Ever wonder why it’s so hard to avoid those extra
bites that pad our waistlines?
Or why it is so easy to overeat even when we
know it’s bad for us?
Shouldn’t our bodies be telling us to stop?
just not right away.
Grehlin is a hormone produced by specialized cells in the stomach and the pancreas which regulates hunger and food intake. When the stomach is empty, ghrelin is secreted, resulting in appetite, hunger and increased food intake. When the stomach is full and the lining is stretched, for example after a meal, ghrelin release is stopped. Grhelin levels rise before meals and fall after eating.
Feeling hungry is the result of a hormone called ghrelin. That familiar rumble in your stomach is your body’s way of letting you know you haven’t eaten in a while, and it’s time to refuel. Ghrelin turns your body’s satiety switch from on to off – it’s the biological equivalent of the gas light coming on in your car.
Also known as pancreatic peptide YY, this hormone is released by cells in the small intestine (ileum) and the colon in response to eating. Receptors in the brain bind to peptide YY circulating in the blood, resulting in decreased appetite, fullness and satiety . Peptide YY also slows down the rate at which food moves through the gastrointestinal tract.
As you eat, ghrelin levels go down – but your body’s satiety switch is still off. Your stomach is slowly filling up, but you don’t feel full just yet. In fact, you won’t feel full for another 20 minutes, because there’s another hormone whose job it is to turn your satiety switch back on – peptide yy. It takes about 20 minutes for the food you’ve just eaten to travel from your stomach to your colon, where peptide yy is released. Only then does your brain receive the signal that it’s time to stop eating.
Training our bodies to recognize this 20-minute trap in a world of food abundance and super-sized portions is difficult. It is hard to say no! Even when you know you should. We live busy, distracted, stressful lives and it’s easy to miss our body’s subtle cues to stop eating.
Continuing to snack or eat more of your meal during the 20-minute Overeating Zone may seem insignificant, but those extra calories add up(1)! The average person consumes more than 1,000 unnecessary calories every day(2). Cutting 500 calories from your daily diet can result in losing one pound per week(3)(4).