Detox is the first step of a comprehensive alcohol or drug rehabilitation program. When your mind and body become addicted to drugs or alcohol, it forces your body’s (and especially your brain’s) chemistry to function differently. Chemical changes occur in your brain, digestive system, skin, blood stream and internal organs throughout an addiction to one or multiple substances. Regardless of whether it’s alcohol, prescription drugs, heroin or methamphetamine, quitting cold turkey, with no assistance can obviously be very difficult. Once a chemical dependency is created psychologically and physically, your body will need to adjust to the absence of those substances, which is best completed in a medically-supervised setting.