They don't, drug addiction is simply your body, having functioned with drugs for so long, requiring drugs to function "correctly" i use the quotation marks because your body doesn't actually function correctly with drugs it just begins to think it needs the drugs to function and that's why you get withdrawl.
some people have genes that make it easier for them to become addicted to tobacco
heredity determines the efficiency, and shape of meiosis. Somebody, with a history of bad disease is not likely to have healthy children.
Experiments
There are a number of choices in the Portland area (we assume you mean Oregon). See the link below.
Prescription drug addiction can be a real risk when you are asked to take a set drug for a long period of time. More details can be found online (see link at the end), however if you have any worries, please speak to your doctor. http://www.nlm.nih.gov/medlineplus/prescriptiondrugabuse.html
Supervised, but yes. A fatherless child is far more damaging. see link
The Law of Addiction states ""Administration of a drug to an addict will cause re-establishment of chemical dependence upon the addictive substance." The term was used in 1988 in an article by Joel Spitzer entitled "The Law of Addiction.See the related link.
Crime refers to illegal activities that violate laws, while drugs refer to substances that can alter a person's physical or mental state when consumed. Drug-related crimes involve the illegal possession, distribution, or use of drugs, which is a subset of criminal activities.
Genetic link can be defined as a genetic connection. An example of a genetic link is the heredity and traits that a child inherited from his/her parents.
Please see the link below.
A physiological addiction involves physical dependence on a substance, where the body develops tolerance and withdrawal symptoms. A psychological addiction is more focused on the mental craving and emotional attachment to a behavior or substance without necessarily involving physical withdrawal symptoms.
You aren't alone, there are a lot of people that food addiction affects. Here is a link with some information that will be helpful to you. www.healthyplace.com/tvshowblog/���controlling-overeating-and-food-addiction-sept-29