Let's move on to people who've been trying for years and years to lose weight. They're very disciplined, they work really hard at it. But somehow, the loss of weight is just not sustainable for them. Question eight covers this. Why am I struggling to lose weight, even though I eat very little. So we've seen how a gradual increase in food intake will make us fatter.

We've also seen how too many carbs, plus eating too often impacts on our insulin. And this prevents us from losing weight by causing insulin resistance. And we also understand how our hormones impact on how our body actually uses the fat. But if eating more makes us gain weight, why is it that when we reduce our calories, the weight loss just come out is not sustainable? We may lose A little bit of weight, but in a very short while it platters out, and we have problems that losing more weight. Again, it's all the fault of our hormones.

But this time the human causing all of the trouble is a hormone called leptin with a little bit of help from cortisol and adrenaline. selection is also a homerun messenger. Well, insulin is the messenger that tells the cells to accept glucose. leptin is the hormone that tells the brain what's happening in the body with regard to our energy levels of food status, and whether or not starvation is imminent. It's a very important hormone for survival. Because leptin is a master hormone, and it directs adjustments to your metabolic rate to the increase or decrease the metabolic rate.

It affects whether or not the perception is that the body is starving. It's going to adjust your metabolic rate accordingly. So we've all heard people say, I have a slow metabolism, or we've heard that person is so slim. Clearly they have a fast metabolism. Well, this is due to how balanced or effective the Lipton in the body is responding. So let him give the brain inflammation.

And that affects organs such as our thyroid, whose role it is to manage our metabolic rate. Lipson also manages messages like, okay, you're full now, you can stop eating. So if you're one of those people who only feel satisfied after a really large meal, with you get hungry an hour soon after eating, it is leptin that can causes the causes of this particular response. Now Neptune is actually made by our fat cells. So although leptin impacts on our body Brain, it's our fat cells that produce the quantity of leptin that is required for balance. So where the pancreas makes insulin affect itself makes leptin.

So how does the body know what to do? Remember right at the beginning, I told you that insulin instructs the body where to store the energy that's coming in, it stores it either in the liver, or in the muscles, or some of it goes to fat. Now this slight increase in the fat impact on our lips and production, which in turn dashes off to the brain to say it's okay. foods in you can instruct the pancreas to shut down insulin production and it registers that the body is full. So the increase in leptin tells the brain everything's fine. There's no starvation, and the brain can then instruct thyroid to step up the metabolic rate