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A member asked:
Does the improvement in conc. that nicotine causes disappear over time as the receptors become desensitized and smoker increases dependency?
A doctor has provided 1 answer
No: Tolerance does not develop to all effects of dependency-producing substances at the same rate, and nicotine seems to be able, even in relatively small doses, improve concentration and focus; withdrawal from nicotine however produces a marked disruption of concentration and focus that can be disabling, particularly to people with jobs that require it.
Answered 10/10/2020
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