Alcohol and smoking

My husband is currently trying to control his alcohol addiction. It has been a very rough few years with his addiction and he is trying to make changes. Well my husband is having a lot of anxiety coming off the alcohol and trying to deal with stress. He refuses to see a doctor because he doesn't want to be put on a medication. 
My husband wants to start smoking weed now for his anxiety. He feels it will be a better option then taking pills.  
What should I do? Is it a good idea to give someone with an addiction problem weed? 

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