He is stealing due to low impulse control and he is and he is mad because we have told him no. He has little to no control over his impulses and refuses to take responsibility for his actions. He will lie ab out the stealing even when caught red handed. I just know this he is hard to control and we have talked with him about his actions for over a year almost daily. We have tried consequences, rewards, etc... He does not seem to care as there is no remorse what so ever. I am at a loss on what to do.

I was a kleptomaniac kid, it was the rush and the acquiring of the item. I believed I also stole because I believed mum and Dad didn't need me asking as I knew they struggled.
Have you had a chat re his drives? What's driving him to steal, is it the buzz or is it similar to my situation ^
Not wanting pressure on a parent.
I stole a new coat once up the lining of the coat I had on. I was so embarrassed my friends all had stuff and my parents were on hard times.

He is on a low gluten and low sugar diet and while some behaviors have ended others have popped up. He never started lying and stealing until the last year, and our concern is this could lead to bigger things. He is 13 and our hope to get this under control.