Marijuana withdrawal effects – What will my son feel?

My son just graduated college. He can’t get a job because of the economy (he has a B.S. in Electrical Engineering and a 3.7 GPA from Rutgers), but you probably would not guess that he is an ‘enthusiast’ of cannabis. He also would probably (unfortunately) not be able to get a job anyway because of his smoking pot. He’s been a “pot head” for a while now. My husband and I became aware how often he was smoking it. When we confronted him he said if he stops smoking now he feels uncomfortable and anxious. His doctor prescribed him a medication like Xanax called “Ativan.” What will that do? Will it help or will he feel better? Also are marijuana withdrawal effects that real? I never guessed they would even exist.

Marijuana Withdrawal make you feel weak ?

Hi , im 18 and iv’e smoked marijuana for about 7 months now daily and iv just decided to quite after taking a trip to florida and feeling the withdrawal. i decided better stop now b4 the withdrawal gets worse. i feel really down and moody all the time , my muscles feel weaker than normal , and kinda shakey when i lift things or for various movments. i’m tired through peroids of the day then feel normal. i use travel pills to help me sleep which work well. and somtimes i get constipated . i was wondering if anyone else felt these, mainly the weak tired feeling . plus i wanna go to the doctors to get a checkup which will involve a blood test and prob a urine test . do u think they will detect the THC after a week or 2 of not using it. and if they do would they care? thanks