Hippuric (Males Under Age 13)
Hippuric acid is an organic compound formed in the liver when benzoic acid (a common substance found in foods, preservatives, and environmental chemicals) combines with glycine, an amino acid involved in detoxification. Measuring hippuric acid levels in urine provides insight into the body’s ability to process and eliminate toxins, especially those related to environmental exposure, gut microbial activity, and liver detoxification efficiency.
This marker is part of the Organic Acids Test (OAT), which evaluates metabolic byproducts in urine to assess cellular function, nutrient status, detoxification capacity, and gut health. The reference range for this test is adjusted for age and sex, as metabolism and detoxification rates differ between children and adults.
Summary
Hippuric acid is a key detoxification marker on the Organic Acids Test (OAT) that reflects how efficiently the body processes environmental chemicals, food preservatives, and microbial byproducts. In children, especially males under 13, elevated levels may point to excess environmental toxin exposure, gut imbalance, or increased detoxification demand.
Evaluating hippuric acid alongside related OAT markers—such as benzoic acid, quinolinic acid, and detox pathway intermediates—helps build a more complete picture of liver function, gut health, and overall metabolic balance.
What does it mean if your Hippuric (Males Under Age 13) result is too high?
1. Environmental or Chemical Exposure
High hippuric acid levels are most commonly linked to exposure to toluene, a solvent found in:
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Paint thinners, adhesives, gasoline, and nail polish removers
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Household cleaning products and industrial fumes
The body metabolizes toluene into benzoic acid, which is then conjugated with glycine to form hippuric acid for excretion. Elevated hippuric acid in a child may reflect environmental or household chemical exposure, particularly in poorly ventilated areas.
2. Gut Microbial Overgrowth or Dysbiosis
Certain intestinal bacteria and yeasts can metabolize dietary components into benzoic acid, increasing hippuric acid production. Elevated levels may therefore reflect gut dysbiosis—an imbalance of beneficial and harmful microbes in the digestive tract.
This may occur with:
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Yeast or fungal overgrowth (e.g., Candida)
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Clostridia species imbalance
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Chronic constipation or poor digestion
3. Increased Dietary Intake of Benzoates
Foods and beverages containing benzoic acid or sodium benzoate as preservatives can elevate hippuric acid levels. These additives are found in:
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Soft drinks, fruit juices, and flavored beverages
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Packaged snacks and processed foods
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Certain pickled or preserved foods
4. Enhanced Detoxification Response
In some cases, a mild increase in hippuric acid may reflect an active and functional liver detoxification process, as glycine conjugation is a normal Phase II detox pathway. However, chronically elevated values may indicate that the liver and detox systems are under strain or compensating for persistent exposure.
Supporting Healthy Hippuric Acid Levels
1. Reduce Environmental Exposure
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Avoid or limit use of products containing toluene, benzene, or xylene.
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Ensure adequate ventilation when painting, cleaning, or using solvents.
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Use low-VOC (volatile organic compound) household products.
2. Improve Diet Quality
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Limit processed foods and soft drinks containing benzoates.
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Increase antioxidant-rich fruits and vegetables to support liver detoxification.
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Ensure adequate protein intake to provide amino acids like glycine for detox pathways.
3. Support Gut Health
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Encourage a balanced gut microbiome through probiotics, fiber-rich foods, and avoiding unnecessary antibiotics.
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Address possible yeast or bacterial overgrowth if indicated by other OAT markers.
4. Optimize Detoxification and Nutrient Support
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Nutrients supporting glycine conjugation include glycine, magnesium, vitamin B6, and N-acetylcysteine (NAC).
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A healthcare provider may recommend a targeted detoxification or gut-rebalancing program if multiple OAT markers indicate metabolic or microbial stress.
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