This is a personal choice for the patient to make! There is NO GUARANTEE that the “life-saving treatment” to which you refer will cure anyone! And who’s to say that the Indian herbal treatment isn’t a valid option which would save his/her life without practically killing the patient in the process, as chemotherapy and radiation do? Traditional medicine certainly does NOT hold all the answers. Personally, I would explore all other avenues of treatment before to resorting to traditional methods. Right now, I have TWO good friends (one age 62; the other 71) who died just recently, not from cancer, but from bad effects of chemotherapy! The bottom line on this question is that in this life, none of us will get out alive! The only three things we’re guaranteed in this life are 1) the love of God, 2) free will, and 3) that we’re all going to die from some thing, at some time and in some place. It’s not up to us! So the answer to the question is YES, a Catholic CAN refuse standard medical treatment!