Meth addicts start of like any addict. Sometime it can take months before others can tell. It depends on the person and there chemical make up. Some people are able to eat on this drug. I am not saying that anyone involved in this case a drug user. Im just saying that yes it is typical for meth addicts to lose weight and get meth face its not always the case. Its like saying every alcoholic lives on the street never bathes and cant hold a job. Sometimes it can be hard to tell a meth addict by just physical traits