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Genomelink

Genomelink (https://genomelink.io/) is a personal DNA cloud where you find everything you can do with your raw DNA data. Unleash your DNA data.

Get 200+ traits, ancient ancestry, nutrition/fitness advice, family finder, and more. Our mission is to help people know and do more with DNA data. We create an infrastructure in consumer genomics.

10/19/2026

Verbal recall has two distinct genetic regions behind it.

Verbal memory has two parts: immediate recall (very recent information) and delayed recall (recall after a time lag). These two are processed in different parts of the brain, and they have different clinical meanings — declines in delayed recall specifically have been linked to Alzheimer's disease.

In a genome-wide association study with older adults, researchers found that distinct genetic regions corresponded to immediate recall versus delayed recall. Different DNA addresses for different types of remembering — which lines up with the brain-region story.

Our memory naturally declines with age, but sometimes the impairment is sharper than expected, hinting at the onset of dementia. Sorting which kind of recall is affected matters clinically.

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Reference: Genetic variants specific to aging-related verbal memory: Insights from GWASs in a population-based cohort.

10/16/2026

Risk-taking has genes shared across ethnic groups.

Risk-taking behavior shows up as a feature of conditions like ADHD and bipolar disorder, and it's tied to specific brain-structure and function changes. Researchers identified eight new gene loci tied to self-reported risk-taking, plus two loci specific to male risk-takers and additional loci predicting female risk-taking — meaning the genetic architecture is partly s*x-specific.

Each variant had only a small effect on brain structure (effect size comparable to age). Self-reported risk-taking was also tied to ADHD, PTSD, major depressive disorder, and schizophrenia. The most striking part: the genetic associations were conserved across ethnic groups — non-British white, South Asian, African-Caribbean, and mixed-race individuals showed very little variation.

The findings suggest people carrying these variants may be predisposed to certain psychiatric conditions through the same risk-taking pathways.

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Reference: Genetics of self-reported risk-taking behaviour, trans-ethnic consistency and relevance to brain gene expression.

10/14/2026

Who tries cannabis and who doesn't — partly genetic.

Cannabis use overlaps with mental-health conditions like substance abuse and schizophrenia, and twin studies have long suggested a genetic component. Researchers ran a very large GWAS to find genetic differences between people who have used cannabis and people who never have.

They identified 16 regions of the genome tied to cannabis use, most of them previously unlinked. Combined, these loci explain about 11% of the variation in cannabis-use status. CADM2 was a standout — it's also been linked to alcohol consumption, risk-taking, and a carefree personality. NCAM1, another hit, drives neuron creation and excitation and has been linked to markers of substance abuse and schizophrenia.

The study didn't separate regular users from one-time experimenters, so the granularity is limited. But it shows a clear genetic basis for who's inclined to try it.

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Reference: GWAS of lifetime cannabis use reveals new risk loci, genetic overlap with psychiatric traits, and a causal influence of schizophrenia.

10/12/2026

How sensitive you are to salt may sit in SLC4A5.

Sodium is essential for cells, especially neurons — but too much raises hypertension risk, which sets up cardiovascular events. In a study by Pilic and Mavrommatis, researchers examined healthy, predominantly Caucasian adults and tested salt sensitivity by measuring blood-pressure change after a week of low-sodium versus high-sodium diet.

Loci on SLC4A5 were tied to sodium sensitivity, and a separate SLC4A5 locus was tied to sodium intake itself. Interestingly, the "salt taste detection threshold" — the sensory ability to taste salt — was NOT linked to salt intake. Meaning how much salt people ate didn't depend on how well they could taste it.

Small sample limits the power to detect smaller effects, but this offers preliminary genetic grounding for who's most affected by their salt habits.

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Reference: Genetic predisposition to salt-sensitive normotension and its effects on salt taste perception and intake.

10/09/2026

Why some people are just bubblier — partly genetic.

Positive affect — the general tendency toward positive emotions — is reported to be up to 64% heritable. In a 2017 study of more than 2,500 African American participants, researchers identified two loci tied to differences in positive affect and well-being, with results holding after adjusting for gender and childhood maltreatment.

At both loci, carrying the minor allele was tied to greater positive affect. One of the loci also changed expression of some microRNAs — small RNA pieces involved in gene regulation. One of those microRNAs has previously been found to influence the reward pathway, which is core to how content or happy a person feels. So this gives a plausible mechanism, not just a correlation.

Sample is on the smaller side for GWAS and the existing literature is sparse — replication in other populations is needed.

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Reference: Genome-wide association study of positive emotion identifies a genetic variant and a role for microRNAs.

10/07/2026

Sensitivity to floral scents may sit in one chromosome region.

Beta-ionone is the key compound behind floral scents. In a GWAS of 100 Caucasian adults, researchers found a genetic region on chromosome 11 strongly tied to beta-ionone perception — and the region contains a cluster of 12 odor receptor genes.

Variation at this gene locus alone explained an astounding 57.8% of differences in beta-ionone sensitivity — which is huge for a single-region effect. The researchers describe two "sensitivity modes": people with the dominant G allele perceive floral scents readily, while people with the recessive variant are less able to.

Sample size was modest (up to 187 individuals), but the proportion of variance explained is remarkable. Your flavor world is genuinely different from someone else's.

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Reference: Identification of regions associated with variation in sensitivity to food-related odors in the human genome.

10/05/2026

How aggressive you are may track an oxytocin gene.

Aggression — behavior intended to harm or distress others — develops particularly through adolescence. Stress is a known trigger, but a person's response to stress is partly mediated by genetics. Researchers focused on the oxytocin receptor gene, which helps regulate emotional responses like empathy.

In a study of Han Chinese 10th and 11th graders, teens with the AA genotype (two copies of the A variant at a specific oxytocin receptor locus) reported higher aggression on a questionnaire than carriers of one or two G variants. The interaction also depended on gender: boys with the AA genotype plus more stressful life events were significantly more physically aggressive — girls with the same combo were not.

Sample was 197 — small for this kind of gene-environment work — but the find aligns with what's known about oxytocin's role in emotional regulation.

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Reference: Effect of the interaction between oxytocin receptor gene polymorphism (rs53576) and stressful life events on aggression in Chinese Han adolescents.

10/02/2026

Resilience may sit in a single SNP.

Resilience — pressing on through hardship — is a measurable trait. In a genome-wide analysis of an African American population, researchers identified one new gene locus, rs322931, associated with positive affect. People carrying the minor (less common) allele also showed less negative affect, more spiritual well-being, and more resilience.

The proposed mechanism: rs322931 may influence positive affect via the brain's reward feedback loop. The microRNAs modulated by rs322931 are also induced by narcotics like co***ne and amphetamine — which hijack the same reward loop to drive addiction. So the same circuit that's targeted by drug-driven highs may be quietly tuning whether you bounce back from setbacks.

Sample of 3,728 is on the smaller side for GWAS, so only one locus was identified. But mapping a trait this abstract onto a single SNP is a noteworthy starting point.

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Reference: Genome-wide association study of positive emotion identifies a genetic variant and a role for microRNAs.

09/30/2026

Grip strength has 16 genetic loci behind it.

Researchers identified 16 specific loci tied to grip strength (a standard proxy for muscular strength) and tested how grip strength causally relates to disease. They found a negative correlation between grip strength and adverse cardiometabolic events — meaning higher grip strength tracks with lower cardiovascular risk.

Put differently: a chunk of cardio protection might come from the genetic luck of being strong, on top of the protection you can build by training. The work hints at a future where personalized fitness regimens could use someone's strength-related variants to design training.

U.S. Bureau of Labor Statistics projects personal-training jobs to grow 24% (2010–2020) — far outpacing the 14% average across occupations.

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Reference: Biological Insights Into Muscular Strength: Genetic Findings in the UK Biobank.

09/28/2026

Facial attractiveness has two specific genes behind it.

Attractiveness affects everything from school performance to careers, and the global cosmetic industry is a $500B testament to how much it's valued. Hu and colleagues used more than 4,000 Wisconsin high school graduates of European descent to identify gene loci linked to facial attractiveness.

Two loci were statistically significant: ANTXRLP1 (a pseudogene near ANTXRLP, which is tied to skin pigmentation) and CDC42EP3 (tied to height, near LINC00211). Splitting by s*x revealed different patterns — female facial attractiveness was negatively associated with BMI (lower BMI tracked with higher attractiveness scores), while male facial attractiveness was positively associated with blood cholesterol (which is involved in testosterone production).

The study has limited diversity, but it's one of the first to flag specific genetic contributors to perceived attractiveness.

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Reference: Genome-wide association study reveals s*x-specific genetic architecture of facial attractiveness.

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