Ankylosing spondylitis is a highly heritable inflammatory arthritis of the spine, driven largely by HLA-B27 with contributions from ERAP1 and IL23R. This guide explains the key genetic factors, how to recognize the condition, and the evidence-based habits — exercise, not smoking, and provider-guided care — that support quality of life.

Cluster headaches bring severe one-sided pain in clockwork bouts driven by the hypothalamus and circadian clock. Alcohol is a key trigger, and genes like HCRTR2 (orexin receptor 2) shape susceptibility. Learn how attacks start and where pathway-level genetic context fits.

Magnesium powers over 300 reactions, and genes like TRPM6, CNNM2, and SLC41A1 build the transporters that determine how efficiently your body absorbs and retains it. This article explains the genetics, what research shows, and how pathway-level insight supports smarter nutrition choices.

Alopecia areata is an autoimmune hair loss condition with strong genetic roots in the HLA region. Learn how HLA-DQA2, HLA-DQB1, and HLA-DRB1 variants raise risk, why immune genes like CTLA4 and PTPN22 also contribute, and what inherited risk does — and does not — tell you about the condition.

Bradycardia — a resting heart rate under 60 beats per minute — can be harmless in athletes or a sign of a conduction problem. Learn the symptoms, common causes, when it becomes an emergency, and how inherited variants in HCN4 and SCN5A shape the heart’s rhythm.

Chronic constipation has a genetic side: genes like SLC6A4 shape serotonin signaling and the gut motility that moves stool along. This article explains which pathways matter, what the research shows, and how the Precision Peptide Genetic Test provides genetic context you can bring to your provider.

The NPAS2 gene helps run your circadian clock, linking sleep timing to mood stability. Variants such as rs2305160 are associated with chronotype, seasonal mood patterns, and sensitivity to circadian disruption. Learn how NPAS2 works and how pathway-level genetic insight can inform a provider-guided approach to sleep and mood.

JAK2 gene variants such as rs10758669 influence the JAK-STAT signaling pathway tied to gut inflammation in IBD. This article explains what JAK2 does, how it connects to Crohn's and colitis alongside IL23R, NOD2, and TYK2, and what pathway-level genetic insight can and cannot tell you.

The ADA gene variant rs73598374 lowers adenosine deaminase activity, letting adenosine linger and increasing deep, slow-wave sleep that supports daytime attention. This article explains how ADA links sleep, focus, and immune biology, the ADORA2A caffeine connection, and what genetic insight adds.

Your melatonin rhythm and sleep timing are shaped by genes including AANAT, ASMT, MTNR1B (rs10830963), CYP1A2, and clock genes such as PER3, CLOCK, and BMAL1. This article explains how those variants influence melatonin production, signaling, and chronotype, and how pathway-level genetic insight provides context for better sleep habits.

The 5-HTTLPR variant in the SLC6A4 serotonin-transporter gene has been studied in depression, anxiety, PTSD, and stress sensitivity. This article explains the short and long alleles, the gene-environment nuance, related variants like COMT and BDNF, and what pathway-level genetic insight can and cannot tell you.

Chlamydia susceptibility is shaped partly by immune-system genes such as TLR4 and IL10, which influence how the body responds to Chlamydia trachomatis. Learn what research shows about genetic factors, the protection methods that matter most, and how pathway-level insight from PlexusDx fits in.

Cough sensitivity is partly inherited. Variants in TRPV1 (rs8065080) shape the airway receptors that set your cough threshold, while MUC5B (rs35705950) influences airway mucus. Learn what these named gene variants do and why pathway-level genetics supports, but never replaces, medical evaluation of a persistent cough.

The GAD1 gene builds GABA, the brain's main calming neurotransmitter, and its variant rs3749034 has been studied in bipolar disorder, depression, and anxiety. Learn what this SNP does, why one variant never tells the whole story, and how pathway-level genetic insight supports professional care.

The APOC3 gene controls how fast your body clears triglycerides. Loss-of-function variants are linked to roughly 40% lower triglycerides, reduced heart-disease risk, and longevity in long-lived families. Learn how APOC3 works and what the Precision Peptide Genetic Test reveals about your pathways.

Aluminum is everywhere — in cookware, food additives, antacids, and water — but the body absorbs very little and healthy kidneys clear the rest. Genes such as TF and SOD2 shape how you transport metals and manage oxidative stress. Learn the real risks, the Alzheimer's question, and simple ways to reduce exposure.

The PPARD gene governs fat burning and mitochondrial energy use, processes central to aging. Regulatory variants like rs2016520 (+294T>C) appear in longevity and metabolic research alongside FOXO3 and PPARGC1A. Learn what the science shows and how the Precision Peptide Genetic Test maps energy-metabolism pathways.

The NLRP3 gene builds the inflammasome, an immune alarm that releases IL-1β. Gain-of-function variants like Q705K (rs35829419) are associated in research with a lower activation threshold and altered risk for IBD and other inflammatory conditions. Learn what NLRP3 does and how genetic insight adds pathway-level context.

Myocarditis is inflammation of the heart muscle, often triggered by viral infection, with symptoms from chest pain to palpitations. This article explains the signs, causes, and the DSP, TTN, and LMNA gene variants researchers link to susceptibility, plus what pathway-level genetic insight can and cannot tell you.

Parathyroid hormone controls blood calcium, and low PTH (hypoparathyroidism) can cause tingling, cramps, and fatigue. This article explains the symptoms, the genes involved — including CASR, GNA11, and GCM2 — and why evaluation and any treatment belong with a qualified provider.

Shoulder impingement risk is influenced by connective-tissue genes including COL5A1 (rs12722), MMP3, and TNC, which shape tendon quality and repair. Learn how these variants interact with load and posture, why genetics is context not diagnosis, and how the Precision Peptide Genetic Test frames your recovery pathways.

HbA1c reflects your average blood sugar over three months: below 5.7% is normal, 5.7 to 6.4% is prediabetes, and 6.5%+ signals diabetes. Named variants like TCF7L2, FTO, and G6PD influence both risk and the test itself. Learn the thresholds, the biology, and how genetic insight adds context.