Sorry, your take on morality is not right. There is a 'universal morality,' it is enshrined in the 10 Commandments, and those Commandments are congruent with Natural Law.
All societies abhor the murder of innocents, abhor adultery, theft, false swearing, and adherence to gods which are secondary or false. One can match point-for-point the commonality.
Mosaic Law is partially distinct from the Big 10. Certain dietary presecriptions, etc., were practical guides which had to do with health--and those which were not health-related (no refrigeration, no pasteurization, etc.) were disciplinary.
Not so. Some of the Ten Commandments (e.g. "Thou shalt not do murder") coincide with universal morality (the code of ethics common to all viable societies). Others of the Ten Commandments (e.g. "Thou shalt not make a graven image") are specific cultural taboos which may or may not be emulated by others.
You obviously know nothing about Judaism. Dietary restrictions had nothing to do with health issues.