CJ is a really important tool when using MM info.
SOC and AW wrote a whole book on the CJ. I recommend giving a read to this book. https://www.amazon.com/Medical-Medium-Celery-Juice-Worldwide/dp/140195765X
It will tell you everything you could possibly want to know about CJ and why it helps us. And how it helps heal hundreds of conditions.
I dont think its really possible to summarize CJ for how much it helps us. Give the book a read :) Its the shortest of all the MM books.
It's hard to reply in a few sentences. AW wrote a whole book about it.