OR6A2 rs17888560: Cilantro Taste Perception and Your Genetics
The rs17888560 variant is a genetic marker located within the OR6A2 gene, which is involved in how we perceive specific odors. Research suggests this variant may influence whether an individual perceives the taste of fresh cilantro as soapy or unpleasant.
What each genotype means
Increased soapy taste sensitivity
This genotype is associated with an increased likelihood of perceiving a soapy taste when consuming fresh cilantro. Research suggests this is due to the role of the OR6A2 gene in detecting specific aldehydes found in the herb, which some individuals interpret as a soapy or unpleasant flavor.
This genotype is found in a significant portion of the population, with the minor allele frequency reported at approximately 0.15 in Europeans and 0.20 in South Asians.
Intermediate soapy taste sensitivity
Individuals with this genotype carry one copy of the variant associated with soapy taste perception. You may or may not experience the soapy flavor profile when eating cilantro, as taste perception is influenced by both genetic factors and environmental exposure.
This heterozygous genotype is common in populations where the variant is present, occurring in roughly 1 in 4 to 1 in 3 individuals depending on ancestral background.
Typical cilantro taste perception
This genotype represents the absence of the specific variant often linked to the soapy taste perception of cilantro. You are less likely to report the soapy flavor associated with this olfactory receptor variant compared to those carrying the A allele.
This is the most common genotype in many global populations, though frequency varies significantly by ancestry.
Understanding the rs17888560 Variant
The rs17888560 variant is a single-nucleotide polymorphism (SNP) situated within the OR6A2 gene on chromosome 11. In genetics, a SNP represents a variation at a single position in the DNA sequence among individuals. This specific location is part of a cluster of olfactory receptor genes that play a critical role in the human sense of smell. By acting as a molecular sensor, the protein encoded by this gene helps the brain identify and interpret various chemical compounds in the environment. While many people may not be aware of their specific genotype at this location, it serves as a point of interest for researchers studying the genetic basis of sensory perception and food preferences. Because this variant is located in a region responsible for detecting volatile organic compounds, it is a primary candidate for explaining why individuals have such polarized reactions to the flavor profile of coriander leaves.
The Role of the OR6A2 Gene
The OR6A2 gene encodes an olfactory receptor protein, which is a member of the G-protein-coupled receptor (GPCR) family. These receptors are expressed in the sensory neurons of the nose and are responsible for binding to odorant molecules. Once an odorant binds to the receptor, it initiates a signal transduction pathway that sends information to the brain, resulting in the perception of a specific smell. Cilantro contains several chemical compounds known as aldehydes, which are responsible for its distinct, pungent aroma. The OR6A2 receptor has been shown to have a high binding specificity for these particular aldehydes. When the receptor successfully detects these compounds, it triggers the neural response that some individuals interpret as a soapy or metallic taste. This biological mechanism highlights how our internal genetic hardware directly shapes our subjective experience of the world, including the foods we choose to eat or avoid.
Research and Evidence Strength
Scientific interest in the genetic basis of cilantro preference has grown significantly over the last decade. Genome-wide association studies (GWAS) have identified SNPs within the olfactory receptor gene cluster, including the region containing OR6A2, that correlate with the perception of a soapy taste. However, it is important to note that the evidence linking specific variants like rs17888560 to this trait is considered limited. While studies have found statistically significant associations in European populations, the heritability tagged by common SNPs is relatively low, suggesting that other genetic and environmental factors also contribute to taste perception. Because the sense of smell is complex and involves many different receptors working in concert, no single variant can fully predict an individual's preference. Current research serves as a fascinating look into sensory genetics, but it should not be viewed as a definitive diagnostic tool for determining personal food aversions.
Population Frequency and Distribution
Genetic variations in olfactory receptors are often distributed unevenly across different ancestral groups. For the rs17888560 variant, data indicates a minor allele frequency of approximately 0.15 in European populations and roughly 0.20 in South Asian populations. These frequencies suggest that the variant is relatively common, yet the actual experience of the 'soapy' taste remains a subjective trait that varies widely even among those who share the same genotype. Because these frequencies are based on population-level averages, they do not provide specific information about an individual's personal genetic makeup. Understanding these frequencies helps scientists map the evolutionary history of human sensory perception, but it also underscores the diversity present within global populations. As more data is collected from diverse cohorts, our understanding of how these frequencies correlate with sensory traits across different ancestries will continue to evolve.
What You Can Do With This Information
Information regarding your genotype at the rs17888560 locus is primarily for educational and personal interest. It is important to recognize that this variant is not associated with any medical condition, nor does it require any clinical intervention. If you find that you dislike the taste of cilantro, you are simply experiencing a common sensory variation that is well-documented in the scientific literature. You cannot change your genetic sequence, but it is worth noting that taste preferences can sometimes be influenced by repeated exposure and culinary preparation methods. This information should not be used to make health decisions or dietary changes that impact your nutritional intake. If you have concerns about your diet or sensory perception, it is always best to consult with a registered dietitian or a healthcare professional. Treat this genetic insight as a fun way to learn more about your biology rather than a medical diagnosis.
How common is this variant?
The minor allele frequency for this variant is approximately 0.15 in European populations and 0.20 in South Asian populations.
Frequently asked questions
Why does cilantro taste like soap to me?
Cilantro contains aldehydes that some people are genetically predisposed to detect as a soapy or metallic flavor. This is linked to variations in olfactory receptor genes like OR6A2.
Can I change my cilantro taste perception?
While your genetics are fixed, some people find that their taste preferences change over time with repeated exposure. Cooking or crushing the leaves can also alter the chemical compounds and change the flavor profile.
Is the soapy taste of cilantro a sign of a health problem?
No, the perception of a soapy taste in cilantro is a normal variation in human sensory perception. It is not a symptom of any medical condition or health issue.
Are there other genes involved in cilantro taste?
Yes, the sense of smell and taste is complex and involves many different genes. While OR6A2 is a primary candidate, other olfactory receptors likely contribute to the overall experience.
Sources & further reading
Educational information only, last refreshed 9/15/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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Variant strongly associated with the soapy taste perception of cilantro (coriander leaves) via altered olfactory receptor OR6A2 sensitivity.
Variant near the olfactory receptor gene OR6A2 associated with the perception of cilantro as soapy.
Variant in the olfactory receptor cluster strongly associated with the perception of soapy or pungent taste from cilantro (coriander).
Variant in the olfactory receptor cluster strongly linked to the soapy taste perception of cilantro.
Linked with perceiving cilantro/coriander leaves as having a foul, soapy flavor due to aldehyde detection.
Variants within the OR6A2 olfactory receptor cluster modify human chemoreception and perception of the soapy or pungent aroma compounds in cilantro (coriander).