As a result if excessive vomiting people with bulimia often have low levels

They often have low chloride levels.

Bulimia is characterized by recurrent binge-eating episodes where an individual consumes abnormally large amounts of food in a short period of time. Binge episodes are linked with a sense of loss of control. Which makes the person to compensatory behaviors such as self-induced vomiting, fasting and overexercising People with bulimia have a fear of gaining weight Repeated vomiting causes decreased level of chloride in the body as well as erodes the enamel of the teeth leading to yellowing of teeth, mouth sensitivity, and rapid tooth decay.

diabetes,smoking,high blood pressure,high cholesterol,obesity,inactivity

depends where it is? i got mine on my arm and from 1-10 it was a 3 different spots react differently