I've been Primal for almost a year now and have slowly started broaching the topic to my parents, who are 20+ years devoted to the vegetarian/soy milk/low fat whole grain diet (I know.) After explaining it to my dad, he seemed very interested. However, the problem is that he has been unable to eat animal products due to his medication. He has prostate cancer and is taking medication (I am not sure which kind) and as a result gets very sick whenever he tries to consume any kind of animal product, especially seafood...one bite of salmon and he will throw up. Eggs don't seem to be a problem, but I know that it is very hard to do the primal diet without animal products. Any ideas on how to work around this, or similar experiences? Also: any ideas on how to convince a very stubborn and soymilk loving mother?