Wednesday, September 23, 2009

Why we fall asleep after eating

My question was why do I fall asleep after eating?

After reading all the previous articles, it seems the question should by why do we stay awake?

Biologically it seems we stay awake to eat and do the other activities that are needed to allow us to procreate and raise the next
generation to pass on our genes.

When we are hungry, a cell in our brain releases a chemical orexins (plus who knows what else) that keeps us alert so we can get
food.

Sugar blocks those cells from producing orexins. Apparently without the chemical to keep us awake, we get sleepy.

Avoid sugar and stay hungry if you want to stay alert.

50 Ways to Boost Your Brain

50 ways to exercise your brain.

http://www.aarp.org/health/healthyliving/brain_health/articles/noodle_boosters.html

Sugar can be addictive, scientist says

"We have the first set of comprehensive studies showing the strong suggestion of sugar addiction in rats and a mechanism that might
underlie it," Hoebel said.
http://www.physorg.com/news148116045.html

Amino acids that come from the protein you eat are the building blocks of your brain's network.

Most neurotransmitters are made from amino acids obtained from the protein in food you consume. Neurotransmitters are the brain
chemicals that motivate or sedate, focus or frustrate. Their complex interaction is what shifts your mood and changes your mind.
Neurotransmitters wag the tail of tadpoles and wage the tale of humanity.

http://www.fi.edu/learn/brain/proteins.html

My now-becoming-regular-flu-reading-ideas

From: Mercedes
Sent: Saturday, September 19, 2009 1:48 PM

Long time no see. Hope you're doing well.

This morning I decided I'd expand my circle of contacts and pass on to you some of the links I have found interesting or somehow
useful regarding the new H1N1 flu.

Some of you probably already have plenty of information about the flu from the media and your own institutions, and some already
know of this flutrackers.com website, which is visited and contributed to by medical personnel around the globe. So, this might not
be much of a contribution to your tools and knowledge.

Anyhow, today's site has contributions form infection control staff in medical facilities, which to me is a indicator of the way in
which CDC/Gov/medical institutions are handling the pandemic and consequently, us the public. But also thought it might be useful
to you as a resource on specifics related to you or your family or work place. If you are new to flutrackers.com, note that
"Florida1" is the username of the administrator. I kind of follow his/her lead as he or she seems to be pretty sensible,
non-sensationalist and strikes me as very knowledgeable.

Two of the most informative threads to me this AM were:

http://www.flutrackers.com/forum/showthread.php?t=120892 Emergency symptoms.
http://www.flutrackers.com/forum/showthread.php?t=120753 On incubation periods

Or this one, the main NEW POSTINGS site on several topics/up dated (medically related) info re H1N1.
http://www.flutrackers.com/forum/forumdisplay.php?f=1531

Two other interesting threads were on the effect of vitamin D and one on asthma. Seems vitamin D might help mitigate symptoms. Let
me know if you come across confirmation of these ideas from legitimate sources.

Reading the emergency thread it occurred to me that many of us have probably never discussed our medical preferences in case of
emergency. I've been thinking about this a lot, considering my medical care preferences in case of severe illness. Yup, some of
which may require immediate use of extraordinary measures (like very invasive procedures) from resuscitation, to intubation for
breathing and cardiac support, to extra corporeal oxygenation of the blood (like a form of dialysis discussed in the new postings of
flutrackers) that help the lungs and heart while they recover. Recovery from these procedures is lengthy, the shortest being a few
weeks but too often lasting months and sometimes years. Sometimes there is not recovery. What decisions would you consider making?
What would you like done or not done to you? What if you had to decide on DISconnecting a loved one from a support system like
this? Just some food for thought.

I was enlightened this week by a YouTube on how to wash hands properly. However, the overwhelming majority of the demos are
incorrect. This one was the best I found. http://www.youtube.com/watch?v=vYwypSLiaTU because of how it illustrates the finger
rubbing techniques, the duration and how to turn off the faucets. Just remember to touch nothing else in the bathroom with your
bare hands before you leave the sink/bathroom to go to your next task; otherwise you just nicely recontaminated your hands. In
public places I use a foot, or a clean paper towel to turn the knob or hold the handle and push the door open with the paper,
disposing of the towel outside the bathroom if necessary, making sure not to handle it any further before I get rid of it. At home
I clean door knobs regularly.

And just for kicks, this is one is on IMPROPER hand washing by a nurse instructor who thinks she is doing it correctly
http://www.youtube.com/watch?v=SG1uui3hslA&NR=1&feature=fvwp. Do not wash like this.

Happy reading, and stay well. As always, let me know if you want NOT to receive this kind of emails. My purpose is only to keep me
informed about the flu, understand what I can, and stay healthy for as long as I can. In the process, I've thought of people who
might find this kind of stuff useful in some way, and is why you just got this note.

Orexins and Sugar - Sleep after lunch

A cell in the brain releases orexins that keeps people alert.

Sugar can block these cells from producing orexin.
http://news.bbc.co.uk/2/hi/health/5037720.stm

Norepinephrine warns brain is out of fuel

Norepinephrine was previously known to operate as a stress hormone as well as a neurotransmitter that plays a role in mood
regulation and other physical processes. New research shows it is also the final chemical step in warning the brain that it's out of
gas.
http://www.msnbc.msn.com/id/19699485/

Milk and honey promote sleep

Milk and honey promote sleep. Milk contains tryptophan, an essential amino acid that is among the natural dietary sleep inducers.
Tryptophan works by increasing the amount of serotonin, a natural sedative, in the brain. This is why so many folk remedies include
warm milk with a teaspoonful of honey, a simple sugar. (Carbohydrates facilitate the entry of tryptophan into the brain.) A turkey
sandwich provides another sleep-inducing combination of tryptophan and carbohydrates. A banana with milk gives you vitamin B6, which
helps convert tryptophan to serotonin.
http://www.rd.com/living-healthy/sleep-and-diet-eating-to-sleep-well/article29172.html

Sugar-sensitive people generally have a family history of alcoholism and are very fond of sweet foods and carbohydrates.

People with normal body chemistries experience the opiate effect of eating sugars as simply a pleasant feeling. For sugar-sensitive
people, this pleasant feeling can become a drug-like euphoria, which is powerful enough to create a strong attachment to the food or
drink producing the effect. Research into neurochemistry suggests the reason may be that the sugar-sensitive personality appears to
have a dysfunction in two separate, but connected, biological systems that affect emotions and behavior. These dysfunctions include
a lowered level of serotonin functioning and an augmented response to beta-endorphin within the reward systems of the brain
(Gianoulakis, Krishnan, and Thavundayil, 1996). The consequences of these separate disturbances are both physiological and
psychological.
http://web.winltd.com/Article.aspx?PageURL=/Pages/English/healthnews/sugarconnection.htm

What to eat at each meal to keep memory and brain functioning

Many people realize the harm the alcohol can do to our brain, but only a few know the danger of a lunch that consists of three or
more dishes containing carbohydrates: bread, potatoes or pasta, sweet desserts. A group of psychologists discovered that similar
combinations of products make women sleepy and men weak. After such a lunch, it takes about four hours to fully restore persons'
ability to concentrate. You've probably heard the joke: "Up until lunch, a person at work fights hunger and after lunch, sleep."
Sleepiness may not be the result of a bad night of sleep. Sleepiness is often caused by an incorrectly chosen combination of food
that reduces the activity of the brain.

What should you eat for lunch then? Lunch should contain products with a high amount of protein. Poultry or fish rich in protein
fill the blood of a person with amino acids, including tyrosine.

Let me also share a few words about the protective barrier of nervous cells of the brain. Each cell of the organism has an external
membrane - a protective cover which not only separates the cell from other parts of the organism, but also serves as the transmitter
of various substances. Through the membrane, the active withdrawal of harmful by-products of vital cellular activity is carried out.
Many cells of the brain possess a double membrane; not every chemical substance can penetrate into the nervous system. Physicians,
who are well-informed about these processes, invented a special way for the introduction of medicinal substances directly into the
nervous system - the subarachnoid way. Some substances enter into the brain only by means of their direct injection into nervous
cells. What is it that prevents those substances from reaching the nervous system? It is the double protective membrane that does
it. The mechanism that protects the brain from chemical substances is called a "blood-brain barrier."

Tyrosine easily flows through this protective filter in the brain and turns into chemical elements which help to increase brain
activity - dopamine and norepinephrine.

When you suddenly feel confused, helpless, or depressed, it should serve as an indicator of deficiency of these elements in your
brain.

Meat, fish, an egg yolk, porridge, peanuts, and soy products contain a nutritious element called choline, which also freely
penetrates through the blood-brain barrier. Choline is the chemical predecessor of the neurotransmitter of the brain, acetylcholine,
which plays an important role in the development of memory.
http://www.pmemory.com/articles/food_to_improve_memory.php

Sleeps Role In Forming Memories

Sort transient brain events, called "sharp wave ripples," are responsible for consolidating memory and transferring the learned
information from the hippocampus to the neocortex, where long-term memories are stored.

Sharp wave ripples are intense, compressed oscillations that occur in the hippocampus when the hippocampus is working "off-line,"
most often during stage four sleep, which, along with stage three, is the deepest level of sleep.

During stage four sleep, Buzsaki explains, "it's as if many instruments and members of the orchestra come together to generate a
loud sound, a sound so loud that it is heard by wide areas of the neocortex. These sharp, 'loud' transient events occur hundreds to
thousands of times during sleep and 'teach' the neocortex to form a long-term form of the memory, a process referred to as memory
consolidation." The intensity and multiple occurrence of those ripples also explain why certain events may only take place once in
the waking state and yet can be remembered for a lifetime, adds Buzsaki.

http://www.impactlab.com/2009/09/16/direct-evidence-of-role-of-sleep-in-memory-formation-is-uncovered/

Foods That Feed Your Brain

Eating more of these foods -- you are certain to remember so much more. Scientists are discovering new ways food and supplements
affect your brain. Here's the latest research on nutritional ways to boost memory, mood and kids' IQ scores and to protect against
mental decline as you get older.

http://platinumlotus.com/brain.html

Your Brain Signals Your Body's Need for Food Via Chemicals

When the body needs nourishment, neurotransmitters are released. One neurotransmitter called Neuropeptide Y (NPY) is important in
sending messages to various parts of the brain.

Scientists have recently identified two chemicals - ghrelin and leptin - circulating in the blood that communicate with NPY.
http://www.dummies.com/how-to/content/how-your-brain-signals-your-bodys-need-for-food.html

Orexin affects feeding, arousal, sleep, drug addiction

New research performed in rats suggests that orexin, a brain chemical involved in feeding behavior, arousal, and sleep, also plays a
role in reward function and drug-seeking behavior.

Dr. Glenda Harris and her colleagues at the University of Pennsylvania showed that the activation of orexin-secreting brain cells in
the hypothalamus, a brain region that controls many vital functions such as eating, body temperature, fat metabolism, etc. is
strongly correlated with food- and drug-seeking behaviors. Past anatomical studies have shown that these cells in the lateral
hypothalamus also project to adjacent reward-associated areas of the brain.

This study suggests that orexin may be a factor in modulating reward-seeking characteristic of substance abuse. The findings help
to better identify neural pathways involved in drug abuse, craving and relapse, which may ultimately help scientists find more
effective therapies.
http://www.drugabuse.gov/newsroom/05/NR8-25.html

Sleep is regulated by the activity of histamine cells

''Sleeping Dogs, And Why'' Brain activity in narcoleptic dogs has helped solve some of the mysteries of sleep and waking. Brain
chemicals thought to have the same role appear instead to preside over different aspects of sleep. AWAKE -- Brain cells that produce
histamine and norepinephrine are active during waking. PARTLY ASLEEP -- In cataplexy, a semisleep state in which muscle tone is lost
but arousal maintained, histamine levels are normal; norepinephrine is reduced. SLEEPING -- Both histamine and norepinephrine are
silent. Histamine regulates arousal, while norepinephrine appears to control muscle tone.
http://www.nytimes.com/2004/06/15/health/teasing-apart-chemicals-scientists-unlock-one-more-of-sleep-s-secrets.html

Sugar addiction

For those individuals with an inclination for sweets, there is bad news: According to numerous researchers and scientific studies, a
sugar addiction can be just as strong as a drug or alcohol dependency.
http://byihypnosis.com/programs/addictions/sugar/index.html

ghrelin in the regulation of human eating and sleep

Our findings suggest that the role of ghrelin in the regulation of human eating is more complex than suspected so far. In addition
to stimulation of appetite, cognitive functions appear to be involved. Exogenous ghrelin appears to be capable in promoting appetite
independently from acute action on leptin.Interestingly in one female patient with night eating syndrome nocturnal ghrelin levels
were distinctly higher than in healthy women.
http://www.mpipsykl.mpg.de/en/research/themes/sleep/steiger_03/index.html

Diabetes, the Brain, and Cognition

Scientists once thought the brain played little part in diabetes-a disease in which the body is unable to produce or use the hormone
insulin from the pancreas. Now, new research indicates that the brain has its own insulin receptors and plays a big role in normal
blood sugar control. Scientists are only beginning to understand the details of the brain's role in normal insulin and glucose
control, diabetes, and the cognitive deficits associated with the disease. Better treatments for people with diabetes are sure to
follow.

Food addiction

"Food might be the substance in a substance-abuse disorder that we see today as obesity," says Mark Gold, MD, chief of addiction
medicine at the University of Florida College of Medicine. "If you ask some of the questions that are used to diagnose drug
abuse-for instance, 'Do you continue to use the substance despite its negative effects?' or 'Do you have a preference for more
refined substances?'-and then replace substance with food, it's not all that difficult to imagine that food addictions exist."

http://health.yahoo.com/weightloss-overview/are-you-addicted-to-food/prevention--23233.html

Food Cravings

Our stomach hunger cycle begins with a hormone called ghrelin. When our bodies have burned up the food in our stomachs and our blood
sugar and insulin levels begin to drop, ghrelin communicates with the hypothalamus in the brain. The hypothalamus, housed in the
deep center portion of our brain cavity, regulates our basic body functions such as thirst, sleep and sex drive. Once it receives
the message, delivered by ghrelin, that we need to eat something to keep our bodies running, the hypothalamus triggers the release
of neuropeptide Y, which stimulates our appetites.

http://health.howstuffworks.com/food-craving.htm/printable

A banana a day keeps the doctor away

Got this email today about the health benefits of bananas, which I eat regularly. Have no idea if it is true.

----------
Go Bananas
----------
Never, put your banana in the refrigerator. [Why?]

This is interesting.
After reading this, you'll never look at a banana in the same way again..

Bananas contain three natural sugars - sucrose, fructose and glucose combined with fiber. A banana gives an instant, sustained and
substantial boost of energy.

Research has proven that just two bananas provide enough energy for a strenuous 90-minute workout. No wonder the banana is the
number one fruit with the world's leading athletes.

But energy isn't the only way a banana can help us keep fit. It can also help overcome or prevent a substantial number of illnesses
and conditions, making it a must to add to our daily diet.

Depression: According to a recent survey undertaken by MIND amongst people suffering from depression, many felt much better after
eating a banana. This is because bananas contain tryptophan, a type of protein that the body converts into serotonin, known to make
you relax, improve your mood and generally make you feel happier.

PMS: Forget the pills - eat a banana. The vitamin B6 it contains regulates blood glucose levels, which can affect your mood.

Anemia : High in iron, bananas can stimulate the production of hemoglobin in the blood and so helps in cases of anemia.

Blood Pressure: This unique tropical fruit is extremely high in potassium yet low in salt, making it perfect to beat blood pressure.
So much so, the US Food and Drug Administration has just allowed the banana industry to make official claims for the fruit's ability
to reduce the risk of blood pressure and stroke.

Brain Power: 200 students at a Twickenham (Middlesex) school ( England ) were helped through their exams this year by eating bananas
at breakfast, break, and lunch in a bid to boost their brain power. Research has shown that the potassium-packed fruit can assist
learning by making pupils more alert.

Constipation: High in fiber, including bananas in the diet can help restore normal bowel action, helping to overcome the problem
without resorting to laxatives.

Hangovers: One of the quickest ways of curing a hangover is to make a banana milkshake, sweetened with honey. The banana calms the
stomach and, with the help of the honey, builds up depleted blood sugar levels, while the milk soothes and re-hydrates your system.
Heartburn: Bananas have a natural antacid effect in the body, so if you suffer from heartburn, try eating a banana for soothing
relief.

Morning Sickness: Snacking on bananas between meals helps to keep blood sugar levels up and avoid morning sickness

Mosquito bites: Before reaching for the insect bite cream, try rubbing the affected area with the inside of a banana skin. Many
people find it amazingly successful at reducing swelling and irritation.

Nerves: Bananas are high in B vitamins that help calm the nervous system.


Overweight and at work? Studies at the Institute of Psychology in Austria found pressure at work leads to gorging on comfort food
like chocolate and chips... Looking at 5,000 hospital patients, researchers found the most obese were more likely to be in
high-pressure jobs. The report concluded that, to avoid panic-induced food cravings, we need to control our blood sugar levels by
snacking on high carbohydrate foods every two hours to keep levels steady..

Ulcers: The banana is used as the dietary food against intestinal disorders because of its soft texture and smoothness. It is the
only raw fruit that can be eaten without distress in over-chronicler cases. It also neutralizes over-acidity and reduces irritation
by coating the lining of the stomach.

Temperature control: Many other cultures see bananas as a "cooling" fruit that can lower both the physical and emotional temperature
of expectant mothers. In Thailand , for example, pregnant women eat bananas to ensure their baby is born with a cool temperature.

Seasonal Affective Disorder (SAD): Bananas can help SAD sufferers because they contain the natural mood enhancer tryptophan.

Smoking &Tobacco Use: Bananas can also help people trying to give up smoking. The B6, B12 they contain, as well as the potassium and
magnesium found in them, help the body recover from the effects of nicotine withdrawal.

Stress: Potassium is a vital mineral, which helps normalize the heartbeat, sends oxygen to the brain and regulates your body's water
balance.. When we are stressed, our metabolic rate rises, thereby reducing our potassium levels. These can be rebalanced with the
help of a high-potassium banana snack.

Strokes: According to research in The New England Journal of Medicine, eating bananas as part of a regular diet can cut the risk of
death by strokes by as much as 40%!

Warts: Those keen on natural alternatives swear that if you want to kill off a wart, take a piece of banana skin and place it on the
wart, with the yellow side out. Carefully hold the skin in place with a plaster or surgical tape!

So, a banana really is a natural remedy for many ills. When you compare it to an apple, it has four times the protein, twice the
carbohydrate, three times the phosphorus, five times the vitamin A and iron, and twice the other vitamins and minerals. It is also
rich in potassium and is one of the best value foods around So maybe its time to change that well-known phrase so that we say, "A
banana a day keeps the doctor away!"

Pass it on to your friends
PS: Bananas must be the reason monkeys are so happy all the time! I will add one here; want a quick shine on our shoes?? Take the
INSIDE of the banana skin, and rub directly on the shoe...polish with dry cloth. Amazing fruit.

Why we fall asleep after eating

My question was why do I fall asleep after eating?

After reading all the previous articles, it seems the question should by why do we stay awake?

Biologically it seems we stay awake to eat and do the other activities that are needed to allow us to procreate and raise the next
generation to pass on our genes.

When we are hungry, a cell in our brain releases a chemical orexins (plus who knows what else) that keeps us alert so we can get
food.

Sugar blocks those cells from producing orexins. Apparently without the chemical to keep us awake, we get sleepy.

Avoid sugar and stay hungry if you want to stay alert.