why do you feel hungry after you've just finished eating?
546622
easy it takes 10 min for you body to know your full
676873
I think it is because you body is not functioning at its best when someone is tired.  So what happens is the person's resistance drops and his ability to warm up.  \nHave you ever noticed that after eating you get cold?  It's because your body is working harder to digest the food and the other bodily functions slow down.  That's also why we feel tired after over-eating.
963831
Why we need a siesta after dinner\n15:42 05 June 2006 \nNewScientist.com news service \nLinda Geddes\n\nThe mystery of why we often feel sleepy after eating a big meal may finally have been resolved. Researchers have discovered that high blood glucose levels, similar to those after eating a big meal, can switch off the brain cells that normally keep us awake and alert. \n\nThe findings make evolutionary sense since sleepiness could be the body’s way of telling us to relax and conserve energy once we have found and eaten our food, says Denis Burdakov of the University of Manchester, UK, who led the research.\n\n“It has been known for a while that people and animals can become sleepy and less active after a meal, but the brain signals responsible for this were poorly understood,” he says. \n\nBurdakov’s team studied a group of brain cells called orexin neurons, which are found in the hypothalamus and produce proteins called orexins that are essential for maintaining normal wakefulness in humans. These neurons are less active at night and when they malfunction this can lead to narcolepsy, where sufferers cannot stay awake.\n\nFiring rate\nPreviously, researchers have shown that orexin neurons can be inhibited by glucose, but it was not known how sensitive they were. Burdakov’s team exposed orexin neurons to subtle changes in glucose levels similar to those that occur in the blood during daily cycles of eating and hunger, then measured their firing rate. \n\n“What we discovered is the activity of the neurons can be turned off by minute elevations in glucose associated with normal meals,” says Burdakov. The glucose is thought to act on potassium ion channels in the neurons’ membrane. \n\nHe believes this could explain why we naturally feel sleepy after a meal and also why it can be difficult to sleep when we are hungry, since the activity of the neurons would be higher when there is less glucose in the blood.\n\n“We think orexin neurons make sure that we are awake and alert when hungry, in order to ensure optimal food-seeking,” Burdakov says. He adds that it makes evolutionary sense for animals to turn off their wakefulness and conserve energy once they have eaten their food, since it could be risky or wasteful to expend too much energy looking for more food.\n\nObesity trigger\nChanges in the sensitivity of orexin neurons to glucose could lead to obesity, Burdakov speculates. \n\nOrexin neurons are known to help regulate appetite and metabolic rate, and when they become faulty this can trigger late-onset obesity. Researchers are currently trying to understand exactly how orexin neurons interact with other brain circuits involved in appetite regulation.\n\n“The role of orexin neurons in the control of numerous central nervous system processes makes the discovery of their ability to sense small changes in glucose potentially quite important,” says Joel Elmquist at the University of Texas Southwestern Medical Center in Dallas, US, writing in a commentary accompanying the paper in Neuron. \n\nThis is because it means a whole range of physiological processes can be regulated by the amount of fuel that is available. “Dysfunction of glucosensing may have profound effects on wakefulness and coordinated autonomic responses,” he says.\n\nJournal reference: Neuron (vol 50, p 711)
490450
when i was 15 i had anorexia.  you eventually dont realize that you need to eat.  i wont say you lose the hunger feeling because it is replaced by other pains, but you just forget.
384240
You should eat something after you exercise. A piece of fruit would be good.  You should never be hungry.  If you are always hungry, take a look at what you are eating.  Try to spread out the calories differently or try eating different foods so that you don't get hungry.
664105
Researchers now believe the culprit may be carbohydrates.  More specifically, certain types of carbohydrates, including rice and pasta.  These carbohydrates have a high glycemic index (GI), which means the body needs to produce extra insulin to digest them.  Excess insulin causes the blood sugar to plummet, creating a hungry feeling.
708276
That is an urban myth and not true. If anything overeating causes the body to pull from other resources in the body to handle the overload so that may be why one feels tired after eating a huge amount.\n\nThere is not enough tryptophan to trigger the amount of serotonin needed for that effect.
1130990
Also note that after you eat, you generally feel cold because most of your body's blood is diverted to your stomach to aid in digestion.
284144
Hello, you are most probably overloading yourself during your meal. you should eat slowly; it takes approximately 10 minutes for your brain to register the amount of food that you have eaten and feel satiety; this feeling of heaviness that you are describing is called heartburn and it's because your stomach is full very quickly and there is not much time for it to ''stretch'' enough and start the digestion process. the other thing that i am thinking is that you probably do not eat at regular times and you eat once a day while the rest of the day you don't eat anything. if you do that, it's very bad for your digestive system and you need to have snacks in between meals. it's not because of the carbs though. (you said it already for yourself...'a lot of pasta'...it's not the type, it's the quantity).Best of luck.
438421
Your body is naturally hungry after working out. Eat something light and healthy...juicy fruits, a piece of dry toast,a small handful of crackers etc. \nDrink lots of water!\n\nAlso always make sure if you are trying to lose weight that you are eating healthy. Not just right after you work out but all day every day.
353469
Could be a lot of things.  They say it takes the stomach 20 minutes to realize it's full and tell the brain "okay stop eating"  so try making each meal last at least 20 minutes (eat slower)\n\nYou could be eating a lot of sugars or carbs that burn a lot faster then proteins so you feel hungry more often.\n\nStrange thing about the stomach.  It's like a balloon.  The more you eat the more stretched out it becomes.  The less you eat the smaller it becomes and then it doesn't take as much food to fill it.  The Gastric Bypass surgery works on this principal.
400666
1. activity varies day to day, increased activity needs more energy and your brain tell you to eat more\n2. on contrary, when you have nothing to do, it's easy to get your attention of food, especially if there is easy and tasty one nearby\n3. you don't eat the same thing everyday don't you? what you eat before affect your hunger. food that hard to digest stay longer in your stomach and make you feel full for longer time. it's not just calories or grams that counts
877249
Your blood sugar could be fluctuating. That can give you a feeling of nausea. \n\nI once ate a 2 course meal yet 30 mins later my blood sugar was still dangerously low. Does make you feel pretty unwell I agree. Get it checked out would be my advice.
675354
your body is busy fighting and is rejecting things that weaken it so you are not in a hungry mood. It will accept nourishment and you need to force some things to keep strong.\n\nGood luck and God Bless!!
744902
I doubt it, but there is cause for me to be concerned.  Something is making you less hungry, and it could likely be depression.  I would go see your doctor just to be on the safe side.  Also he can rule out any other medical issues that might be causing this.
1089247
When you eat simple carbohydrates such as the sweets you described you have a sudden elevation of your blood glucose or blood sugar level and you will feel really good.  Have you ever heard of a sugar buzz?  That's what they are referring to.  You may not always have this feeling but if you do, the problem is that it does not last long, because the body responds by the pancreas producing  a lot of insulin to stabilize the high sugar level.  This is a normal reaction by the body to maintain homeostasis or normalcy.  The problem the the sudden drop of blood sugar, you have feelings of sleepiness and being very tired.  \nThis is a normal body function.  But sometimes with diabetics this process is over exaggerated or doesn't work at all. So it you haven't done so already you probably should have a fasting blood glucose level to make sure everything is ok.  Talk to your doctor about it.  But what you are describing  sounds like your body  doing its job.  It's just always good to check things out.
588015
When you get a feeling in your gut like your hungry, you get tense, you miss them