Question explored with the scientific record
What is causing my food repulsions
The short version: your food repulsions are likely a conditioned response, not a random event, and the evidence points to nausea as the strongest driver, not a mysterious new cause.
The evidence here is almost entirely about pregnancy-related food aversions, not about food repulsions in general. Two studies from 2002 and 2011 [1, 2] found that nausea and vomiting in early pregnancy are strongly linked to food aversions. The 2002 study reported a correlation of 0.53 between nausea and aversions [1]. The 2011 study found that 73.6% of pregnant women reported food aversions, and 75.9% reported increased odor sensitivity [2]. A 2025 review [3] identifies a specific mechanism: a placental hormone called GDF15 activates a nausea center in the brainstem. This is a real biological pathway, but it only applies to pregnancy.
What about food repulsions outside of pregnancy? The retrieved evidence does not directly address that. The antidepressant studies [6, 7, 8] show that nausea and gastrointestinal upset are common side effects of SSRIs and SNRIs, affecting about 57.5% of those who had any adverse reaction [6]. If you are taking an antidepressant, that is a plausible cause. The nocebo effect [4] is also real: expecting a bad reaction can produce one. But the evidence here does not cover other common causes like gut infections, food intolerances, or metabolic disorders.
| Cause | Evidence in retrieval | How it works |
|---|---|---|
| Pregnancy (nausea) | Strong [1, 2, 3] | GDF15 hormone triggers brainstem nausea center |
| Antidepressant side effect | Moderate [6, 7, 8] | GI upset is the most common ADR (57.5% of those affected) |
| Conditioned aversion (nocebo) | Weak [4] | Expectation of harm produces real symptoms |
| Other (infection, intolerance, metabolic) | None in retrieval | Not studied in these records |
My call: if you are pregnant or on antidepressants, those are the most likely drivers. If neither applies, the evidence here does not answer your question. Confidence: low for the general case, moderate for pregnancy and antidepressant-related causes.
Sources examined 11
-
Food cravings and aversions during pregnancy: relationships with nausea and vomiting
This study investigates the relationships between food cravings, aversions, nausea, and vomiting during pregnancy, finding that while nausea is significantly associated with food aversions, cravings are largely independent of these symptoms.
DOI: 10.1006/appe.2002.0470 -
Food Aversions and Cravings during Early Pregnancy: Association with Nausea and Vomiting
This prospective cohort study investigates the relationship between early pregnancy nausea and vomiting (NVP) and the development of food aversions and cravings among Ecuadorian women, finding that those with NVP are more likely to report aversions to certain foods predicted by …
DOI: 10.1080/03670244.2011.568906 -
Proximate and ultimate causes of pregnancy sickness
A comprehensive review arguing that placental GDF15 acutely drives pregnancy sickness (nausea, vomiting, and related aversions) via the GFRAL/RET axis in the brainstem, outlining its placental origin in catarrhine primates, its phylogenetic context, and competing adaptive hypoth…
DOI: 10.1093/emph/eoaf025 -
Nocebo effects with antidepressant clinical drug trial placebos
This study presents a case of a 26-year-old male who experienced severe hypotension after taking 29 placebo capsules during a clinical trial for an antidepressant, highlighting the significant impact of nocebo effects on patient health.
DOI: 10.1016/j.genhosppsych.2007.01.010 -
Cyp2d6 genotype: impact on adverse effects and nonresponse during treatment with antidepressants—a pilot study
A pilot retrospective study in German psychiatric patients shows CYP2D6 genotype and gene duplications are associated with adverse effects and nonresponse to CYP2D6-dependent antidepressants, suggesting genotype-guided therapy may be beneficial.
DOI: 10.1016/j.clpt.2003.12.015 -
A Study on Adverse Effects of Antidepressants in a tertiary care teaching hospital
Initiation of antidepressants in a tertiary care hospital led to adverse drug reactions in about 32% of patients, with SSRIs most implicated and gastrointestinal symptoms the most common, typically mild in severity.
DOI: 10.30750/ijpbr.6.4.6 -
Incidence and predictors of activation syndrome induced by antidepressants
A retrospective clinical study in Japanese outpatients treated with antidepressants to determine the incidence of activation syndrome, identify predictors (notably personality disorder), and describe interventions and outcomes.
DOI: 10.1002/da.20438 -
0807 Sleep-related hiccups: A case report of antidepressant associated hypnic jerks
This paper reports a single case of antidepressant-associated sleep-related hiccups and hypnic jerks, with video/audio documentation and polysomnography confirming severe sleep events and leading to CPAP intervention, highlighting a potential adverse effect of antidepressants on…
DOI: 10.1093/sleep/zsac079.803 -
Genetic variations in CYP2B6 and CYP2C19 genes and their effects on antidepressant actions and adverse effects of sertraline in patients with majordepressive disorder
In a Pakistani hypertensive cohort (n=83), ACE inhibitor therapy significantly reduced systolic and diastolic blood pressure after two weeks, but the SLCO1B1 SNPs rs4149057 and rs2291075 were not significantly associated with this antihypertensive response.
DOI: 10.55627/pmc.004.002.01084 -
A Review of Antidepressant Medications in the Treatment of Major Depressive Disorder: Effectiveness vs. Side Effects
This systematic review and meta-analysis (2010–present) evaluates the comparative efficacy, tolerability, and safety of SSRIs, SNRIs, TCAs, and MAOIs for adults with major depressive disorder, finding SSRIs most effective but with prominent sexual side effects that affect adhere…
DOI: 10.59075/rjs.v3i3.164 -
Characteristics and Reasons Associated with Nonacceptance of Selective Serotonin-Reuptake Inhibitor Treatment
This study investigates the characteristics and reasons associated with the nonacceptance of selective serotonin-reuptake inhibitor (SSRI) treatment among patients in Dutch community pharmacies, revealing that fear of adverse effects and low educational levels significantly cont…
DOI: 10.1345/aph.1k516