiac patients carrying HLA-DQ2. This article explains the disease links and why a positive result rules conditions in but rarely diagnoses them.

PON1 variants rs662 (Q192R) and rs854560 (L55M) change how well paraoxonase-1, an HDL-bound antioxidant and detox enzyme, works. Learn what these named gene variants do, why researchers link them to cardiovascular and detoxification biology, and how pathway-level genetic context supports a conversation with your provider.

Chronic fatigue is multifactorial, and genetics offers context rather than a cure. Variants in MTHFR (methylation), mitochondrial genes (cellular energy), and COMT (stress chemistry) help explain why exhaustion is so individual. Learn what these genes reveal and how pathway-level insight supports a provider-led workup.

High basophil counts (basophilia) can signal allergic, thyroid, inflammatory, or bone-marrow processes such as myeloproliferative neoplasms. Genes including JAK2 and KIT shape the biology behind elevated basophils. Learn what a high reading means and how genetics adds pathway-level context to the conversation with your provider.

Copper is an essential trace mineral that powers energy production, connective tissue, and antioxidant defense, with adults needing about 900 micrograms a day. Genes such as SLC31A1, ATP7A, and ATP7B govern how your body absorbs, transports, and clears it. Learn the best food sources and what genetic insight can add.

Blood Urea Nitrogen (BUN) reflects kidney filtration, hydration, and protein intake. This guide explains the lifestyle levers — fluids, balanced protein, blood pressure and glucose control — that influence BUN, plus the genetics of kidney health, from the UMOD and APOL1 genes to MTHFR and homocysteine metabolism.

Low IL-10 — the body's main anti-inflammatory cytokine — is linked to inflammatory bowel disease, rheumatoid arthritis, and cardiovascular inflammation. The IL10 promoter variant rs1800896 helps set how much you produce. Learn what low IL-10 means and how pathway-level genetic insight clarifies your inflammatory biology.

Hereditary hemochromatosis causes the body to absorb too much iron, which builds up in organs over years. Early symptoms are subtle: fatigue and joint pain. The HFE gene variants C282Y and H63D drive most cases. Learn the symptoms, risk factors, and diagnosis.

Recurrent canker sores (aphthous stomatitis) cluster in families, driven by inflammatory cytokine genes IL1B, IL6, and TNFA plus the folate-metabolism gene MTHFR. This article explains the genetic and nutritional factors behind outbreaks, practical risk-reduction steps, and how genetic context informs prevention.

Chloride is the body's most abundant electrolyte anion, central to fluid balance and acid–base status, and genes like CFTR and SLC26A3 shape how you handle it. This article explains chloride's role, what shifts levels, the genetics involved, and where pathway insight fits.

High blood alanine can signal insulin resistance, type 2 diabetes risk, or mitochondrial conditions, reflecting the amino acid's central role in energy metabolism. Genes like GCKR (rs1260326) and GPT shape your levels. Learn what elevated alanine means and how pathway-level genetic insight from PlexusDx adds context.

Mononeuropathy is damage to a single nerve, causing localized numbness, tingling, or weakness—carpal tunnel is the classic example. Most cases stem from pressure or disease, but the PMP22 gene (HNPP) can make nerves fragile. Learn symptoms, management strategies, and how genetic insight adds context.

Childhood egg allergy has clear genetic roots: skin-barrier variants in FLG (filaggrin) and immune-signaling genes like HLA, IL4, IL13, and STAT6 raise risk, while environment shapes the outcome. This article explains those genetic factors and the real, provider-led role of testing in allergy care.