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Plain english summary Young people with eating disorders often restrict food intake to a degree which is detrimental to their physical health. Depending on the severity of psychiatric and medical symptoms, patients may be admitted to a mental health or medical ward. In the circumstances that their BMI is detrimentally low, a nasogastric (NG) tube may be placed from nose to stomach to pass nutrition. This systematic review sets out to review the current reported evidence of NG in young people. Results have shown that NG feeding is used commonly in the hospital setting to treat medical instability as a result of severe malnourishment, and in the specialist eating disorders (ED) unit due to failure to meet oral intake. NG feeding may be administered through different methods such as continuously, multiple single meals (bolus), or overnight to supplement day-time oral intake. Routine NG feeding may allow greater initial caloric intake, which does not increase risk of medical complications, and may actually increase initial weight gain thus reducing time in hospital. Differences may be due to variable expertise of staff. Side effects are minimal but may include nasal bleeding or irritation, and imbalances in blood electrolytes which can be reduced by providing supplementation.