How long does it usually take to form an addiction?

How did Frederick banting conduct the experiment to discover insulin? Where does ink found in pens come from? Why regular smoker get out of breath sooner than nonsmoker of similar age and build? What kind of alcohol not to drink while having a yeast infection? What do you need to know about getting a retainer? What is a health problem with extreme thirst and sugar cravings as a symptom? What best describes the hypoglycemic effect of insulin? Where does digestion occur in a paramecia? I have to use cloth tape on your butt to hold my bandages on from surgery but Im getting a rash on your buttcheeks because of it when can you use to stop the itch and make it go away? What are the longitudinal muscles in the esophagus called? What are the symptoms of acute renal failure? What is the current m anagement of macular degeneration? Can Australian Shepherds be used as Epilepsy dogs? What is rectal discharge? What is the thing that breaks if you throw onto water but does not breaks if throw on ground? What condition caused by the over firing of neurons in the cerebral cortex? How does blood restrict fluid loss? Lymph node culture? What Type of plant vein which carry water? What very small blood vessel is next to the body's cells?