They accepted it based on ignorance… Maybe it should be obvious?

I understand that studies have shown that the days of female desire are mainly from the day of menstruation until the end of the 7 clean days.
Then it's weak.
In fact, it turns out that a couple who also keeps 7 clean
Fulfills his season but certainly not hers.

It is likely that when the women of Israel took this upon themselves, they did not know.
Is it possible today, when it is scientifically known, to eliminate the aggravation?
(Or did natures change and they did not accept a nature like ours?)