original: since then , documentation of saffron 's use over the span of 4,000 years in the treatment of some 90 illnesses has been uncovered .
simplifications: since then , documentation of saffron 's use over the span of 4,000 years in the treatment of some 90 illnesses has been uncovered . since then , documentation of saffron use over the span . since then documentation of saffron 's use over 4,000 years in the treatment of around 90 illnesses has been found . more recently , documentation has been uncovered showing a span of 4,000 years where saffron has been used to treat at least 90 illnesses . since 7th century bc , documented use of saffron over a span of 4,000 years , in the treatment of some 90 illness has been uncovered . since then , records of saffron 's use over the span of 4,000 years in the treatment of some 90 diseases has been revealed . from that time , official use of saffron over the span of 4,000 years in the treatment of some 90 illnesses has been known . 1 . since then , written evidence of saffron 's use over the span of 4,000 years in the treatment of some 90 illnesses has been found .