I have a testimonial on the walnut oil. I've been oil pulling for about 2 months twice a day. About the 4th week I tried walnut oil. The next morning I woke up with a numb swollen throat and my glands were really swollen (nothing like this ever happens to me). At first it scared me so I used sunflower instead that day. But then I thought about it "just being food" and I didn't think I was allergic to it, so I continued with the walnut oil the next day and a day or two later my glands were back to normal and all was well. I also want to add that no other oil has given me any reaction even close to that. I think it was a cleansing experience (I don't think I was sick). I can't wait to try it again! So many oils!