Noah and Moses were said to have lived over 900 yrs (not in the historical record) in a time when filth was common, and a mere scratch, rancid meat, polluted water etc, were not yet known to be major factors of serious illness or death... Modern antiseptics and medicines etc. for treating simple life-threatening infections, for example, weren't discovered for thousands of yrs...Where are all the 900 yr olds now in this day and age??