Medical research

Study finds serotonin reduction causes long COVID symptoms

Patients with long COVID—the long-term symptoms like brain fog, fatigue, or memory loss in the months or years following COVID-19—can exhibit a reduction in circulating levels of the neurotransmitter serotonin, according ...

Diseases, Conditions, Syndromes

Sudden infant death syndrome may have biologic cause

Sudden infant death syndrome (SIDS) is a case where the death of an apparently healthy infant before their first birthday remains unexplained even after thorough investigation. Death generally seems to occur when infants ...

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