Hi Shera
It's sometimes hard for anyone raised in the Christian tradition to understand the Jewish mindset when it comes to the Law.
While Christianity holds that the Law was basically a cruel joke God inflicted on mankind to drive home the point that they were "imperfect," Judaism does not.
The Jews regard the Law as a priceless gift from a kind father. G-d gave the Law to Man that he may LIVE by it --literally. Living by the Law will not only enable you to live longer, you will be happier and healthier while you are alive --At least according to the Jews.
The Jews, therefore are coming from an entirely opposite direction when it comes to interpreting the Law. To them, the Law is a blessing, not a curse and the idea that death would be the natural result of observing the Law is an alien concept.
Accordingly, Judaism holds pikuach nephesh (Saving Life) as the very highest of all mitzvoth. For example, if an occupied building collapses on the Sabbath, which takes precedence, Sabbath law or G-d's requirement to preserve life?
The requirement to preserve life trumps all other considerations. The only exceptions are murder, idolatry and sexual misconduct. Any other aspect of the Law could be set aside in an emergency.
The transfusion medicine taboo as taught by Jehovah's Witnesses is something that would not even occur to a Jew. The idea that observance of Kashrut (The dietary law) would result in death is something the Jews simply cannot fathom.
It takes the Christian view of the Law (e.g. A cruel burden) to come up with something as warped as this.
Tom