The concussed brain is more receptive to addiction. Nicotine is arguably more or as addictive as heroine. It passes the blood brain barrier easily. Has a very temporary affect with regard to dopamine. It also has a withdrawal symptom. Why would anyone not already addicted want to try an addictive, temporary guaranteed withdrawal product when they are experiencing anxiety, emotional lability, brain fog, pain, irritability...

Not sure this all that an intelligent thing to consider doing?