According to my husband, I have totally stopped snoring since starting low carbing and losing some weight, despite the large amount of weight I still have left to lose. I don't know if I had sleep apnea -- I may have but I was never tested -- but I certainly snored. I used to wake up several times a week and find my husband had retreated to the guest room because of my snoring. That has not happened in months and months -- a very nice benefit of low carbing.