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.

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.

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.

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.

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.

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.

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 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.

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.

Calcium oxalate is the most common kidney stone, and genes shape how much oxalate you make and absorb. AGXT drives rare primary hyperoxaluria, while common variants in SLC26A6 and CLDN14 affect everyday sensitivity. Learn the symptoms, genetics, and diet levers that matter.

The BHMT gene encodes an enzyme that recycles homocysteine into methionine using betaine, providing a folate-independent backup to the MTHFR pathway. This article explains what BHMT does, how the rs3733890 variant fits into the methionine cycle, and the nutrients and pathways that keep homocysteine in balance.

Dairy sensitivity is largely genetic: the MCM6 variant rs4988235 controls whether the LCT gene keeps producing lactase into adulthood, determining lactose intolerance risk. Learn how lactase persistence varies by ancestry, how lactose intolerance differs from milk allergy, and how to manage dairy with your provider.

Bifidobacterium longum is a keystone gut bacterium that ferments fiber into short-chain fatty acids, supports the gut barrier, and helps train immunity. Levels are shaped by diet and by genes like FUT2 (secretor status). Learn what boosts it and where genetic context fits.

The FOLH1 gene encodes folate hydrolase, the enzyme that lets your gut absorb dietary folate — the first step of folate metabolism. Learn how FOLH1 variants like rs61886492 affect folate status, how FOLH1 works in sequence with MTHFR, and how pathway-level genetic insight informs personalized nutrition.

Rectal prolapse is when the rectum slips through the anus, causing a bulge, mucus, bleeding, or incontinence. Causes include chronic straining, childbirth, aging, and connective-tissue genetics like COL3A1. Learn the symptoms, risk factors, and when to see a qualified provider.

Selenium is an essential trace mineral, and genes such as SELENOP (SEPP1) and GPX1 shape how efficiently your body transports and uses it. This article explains the key selenoprotein genes, the thyroid connection, why balance matters, and where pathway-level genetic insight fits into nutrition decisions.

Flatulence comes from bacteria fermenting undigested carbohydrates, and genes like LCT, MCM6 (rs4988235), and FUT2 shape which foods trigger it. This article explains the genetic and dietary causes of intestinal gas, the lactose connection, and evidence-based ways to identify triggers and control excess gas.

DHA is an omega-3 fat vital for brain and eye health, and your genes largely determine how much your body makes. This article explains DHA's role, the ALA-to-DHA conversion pathway, and how FADS1, FADS2 (rs174537), and ELOVL2 variants shape your DHA levels.

Adult milk tolerance is controlled by a regulatory variant (rs4988235) in the MCM6 gene that keeps the LCT lactase enzyme switched on. About two-thirds of adults worldwide are lactase non-persistent — a normal trait, not a disorder. Learn what your genetics reveal about dairy digestion.

Thirst and hydration are partly genetic: AVPR2, AQP2, and AGT variants shape how your body senses dehydration and how much water your kidneys conserve. This article breaks down the vasopressin, aquaporin, and sodium-balance pathways behind individual fluid needs and how genetic insight can guide smarter habits.

Alcohol sensitivity is driven mainly by two genes: ADH1B (rs1229984) speeds acetaldehyde production, and ALDH2 (rs671) slows its clearance, causing the alcohol flush reaction in 30-50% of East Asian people. This article explains the two-step metabolism, the key variants, and why sensitivity differs from tolerance.

GLP-1 is an incretin hormone that controls blood sugar by boosting insulin, suppressing glucagon, and reducing appetite — the pathway behind Semaglutide and Tirzepatide. This article explains the mechanism, the evidence, and the genes (GLP1R, GIPR, TCF7L2, FTO) that shape your baseline GLP-1 biology.

Lysine is an essential amino acid that supports protein, collagen, and carnitine-driven energy. Learn how high lysine affects health, how genes like AASS and SLC7A9 shape metabolism and absorption, and how to optimize intake with pathway-level genetic insight and provider guidance.

C. difficile infection develops when antibiotics disrupt the protective gut microbiome. Learn how host genes like IL8 (CXCL8) and TLR4 may influence infection severity and recurrence, why antibiotic stewardship drives prevention, and how pathway-level genetic insight adds educational context for conversations with your provider.

TAS2R38 is the primary gene behind bitter-taste perception, and its variants (rs713598, rs1726866, rs10246939) sort people into tasters, non-tasters, and supertasters. This article explains why the same broccoli tastes mild to one person and harsh to another, and how taste genetics shapes diet and food choices.