Hi Medic

Wednesday, February 21, 2007

Why we procastinate

By Miranda HittiWebMD Medical News
Reviewed By Louise Chang, MDon Friday, January 12, 2007

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Jan. 12, 2007 -- The reason we procrastinate may be more about confidence than perfectionism, a new study says.
Contrary to popular belief, procrastinators generally aren't perfectionists; instead, they're more likely to delay tasks they're not confident about, says researcher Piers Steel, PhD.
Steel is an assistant professor in the human resources and organizational dynamics department of Canada's University of Calgary.
"Essentially, procrastinators have less confidence in themselves, less expectancy that they can actually complete a task," Steel says in a University of Calgary news release.
"Perfectionism is not the culprit," he continues. "In fact, perfectionists procrastinate less, but they worry about it more."
Steel reviewed procrastination research from scholarly books, conferences, journals, and other sources.
His review appears in the January edition of the American Psychological Association's Psychological Bulletin.
Procrastination has been around ever since civilization began and "does not appear to be disappearing anytime soon," writes Steel.
So he boiled procrastination down to a mathematical formula.
The formula predicts procrastination based on a person's expectation of finishing a task, the task's importance, the person's desire to complete the task, and how soon the task needs to be done.
The formula suggests people are less likely to procrastinate if the task has to be done ASAP and they feel confident they are up to the task.
It suggests people are more likely to procrastinate if the task is less urgent, less appealing, or daunting to the person facing the task.
Other factors may also be involved, Steel notes.
For example, he points out that rebellious people may tend to procrastinate tasks given by authority figures; and depressed people may procrastinate due to low energy.
More research is needed on procrastination, and the sooner, the better, Steel concludes.
via: WebMD

Tuesday, July 11, 2006

Sleep stages

Hi, I came across this while trying to get a picture on sleep. I think you'll like it.


I've always heard that a good nights sleep does a lot of good but after reading this post I'm sure like me you'll appreciate it more. See what I found on WEBMd
"Middle-aged adults may help their blood pressure by getting at least six nightly hours of sleep.
In Hypertension, experts report that middle-aged adults are more likely to be diagnosed with high blood pressure (hypertension) if they slept less than six hours per night.
Blood pressure falls during sleep. Short nightly sleep may mean higher average blood pressure over 24 hours.
In other words, skimping on nightly sleep in middle age may deprive the body of an overnight blood pressure break, eventually making high blood pressure more likely.
The findings need to be confirmed. Meanwhile, there's plenty of reason to get enough sleep, says researcher James Gangwisch, PhD, of Columbia University's Mailman School of Public Health.
"A good night's sleep is very important for good health," Gangwisch says in an American Heart Association news release.
About the Study
Gangwisch and colleagues studied data on about 4,800 people who took a national health survey in 1982 and also did follow-up surveys until 1992.
In the first survey, participants reported their nightly sleep and factors that might affect blood pressure. Those factors included smoking, alcohol use, salt consumption, physical activity, age, sex, and diabetes. Participants were also screened for depression, which often affects sleep.
In follow-up surveys, participants reported any diagnosis of high blood pressure.
Among people aged 32-59, those who reported getting less than six hours of nightly sleep in the original survey were twice as likely to have been diagnosed with high blood pressure by 1992.
Obesity and diabetes partly accounted for the findings, but sleep still mattered, the study shows.
Cause Unclear
The study doesn't prove that participants' sleep habits affected their blood pressure."
Sleep habits were only checked once. Changes in those habits might affect the results, the researchers note.
So make sure you try and get a goodnight's rest, besides the work can always wait.


Friday, July 07, 2006

Proteins:are they key to effective weight loss or not?

big No. 1 on the list of pros for high protein is that it leaves a dieter feeling full and happy.
"Protein seems to leave the stomach slower than carb or fat, so a person may feel full longer with more protein in their diet," says Moores.
Fuller "longer" means that a dieter doesn't feel the need to eat as frequently, which can lead to weight loss. Appetite aside, high-protein diets encourage weight loss -- physiologically speaking.
"Weight loss occurs, often fairly quickly, which results in happy dieters -- short-term happy that is," Moores tells WebMD.
Why the short-term satisfaction? Because the weight loss is generally coming from the wrong place, and once the diet ends, the pounds come back.
"Much of the weight lost with the Atkins diet is water," says Karol Watson, MD, co-director of the UCLA Program in Preventive Cardiology.
Watson explains that eating only protein forces the body into starvation mode because most tissues, including the brain, typically prefer to run on glucose, or blood sugar, which is supplied by carbohydrates. On a carb-deprived, high-protein diet, trouble sets in.
"When there is not enough carbohydrate to convert into blood sugar, the body is forced to use stored blood sugar from the liver and muscles," Watson tells WebMD. "This process results in muscle breakdown. Because muscle is mostly water, one will lose weight very rapidly in the first few days. If the carbohydrate restriction is prolonged, the brain eventually will run on fat stores for fuel, called ketosis."
Unfortunately, ketosis brings with it more than weight loss, but a host of problems -- some serious.
"Ketosis is associated with irritability, headaches, and enhanced kidney work," says Johnston. "Also, ketosis may cause heart palpitations and has been implicated in cardiac arrest."
The effect of high-protein diets on the heart doesn't stop there -- the cardiovascular system comes into play as well.
"High-protein diets are often also high in saturated fat," says Watson. "Increased saturated fat intake raises the risk of coronary heart disease and stroke. In addition, some high-protein/low-carbohydrate diets limit intake of high-fiber plant foods, which can help lower cholesterol."
Overall, these diets might be power-packed in the protein department, but beyond that, they're lacking.
"High-protein diets lack critical nutrients," says Watson. "Restricting carbohydrates means you restrict plant-based foods, which are rich in phytochemicals and antioxidants. These chemicals offer protection against cancer and other diseases."
Via: WebMD


Wednesday, June 21, 2006

Alternate meal for heart disease

Whenever we include fiber in our meal usually it's for the gut (to flush out waste) but according to WebMD fiber helps fight a variety of other diseases which include diabetes and heart disease. Now you may think, I have to eat a full plate or have so many servings of vegetables but that's not necessary. All your body needs is about 20- 35grams of fiber everyday.
According to Martin O. Weickert, MD, of the German Institute of Human Nutrition in Nuthetal, German people who eat a lot of cereal fibers, such as bran, are less likely to get diabetes.
His research team studied 17 overweight or obese women. For three days, three times a day, the women ate some white bread. Half the women got plain white bread. The other half got bread spiked with 10.4 grams of oat fiber.
Over time, the bodies of overweight people become less and less sensitive to insulin, the hormone that controls blood sugar levels. This lack of sensitivity results in diabetes in some people. Weickert and colleagues found that the women who ate the oat fiber over the short three-day time period became significantly more sensitive to insulin.
What's going on? Cereal fiber is also called insoluble fiber. It can't be digested, but it does give bulk to the stool. That's good in and of itself. But Weickert suggests that increased insoluble fiber leads to more fermentation at the lower end of the bowels. This might set off a chain reaction that changes the way their body responds to insulin.

Tuesday, June 13, 2006

In a lighter mood

Meet Salmonella and pseudomonas. What could they be doing now, let's take a look.
Salmonella: Hi pseudye you'll never guess where I was today.
Pseudomonas: where
Salmonella: Did you know I actually dined with queen elizabeth in intestinalis.
Pseudomonas: Hmm that's not true you're just talking.
Salmonella: Yes I did.How would you know when you're always in the surgeon's hand.
Pseudomonas: At least I'm doing a service to humanity
Salmonella: Service to humanity my big foot what greater service is better than bringing the common man's problems to the noble queen.
Pseudomonas: Aaah blowing your trumpet, you'll be well taken care of when staphylococcus comes here.
Salmonella: Can't you stand on your own feet, staph can't even stand on his own. When penicillin gets here he'll run for cover and you know what, I'll still be standing.

Thursday, June 08, 2006

Cervical cancer vaccine approved

Finally the long awaited vaccine for cervical cancer is here it was approved yesterday by the FDA.It is called Gardasil.Cervical cancer leads to cancer of the vulva and the vagina. So this vaccine comes as a great relief. Appart from being the first cervical cancer vaccine, it is also the first the first vaccine developed to prevent any cancer. It is also a vaccine for genital warts.
It has a few setbacks though:
It is approved for 9-26 year old girls
It does not prevent all HPV strains, it is protective against HPV-18 and HPV-16
which accounts for about 70% of cervical cancers and HPV-6 andHPV-11, which accounts for about 90% of genital warts. The good news though is that it proved 100% effective in clinical trials. For more information on the drug visit WebMD

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Monday, June 05, 2006

Kids who sleep more weigh less

Kids today tend to sleep less and weigh more than their peers growing up just a few decades ago. Now intriguing new research suggests this is no coincidence.
The survey of grade-schoolers in Quebec showed that the less the children slept the more likely they were to become overweight.
Children who routinely got 10 hours or less of sleep a night had almost 3.5 times the risk than those who got 12 hours or more. Lack of sleep was a bigger risk factor for overweight and obesity in the study than any other known contributor, including parental obesity, family income, or time spent in front of the television or computer.
Although the observational findings must be confirmed in clinical trials, study co-author Angelo Tremblay, PhD, says the evidence that sleep deprivation plays a role in obesity is mounting.
"It is ironic that part of the solution to obesity might lie in sleep, the most sedentary of all human activities," he says. "In light of this study's results, my best prescription against obesity in children would be to encourage them to move more and to make sure they get enough sleep."
Twice as Many Overweight Kids
The rise in childhood obesity has been identified as a major public health concern in the industrialized world. There are twice as many overweight kids between the ages of 6 and 11 in the United States today than there were 20 years ago, and the number of teens who are overweight or obese has more than tripled.
At the same time, studies suggest that sleep deprivation is an increasing problem among children and adolescents.
While research also suggests that sleep deprivation may contribute to obesity among adults, few studies have investigated sleep patterns and weight in children.
The study by Tremblay and colleagues from Quebec's Laval University included 422 grade-school students in Quebec. There were equal numbers of boys and girls with an average age of 6.5 for the girls and 6.6 for the boys. Researchers measured the children's weight, height, and waist size, and information on sleep patterns and lifestyle was obtained through phone interviews with parents.
One in five boys in the study and about one in four girls were found to be overweight.
When compared with children reporting 12 to 13 hours of sleep a night, those that got 10.5 to 11.5 hours were more than 40% more likely to be overweight or obese, and those that got eight to 10 hours were almost 3.5 times as likely to be above normal weight.
via WebMD