The Quran is not a book of science, it is a book of guidance. However all the facts mentioned in the Quran are sceintifically correct. However we should be careful when trying to interpret the Quran from this perspective. It is because scientific theories can change or can be proven wrong. Does that mean that the Quran was wrong? No obviously, its just that we misinterpreted it.
The same goes for Ahadith and Sunnah. The practises of our beloved Prophet Mohammad PBUH were the best for both spiritual and physical health.