Dr. Stacy Sims
π€ SpeakerAppearances Over Time
Podcast Appearances
So we're talking about jet lag. For women going east, it's a little bit easier because it's shorter. For women going west, it's a little bit harder because it's longer. So there's a difference. Men will do better going west and worse going east. Women go better east than going west.
So we're talking about jet lag. For women going east, it's a little bit easier because it's shorter. For women going west, it's a little bit harder because it's longer. So there's a difference. Men will do better going west and worse going east. Women go better east than going west.
Yeah, so this comes down to our hormone and metabolism. pulses throughout the day. So we see that cortisol, which everyone talks about, as being a bad thing. It's not a bad thing. We have a peak about a half an hour after we wake up. And for women, we need to eat in order to dampen that peak. For men, it just naturally dampens. So you don't need the food to instigate dampening of that peak.
Yeah, so this comes down to our hormone and metabolism. pulses throughout the day. So we see that cortisol, which everyone talks about, as being a bad thing. It's not a bad thing. We have a peak about a half an hour after we wake up. And for women, we need to eat in order to dampen that peak. For men, it just naturally dampens. So you don't need the food to instigate dampening of that peak.
We see a luteinizing hormone pulse in both men and women, but the amplitude of that pulse is greater in women because it's responsible for how our body responds to developing an egg so that it can be fertilized. We also see estrogen pulses again to pulse throughout the day and then throughout the week before we can come to one of those estrogen peaks.
We see a luteinizing hormone pulse in both men and women, but the amplitude of that pulse is greater in women because it's responsible for how our body responds to developing an egg so that it can be fertilized. We also see estrogen pulses again to pulse throughout the day and then throughout the week before we can come to one of those estrogen peaks.
So our body is a line for these pulses, and we have a 24-ish hour clock. And within that, we have cellular clocks. So we have a cellular clock that's telling us to pulse luteinizing hormone every so often. We have an internal cellular clock that's telling us estrogen to pulse every so often.
So our body is a line for these pulses, and we have a 24-ish hour clock. And within that, we have cellular clocks. So we have a cellular clock that's telling us to pulse luteinizing hormone every so often. We have an internal cellular clock that's telling us estrogen to pulse every so often.
And we can change that through differences in sleep, change that through our light wake time and through food intake.
And we can change that through differences in sleep, change that through our light wake time and through food intake.
It's pretty important if we're looking about how our clock is aligned and how we are repairing while we're sleeping. Because if we're eating late and we've shifted everything late because people eat late, they go to bed, they wake up, they're not hungry, they don't dampen that cortisol peak for women.
It's pretty important if we're looking about how our clock is aligned and how we are repairing while we're sleeping. Because if we're eating late and we've shifted everything late because people eat late, they go to bed, they wake up, they're not hungry, they don't dampen that cortisol peak for women.
And then they don't sleep very well because if you are eating right before bed, your body is using parasympathetic response to digest instead of invoke really good sleep. So we see a lot of this circadian misalignment that's occurring. We see it a lot in shift workers. We see it a lot in our global society of staying up late and working and having screens.
And then they don't sleep very well because if you are eating right before bed, your body is using parasympathetic response to digest instead of invoke really good sleep. So we see a lot of this circadian misalignment that's occurring. We see it a lot in shift workers. We see it a lot in our global society of staying up late and working and having screens.
And the impact on metabolism is that it changes appetite hormones for women, where it will increase the craving for carbohydrates and the desire to eat more. And they don't ever feel full. For men, it's just a craving aspect. And so they'll eat according to cravings. It's called hedonistic eating rather than a true change in appetite hormones.
And the impact on metabolism is that it changes appetite hormones for women, where it will increase the craving for carbohydrates and the desire to eat more. And they don't ever feel full. For men, it's just a craving aspect. And so they'll eat according to cravings. It's called hedonistic eating rather than a true change in appetite hormones.
So people who are having difficulty sleeping and difficulty changing body composition for overall health, we shift it. We're like, okay, we want to shift to be able to eat during the day and to have regular food at regular intervals so that our body has fuel to do what it needs during the day. We stop eating regularly.
So people who are having difficulty sleeping and difficulty changing body composition for overall health, we shift it. We're like, okay, we want to shift to be able to eat during the day and to have regular food at regular intervals so that our body has fuel to do what it needs during the day. We stop eating regularly.
at dinner time, which is around six or seven, have a good two to three hours before we go to bed so that when we do go to bed, all our parasympathetic responses can go into getting really good sleep architecture. So that means that we get really good phases of sleep for optimal physical mental recovery. Because if we have that, then we have better blood glucose control.
at dinner time, which is around six or seven, have a good two to three hours before we go to bed so that when we do go to bed, all our parasympathetic responses can go into getting really good sleep architecture. So that means that we get really good phases of sleep for optimal physical mental recovery. Because if we have that, then we have better blood glucose control.