The PEMT gene controls how your body makes choline, and common variants like rs7946 can raise your dietary choline needs. This article explains PEMT function, health risks of low choline, related methylation genes MTHFD1 and MTHFR, and how genetic insight informs your nutrition.

Cystatin C is a sensitive, muscle-independent marker of kidney filtration, and the CST3 gene helps set your baseline. This article explains what cystatin C measures, how it compares to creatinine, the genes behind kidney biology, and how pathway-level genetic insight adds proactive context.

SOD3 encodes the antioxidant enzyme that defends tissue outside your cells, and its R213G variant (rs1799895) changes how it binds vessel and lung tissue. This article explains SOD3's role in oxidative stress, the longevity gene network including SOD2 and FOXO3, and what genetic insight adds.

Sinus congestion has a substantial genetic component — variants in HNMT, AOC1, and IL13 shape histamine clearance and nasal inflammation. This article explains the genetic factors behind chronic congestion, what pathway-level insight can and cannot tell you, and how to bring that context to a qualified provider.

Blood phosphate is tightly regulated by genes like FGF23, SLC34A1, PHEX, and KL, and inherited factors explain much of the variation between healthy people. This guide explains what phosphate does, why levels run high or low, and how pathway-level genetic context supports better conversations with your provider.

Biological age estimates how old your body actually is, and it can run lower than your chronological age. Genes like FOXO3 (rs2802292) shape longevity pathways, while lifestyle drives most of the outcome. This article explains the factors behind biological aging and how pathway-level genetic insight adds context.

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.

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.

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.

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.

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.

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.

The DIO1 gene variant rs2235544 influences deiodinase type 1, the enzyme that converts T4 into active T3, subtly shifting the free T3, free T4, and reverse T3 balance. Learn how thyroid hormone conversion works, why the variant is not a disorder, and how the Precision Peptide Genetic Test frames your hormone pathways.

High PTH can signal vitamin D deficiency, primary hyperparathyroidism, or inherited conditions tied to genes like CASR, MEN1, and CDC73. This article explains what PTH does, why levels rise, the genetics of calcium regulation, and how pathway-level insight informs provider conversations.

Genetics account for roughly 40–60% of coronary artery disease risk through genes such as APOB, PCSK9, LDLR, and LPA that govern cholesterol, inflammation, and blood-vessel biology. This guide explains the key cardiovascular genes and why modifiable lifestyle factors still dominate prevention.

Homocysteine links heart disease and cognitive decline, and genetics explains more than half of its variation between people. This article covers MTHFR C677T (rs1801133), APOE, and the methylation pathway genes MTR, MTRR, and CBS, plus what the PlexusDx Precision Peptide Genetic Test reveals about your cardiovascular and methylation pathways.

Presbyopia affects nearly everyone after age 40 as the eye's lens stiffens and loses focusing flexibility. This article explains the biology, the lens genes involved (including CRYAA and the crystallins), what heritability research shows, and how to manage aging eyes with a qualified eye-care provider.

Organophosphate sensitivity describes how strongly a person reacts to pesticide chemicals that disrupt nerve signaling, and it varies widely by exposure and biology. Learn the health effects, who is more vulnerable, practical risk-reduction steps, and how detoxification variants like PON1 rs662 and BCHE add pathway-level context.

Retinitis pigmentosa (RP) is an inherited retinal condition tied to more than 70 genes, including RHO, USH2A, and RPGR. This article explains how RP progresses, why the specific gene matters for family risk and care, and how clinical genetic testing differs from pathway-level wellness insight.

Genetics shapes how efficiently your body methylates and clears arsenic. The AS3MT gene is the master switch, with glutathione-transferase genes like GSTO1 and the broader methylation network also involved. Learn how genes and environmental exposure together influence arsenic-related health risk.

Alcoholic liver disease risk varies with genetics: PNPLA3, TM6SF2, and MBOAT7 shape liver vulnerability, while ADH1B and ALDH2 affect alcohol metabolism. This article explains how alcohol damages the liver, which variants raise risk, and how pathway-level genetic insight informs prevention conversations.

What maintains your heart rate? The sinoatrial node sets the beat, the autonomic nervous system tunes it, and genes including HCN4, SCN5A, and GJA5 shape pacemaker and conduction function. Learn the genetics of the heartbeat, the lifestyle levers that support it, and how the Precision Peptide Genetic Test maps your predispositions.