What do you doctors think about mk-7 vitamin derived from natto ? do you think it's a good supplement to take?

Yes but more benefit: To the one who is selling , yes the fermented soybeans (natto) , has higher concentrations mk-7 , consumed certain parts of japan , limited study showed elderly woman have less fracture hips , at 23 you should not worry , be very active eat balanced diet with regular exercises that will build your bone , don't waste money on theses products