What do we know about so-called "intermittent fasting"?

Specifically, intermittent fasting is a broad term that encompasses a variety of programs that manipulate the timing of meals, using fasting in order to improve overall health through weight loss.

What do we know about so-called "intermittent fasting"?
Intermittent fasting: What do we know about it? Image by Sanjoy Sadhukhan from Pixabay