“Although those things have an appearance of wisdom in a self-imposed form of worship and a false humility, a harsh treatment of the body, they are of no value in combating the satisfying of the flesh.”
Is it wrong to fast?
Paul asked the Christian congregation at Colossae why they continued subjecting themselves to the man-made decrees: “Do not handle, nor taste, nor touch.” (Col. 2:20-22)
Although it is true that Paul himself fasted on occasion while praying, Jehovah expects his servants to serve him cheerfully and enjoy food.
(Eccl. 3:12,13; Acts 13:1-3; Acts 14:23; 1 Tim 1:11)
Furthermore, fasting itself does not help us combat other carnal desires.
And the Bible makes it clear that we cannot make up for our shortcomings through fasting. (Is. 58:3-7)
Whether a Christian chooses to fast or not is an entirely personal, private matter. (Matt. 6:16-18)