Histamine
This report reads your DNA and sorts every result into one of five plain-language groups, so you can see at a glance what deserves attention and what does not. Nothing here is a diagnosis. A flagged result means your genetics place you above or below the average person for that trait — a reason to ask a question, not a reason to worry.
Histamine — Histamine is a crucial molecule that plays multiple roles in your body, from immune responses to neurotransmitter function and digestion. This analysis explores genetic variations that influence every aspect of histamine metabolism -from production and storage to breakdown and
These are ordered by how closely they relate to your flagged results — not generic health advice. Marrow does not prescribe, dose, or tell you to take anything. Diet and lifestyle changes are listed first because they are yours to make. Anything you would swallow is listed separately, by name only, as something to raise with a clinician who knows your history and your medications.
Histamine v2 Eat dark chocolate with a cocoa content of at least 70-85%, limiting intake to about a day to gain cardiovascular and mood-related benefits without excessive calorie intake.
Exclude high-histamine foods such as aged cheeses, smoked meats, fermented products like sauerkraut and kombucha, alcohol, and preserved foods. for at least 4 weeks to observe any improvements in symptoms.
Keep indoor humidity levels below 50% by using dehumidifiers or air conditioners, ensure proper ventilation in areas like bathrooms and kitchens, fix leaks promptly, and clean up any water damage within 24-48 hours to prevent mold growth.
Check for lead-based paints in older homes and avoid cooking or storing food in uncoated metal containers.
Replace them with natural sugars found in fruits and whole grains.
Wear protective gloves and masks when using solvent-based products such as paint thinners, degreasers, or nail polish removers.
These came up in the research behind your flagged results. They are listed by name so you can ask about them. Marrow is not recommending them, and gives no dose. Supplements interact with prescription medication and with each other — that conversation belongs with your clinician.
Of the 12 results in this package, these 1 came back furthest from the population average. Each one below explains what it is, where you sit, and which report it came from. Start here.
Mastocytosis is often linked to mutations in the KIT gene, which plays a role in mast cell growth and development.
These mutations are usually acquired during a person's life rather than being inherited.
Other, less important risk factors include: Family history: Rare cases may run in families, but most are sporadic.
Named only. Marrow gives no dose and does not recommend these.
Not everything in a genetic report is a warning. These came back protective or better than average.
The most widely-investigated HRH2 polymorphism is rs2067474 (-1018 G>A).
Its minor ‘A’ allele may affect gene expression based on its position within the gene sequence but its exact contribution to HRH2 function hasn’t been established.
The remaining results, grouped by what they mean. Every one of these is explained in full — with the genes and variants behind it — in the technical version of this report.
Genetics is a predisposition, not a verdict. The single most useful thing you can do with this document is take it to a clinician and talk through the flagged findings — especially any that line up with symptoms you already have or conditions that run in your family. Nothing here changes: your DNA is the same at 60 as it is today, so this report does not expire.
Genotyping was performed on DNA extracted from a buccal (cheek) swab using a genome-wide array. Results are derived from peer-reviewed genome-wide association data and, where applicable, published clinical guidelines. Each report was scored independently against its own reference set. Percentile figures describe where your result sits relative to a reference population.
This is a laboratory-developed test. It has not been cleared or approved by the U.S. Food and Drug Administration. Genotyping does not detect all variants in the genes assessed; the absence of a flagged result does not exclude risk. Predisposition is probabilistic and is modified by environment, lifestyle, ancestry and family history. Results must be interpreted by a qualified healthcare professional and must not be used alone to diagnose, treat, or alter any medication regimen. Marrow does not recommend, prescribe, or dose any supplement or medication.
| Performing laboratory | Gene by Gene, Ltd. |
| Laboratory address | 1445 North Loop West, Suite 760, Houston, TX 77008 |
| CLIA certification | CLIA #45D1102202 |
| CAP accreditation | CAP #7212851 · accredited through 7 October 2027 |
| Laboratory Director | Feng Zhou, PhD, MB(ASCP) |
| Specimen type | Buccal (cheek) swab — genomic DNA |
| Accession | MRW-26-E25A8C |
| Date reported | 29 July 2026 |
This specimen was tested at Gene by Gene, Ltd., 1445 North Loop West, Suite 760, Houston, TX 77008, under CLIA #45D1102202 and CAP #7212851. Laboratory Director: Feng Zhou, PhD, MB(ASCP). Marrow Health is not a clinical laboratory and does not perform testing; Marrow prepares and delivers this report from data produced by the performing laboratory named above. Report generated 29 July 2026 · Accession MRW-26-E25A8C · © 2026 Marrow Health.