The Use of Smart Devices in Capturing Digital Biomarkers in Eating Disorders

Inclusion Criteria: * All participants must be aged 10 years or older. * Diagnosed with an eating disorder by a clinician as per the World Health Organization\'s ICD-10 (F50.0 through F50.9) or ICD-11 (6B80 - 6B85; 6B8Y, 6B8Z) classification * Must have a minimum once weekly in-person clinic physical assessment as part of their current treatment plan at the start of the study participation * Fluent in English * Capable of reading and understanding the information sheets and consent forms to provide written informed consent. * For participants aged between 10 and 16 years, parental consent is required first before offering the opportunity to the child. A parent or legal guardian must also be able to read and understand the information sheets and consent forms to provide written informed consent on behalf of the child under 16 years of age. Exclusion Criteria: * Active substance use such as drug or alcohol misuse * For alcohol consumption of more than 21 units of alcohol per week (1 unit is equivalent to half a pint of beer (285ml), 25ml of spirits, or one glass of wine) * Diagnostic coding for current mental and behavioural disorders due to substances (ICD10: F10 through F19; ICD11: QE10 through QE1Z and 6C40 through 6C4H) * A diagnosis of a neurological disorder, including but not limited to cerebrovascular diseases, either currently or in the past or where the eating disorder for which the participant is being treated is considered aetiologically-secondary to a neurological disorder (e.g. pica secondary to a brain injury). * A diagnosis of schizophrenia or related psychotic disorder. * Pregnancy. * A diagnosis of developmental learning disorder (ICD10 F80.0 through F81.9: ICD11: 6A03) or intellectual disorders (ICD10: F70.0 through F79.9; ICD11 6A00).