Most antidepressant drugs cause weight gain. While dieting can help reduce the amount of weight gained while taking such antidepressants, some weight gain is unlikely to be preventable. The information above most strongly supports which one of the following? ['All patients taking antidepressant drugs should diet to maintain their weight.', 'A physician should not prescribe any antidepressant drug for a patient if that patient is overweight.', 'At least some patients taking antidepressant drugs gain weight as a result of taking them.', 'The weight gain experienced by patients taking antidepressant drugs should be attributed to lack of dieting.']