Indeed, and the purpose of my post was in response to the original poster Isidora for the purposes of education rather than pseudo-medication with potentially harmful flax oil.
Unfortunately canine cancer does not allow the canine owner the luxury of experimentation with "miracle cures". No matter the type of cancer, it usually progresses extremely rapidly in our dogs. Left untreated Osteosarcoma is terminal in 1-2 months. For my Lymphoma dog, the prognosis was 4-6 weeks without treatment. So whatever decisions she makes now, will have immediate and long term implications.
It's one thing to consider supplements, and diet as adjuncts to standard Chemotherapy. But it's another to consider a flax oil plus cottage cheese diet as the cure for cancer, and/or a substitute for proven therapies. If it were that simple cancer would no longer be a problem, and the price of cottage cheese would skyrocket! Right? Note this is not an advocation for Chemo in regard to Osteosarcoma, as that particular type of cancer doesn't respond well to Chemo. Also supplements should be approached with the idea they are given if there is no evidence of possible harm. Given the potential for Omega-6 fatty acids to be produced by the host from flax oil, the potential for harm does exist. Especially since a much better alternative in the form of fish oil exists for the Omega-3s.
I wish Isidora the best in her decision making for her puppy dog.