The PPM1K gene encodes a mitochondrial enzyme (PP2Cm) that controls how quickly your body clears branched-chain amino acids (BCAAs). Learn how the rs1440581 variant influences BCAA levels, insulin sensitivity, and diet response — including findings from the POUNDS LOST trial — and what a PPM1K result really means for your nutrition.

Oleic acid is the main monounsaturated fat in diet and body, and its health meaning depends on source. Genetic variants in SCD (rs2234970), FADS1, and FADS2 shape how much your body makes and how it handles fat. This article explains the named genes and where pathway-level insight fits alongside provider care.

Milk allergy is an immune reaction to cow's milk proteins with an inherited component — genetics accounts for roughly 15% of risk. This article explains the genes involved (FLG, IL4, IL13, HLA), how milk allergy differs from lactose intolerance, and how to manage it with a qualified allergist.

TCF7L2 is the gene most strongly tied to carbohydrate metabolism, and its rs7903146 variant shapes how sharply your blood sugar rises after carbs. This guide explains simple versus complex carbs, the role of AMY1 in starch digestion, and how to match your plate to your genetics.

The MTHFD1 rs2236225 variant reduces folate-processing enzyme activity, pushing the body to rely more on dietary choline. This guide explains how MTHFD1 and PEMT shape choline demand, why choline matters for methylation and brain health, and food-first strategies to meet higher individual needs.

The GPX1 gene encodes an antioxidant enzyme, and its Pro198Leu variant (rs1050450) is associated with lower activity and altered oxidative-stress markers. This article explains how GPX1 variants relate to lifespan and health, the wider antioxidant network, and what pathway-level insight reveals.

HNF4A gene variants are statistically linked to ulcerative colitis, one form of inflammatory bowel disease, through the gene's role in the gut barrier. This article explains what HNF4A does, how variants like rs1800961 connect to IBD risk alongside NOD2 and IL23R, and what genetic insight can and cannot tell you.

The SLC2A2 gene variant rs5400 (Thr110Ile) alters GLUT2 glucose sensing and is associated with higher sugar intake in research studies, with downstream links to blood sugar, liver load, and weight. This article explains the biology, the limits of the evidence, and what pathway-level genetic context can add.

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.

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.