Ahh, yes, and that's a good point. Perhaps, however, this is why people get hung up on fasting. It's true that fasting is used by many to lose weight. Fasting is also used by many to normalize BG levels, reduce insulin resistance, eliminate damaged cells and amino acids through autophagy, to reset the body at a cellular and metabolic level making the body more sensitive to its chemical and nutritional environment, to get better and more balanced energy levels and mental clarity, and perhaps to enhance life span. Many start experimenting with fasting for weight loss purposes and find the other benefits valuable enough to continue IF on a regular basis. Possibly similar to why some decide to continue LCHF, as the beneficial dynamics of improved health exceed simple weight loss. There are several reasons to continue these practices beyond the point where one no longer needs to lose weight.

The serious side of IF, however, is that certain health conditions require some to work closely with a physician experienced with fasting to start a safe fasting protocol. Not to be taken lightly as another DIY project in those circumstances!