Which one of the following risk factors for general poor health is also associated with enamel erosion of the teeth?

Bulimia is associated with enamel erosion of the teeth primarily due to the frequent cycles of vomiting that occur with the condition. The stomach acids brought up during vomiting can come into contact with the teeth, which is highly damaging to tooth enamel. Enamel erosion can lead to increased sensitivity, higher risks of decay, and aesthetic concerns.

While other factors listed, such as alcoholism, obesity, and smoking, can contribute to general poor health, they are not directly linked to the specific mechanism of enamel erosion in the same way as bulimia. Alcoholism can lead to dry mouth (xerostomia) and poor oral hygiene, which might contribute to dental issues, but it does not directly cause enamel erosion through acidic exposure in the same manner that bulimia does. Obesity may lead to other health complications, and smoking is linked to various oral health issues, including gum disease and oral cancers, but neither has the same direct relationship with enamel erosion as bulimia does.