Dr. Matthew Walker

And if you look at the curve, the decline in sleep over the past really 70 years, for which we have good data, and if you look, for example, at the rise in obesity over the same duration of time, those two things go in opposite directions. As sleeping is coming down, obesity is going up. And we know that a lack of sleep changes your appetite hormones.

And if you look at the curve, the decline in sleep over the past really 70 years, for which we have good data, and if you look, for example, at the rise in obesity over the same duration of time, those two things go in opposite directions. As sleeping is coming down, obesity is going up. And we know that a lack of sleep changes your appetite hormones.

It changes your ability to dispose of food and specifically regulate your blood sugar. So you are more obesogenic in terms of your profile of weight gain.

It changes your ability to dispose of food and specifically regulate your blood sugar. So you are more obesogenic in terms of your profile of weight gain.

It changes your ability to dispose of food and specifically regulate your blood sugar. So you are more obesogenic in terms of your profile of weight gain.

Yeah. That's all you want. And that's exactly, it's not just that you eat more, which you do. It's what you eat. That's the problem. You go after the heavy hitting stodgy carbohydrates, simple sugars, and you shy away from the, the sort of, you know, the leafy greens, the nuts and the good proteins, because you are just on a junk food binge. Well, you want to get energy and you want it quick. Yeah.

Yeah. That's all you want. And that's exactly, it's not just that you eat more, which you do. It's what you eat. That's the problem. You go after the heavy hitting stodgy carbohydrates, simple sugars, and you shy away from the, the sort of, you know, the leafy greens, the nuts and the good proteins, because you are just on a junk food binge. Well, you want to get energy and you want it quick. Yeah.

Yeah. That's all you want. And that's exactly, it's not just that you eat more, which you do. It's what you eat. That's the problem. You go after the heavy hitting stodgy carbohydrates, simple sugars, and you shy away from the, the sort of, you know, the leafy greens, the nuts and the good proteins, because you are just on a junk food binge. Well, you want to get energy and you want it quick. Yeah.

Yeah.

Yeah.

Yeah.

That's right, and you can see that same replication of failure across multiple organ systems. So for example, I take a young, healthy set of males, I limit them to let's say four or five hours of sleep for five nights, they will have a level of testosterone, which is that of someone 10 years their senior. So I can age a healthy young man by 10 years by short sleeping them for a week.

That's right, and you can see that same replication of failure across multiple organ systems. So for example, I take a young, healthy set of males, I limit them to let's say four or five hours of sleep for five nights, they will have a level of testosterone, which is that of someone 10 years their senior. So I can age a healthy young man by 10 years by short sleeping them for a week.

That's right, and you can see that same replication of failure across multiple organ systems. So for example, I take a young, healthy set of males, I limit them to let's say four or five hours of sleep for five nights, they will have a level of testosterone, which is that of someone 10 years their senior. So I can age a healthy young man by 10 years by short sleeping them for a week.

You can take people who have perfectly regulated blood sugar, no problems with their blood glucose whatsoever, Put them on that same regimen of four or five nights of short sleep. And at the end of it, someone like you would look at their blood work and you would say, you are bordering on being pre-diabetic right now. Again, that's within the space of days. Days, yeah.

You can take people who have perfectly regulated blood sugar, no problems with their blood glucose whatsoever, Put them on that same regimen of four or five nights of short sleep. And at the end of it, someone like you would look at their blood work and you would say, you are bordering on being pre-diabetic right now. Again, that's within the space of days. Days, yeah.

You can take people who have perfectly regulated blood sugar, no problems with their blood glucose whatsoever, Put them on that same regimen of four or five nights of short sleep. And at the end of it, someone like you would look at their blood work and you would say, you are bordering on being pre-diabetic right now. Again, that's within the space of days. Days, yeah.

So I think it's, again, a demonstration to us that sleep, we don't have any real wiggle room.

So I think it's, again, a demonstration to us that sleep, we don't have any real wiggle room.

So I think it's, again, a demonstration to us that sleep, we don't have any real wiggle room.