The frequency, the regularity, and the abundance of meals render useless an adaptive function that has played an important part in the survival of human races, the adaptation to lack of food. In primitive life men were subjected to long periods of fasting. When want did not compel them to starve, they voluntary deprived themselves of food. All religions have insisted upon the necessity of fasting.
ALEXIS CARREL/ Man the Unknown
Your Opinion on this topic with recent evidence.
Fasting is necessary for keeping good health with the required energy to carry out our everyday action of our life .With this fasting helps us to carry out our own introspection & sometimes help us to move toward spirituality .
This is my personal opinion
Fasting is not diet, and it is meaningless without its reference to God, as also there is not Spiritual Life without the presence in our lives of Holly Spirit. Fasting is a religious practice, and there are other more suitable words such as (ἐγκράτεια) self-restrain/moderation that signify practices with any other "spiritual" meaning. The order of God to Adam and Eva was fasting. Violating the rules of fasting, though, did not harm their body's fitness, as when one violates the rules of a diet. Which proves that violating the rules of fasting in Paradise, was a direct violation of the will and love of God. Devil convinced them that eating an innocent fig/apple would not lead them to death. On the contrary they could decide (as gods) for themselves, what they should obey to and what not. They were expelled out of Paradise, because of disobedience and not because of eating a fig (or an apple). Nor was meant that the fig/apple was poisonous. The death caused was mainly spiritual (Adam did not die at once), because violation of fasting was a spiritual transgression (Adam lost Holy Spirit). Biological death followed later as a result of the spiritual one. The order of fasting from that fruit was not given to them for dietary reasons, but as a chance to practice themselves to voluntarily adhere to the love of God, Who is the spring of eternal Life. Free violation of the order of fasting in Paradise, meant that the mortal people were trusting now themselves as if they themselves were self-existent beings and immortal gods. However, only God is self-existent being, while humans are completely dependent on Him in order to live. And the order of fasting to the mankind was given in order to preserve their shelf-awareness of being dependent from God. That is why, when devil tempted Jesus in the desert asking Him to turn the stones into breads, He answered to him that existence and life of man is not secured only if he eats bread, but mainly when he stays in communion to the Son and Word of God. If you brake this bond by violating His (any) Will, then you cut yourself from the spring of Life, causing your eternal death. Therefore, fasting also in our days has not only the meaning of following the example of Jesus Christ in the desert, but also of that very same old training to obedience, trust and consistency to the Will and to the Love of God, through the obedience now to His Own Church, in order to preserve the awareness that we are dependent from God and that we are not self-existent beings. Humbleness is the natural state of human existence, and fasting helps to preserve this sense. It is the humbleness of obeying to God's command the element that extinguishes the temptations, which the full-of-pride devil raises in our lives, and not any magical recipe of a diet we ourselves impose to ourselves (a practice full of pride itself). Understanding or explaining fasting as diet, we still delude ourselves that life is a matter of bread and food, thus absolutely missing our eternal dimension and the true point around which spiritual Life is revolving, that is, God Himself and not ourselves. Being strong willed and opinionated at the interpretation of fasting as a practice isolated from God, is counter-spiritual.
On the other hand, the opposite of "fasting" is not "eating", but "disobeying to God". For, violating fasting by eating from "the tree of experiencing both good and evil", was the wrong way to achieve eternal life, since this was an influence of and an obedience to devil. Only the Tree of Life could bestow eternal life according to the will of God. That second tree, the Tree of Life, which was also planted in Paradise, was the One Who said: "I am the true Vine", "the Vine of Life". Therefore, Jesus ordered His disciples the exact opposite of what Adam did: According to Septuagint Adam "received and ate" (ἔλαβε καὶ ἔφαγε)) from the tree of disobedience, while Jesus ordered His disciples "receive and eat" (yes, He used the very same words of Genesis - according to the Greek text "λάβετε φάγετε") "from My body and blood, which is shed for your sins and from which you must drink, if you want eternal Life". So, both fasting and receiving Holy Communion is the way to express our obedience and love to Whom we are absolutely dependent from, and our awareness that our creation by Him was out of nothing. This is an Orthodox explanation of "fasting" within the context of the community that brought it forth and preserves this practice until the present day unchanged: As Jesus said: "Who is the one who loves Me? The one who keeps My commands".
Fasting has any meaning when there is a temptation occurring against our spiritual discipline. Then it has a reason to overcome it. It is part of the spiritual wellbeing nurtured with grace.