Hypokalemia in people suffering from bulimia nervosa can be caused by the following:
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Abuse of diuretics. (This can lead to increased urination and loss of potassium.)
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Self-induced vomiting. (This can cause the loss of electrolytes, including potassium.)
Food restriction may also contribute to overall electrolyte imbalances but is not a direct cause of hypokalemia like the other two factors listed. Abuse of alcohol, while it can lead to various health issues, is not a primary cause of hypokalemia in the context of bulimia nervosa.
Therefore, the correct answers are:
- Abuse of diuretics.
- Self-induced vomiting.