You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "what are the body's physical and psychological responses to a lack of nicotine called?" whose answer is Nicotine withdrawal.
Each document should contain about 30 words, and these documents should contain useful information.

Query: physical and psychological responses to lack of nicotine
Useful Output:

Doc 1: "Treatment" of sad emotional states with nicotine over time may also impair innate restorative responses, just as treatment of chronic pain
Doc 2: Although nicotine may cause feelings of euphoria or stress relief, the withdrawal state of the nicotine dependence cycle causes symptoms such as
Doc 3: In this episode, I explain how nicotine impacts the brain and body, including its potent ability to enhance attention, focus, and alertness,
Doc 4: Scientists have found that quitting smoking improves symptoms of some mental health conditions, including depression.
Doc 5: Your attempts at stopping have caused physical and mood-related symptoms, such as strong cravings, anxiety, irritability, restlessness,