In a preregistered, cross-sectional study, we investigated whether olfactory loss is a reliable
predictor of COVID-19 using a crowdsourced questionnaire in 23 languages to assess …

Vitamin D plays crucial roles in neuroprotection and neurodevelopment, and low levels are
commonly associated with schizophrenia. We considered if the association was spurious or …

Objective To investigate the prevalence and features of protracted COVID-19 symptoms in
non-hospitalized university students who experienced mild-to-moderate acute illness. …

The diagnosis of schizophrenia includes “positive” and “negative” symptoms. These titles
were developed to respectively reflect if the symptoms are additions to normal experiences, …

Leukocyte telomere length ( LTL ) is longer in association with advanced paternal age, but
this association has not been examined along with family history ( FH ) in schizophrenia. LTL …

Schizophrenia is a debilitating syndrome with high heritability. Genomic studies reveal more
than a hundred genetic variants, largely nonspecific and of small effect size, and not …

BackgroundCOVID-19 has heterogeneous manifestations, though one of the most common
symptoms is a sudden loss of smell (anosmia or hyposmia). We investigated whether …

Objective Eating disorders (ED) and schizophrenia are frequently comorbid and schizophrenia
shares genetic susceptibility with anorexia. Many factors associated with schizophrenia …

Multiple lines of evidence corroborate impaired signaling pathways as relevant to the
underpinnings of schizophrenia. There has been an interest in neurotrophins, since they are …

Background Childhood trauma is emerging as a risk factor for schizophrenia, but its
mechanism with respect to etiology is unknown. One possible pathway is through leucocyte …