This is actually more of a Catholic Faith question than a Medjugorje questions but I will try to give a simple answer. This could be a very long discussion but I think sticking to the simplistic reality of Our Lady's role in the Church is enough.
We know very little about the secrets of Medjugorje. First, Our has Lady allowed the third secret to be known, which is: There will a permanent, indestructable, supernatural sign left at the place of Our Lady's first apparition in Medjugorje on the hill Podbrdo at the conclusion of the apparitions.
In the Old Testament and in the New Testament, there are many examples of fasting. Jesus fasted frequently. According to Tradition, fasting is
It is important to first understand that the Church will not continue its investigation of Medjugorje until the apparitions of Our Lady are complete. But the last official statement by the commission of bishops set up to investigate Medjugorje declared in 1993: "We bishops, after a three-year-long commission study accept Medjugorje as a holy place, as a shrine.