This is a YouTube video titled "3 things that happen if you fast too much." The content features a single speaker discussing the physiological effects of excessive fasting, particularly focusing on increased cortisol levels and its impact on sleep quality, hormonal cycles in women, and hair thinning in both men and women. The video was created in March 2025.
One of the warnings that I've had about fasting, enough of a warning that I wrote a second book on fasting to talk about this, is that you can increase cortisol if you fast too much. And if you fast too much, that increase in cortisol hits women before it hits men. And the order of operations is, number one, your sleep quality goes down, so you wake up more at night, you don't get as much deep sleep. Something's not right. Number two is you start waking up without a morning kickstand. Or. Or if you're a woman, your cycle starts to become irregular. If you have a cycle. And then the third thing that happens is hair thinning in both men and women, and that was driven by cortisol. But there may be other effects.
