Sitting down will kill you. How not to die…s=org.mozilla:en-US:official&client=firefox-a
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THURSDAY, Nov. 8 (HealthDay News) – In all the hours Americans spend in their office chairs or on their sofas, it's possible that they are packing a particularly unhealthy form of fat around the heart, according to a new study.
In addition, the fat stayed in place, even though people did regular exercise, according to a study reported this week in Los Angeles at the annual American Heart Association meeting.
CT scans from more than 500 elderly Americans found that over-sitting time was "significantly associated with pericardial fat around the heart," said study author Britta Larsen, a postdoctoral fellow in the Department of Cardiovascular Epidemiology at the University of California, San Diego.
Recently, there have been many large studies that suggest that sitting does not just mean physical activity, but also affects the body beyond the lack of exercise.
According to Larsen, this means that "even if you walk every day and then sit eight hours a day, the session still does something for your health." She also pointed out that sitting is harmful to health, even though scientists have identified weight gain.
"So we wanted to see if sitting has anything to do with it distribution Fat, because different types of fat are worse than others, "said Larsen.
The study examined data from 504 California adults with a mean age of 65 years. In particular, Larsen & #; s team examined CT scan data showing how much body fat types were stored in each participant's body.
"We looked at subcutaneous fat, that's outer stuff [for example, a “pot belly”]; then visceral fat, which is around your organs; intramuscular fat that is actually in your muscles; intrathorakisch [chest cavity] Fat; and pericardial fat that's around your heart, "said Larsen.
Participants were also asked how much time they spent each week and how much time they had spent being physically active.
The study found that the more time spent sitting, the larger the fat area around a person's heart, Larsen said. She explained that pericardial fat "is strongly related to cardiovascular disease, it interferes with heart function, it clogs the arteries – you do not want it there."
The study found that prolonged sitting had no significant relation to the other types of fat.


It also adds the evidence to suggest that lifestyle plays an important role in kidney disease and that prolonged sitting has a negative impact on health, Yates said.
Marc Hamilton, PhD, Pennington Biomedical Research Center, has been working on the topic for over a decade. It is becoming increasingly clear that prolonged sitting is bad for everyone, whether they are fit or fat or active or inactive.
"The experimental studies we've done and others agree that sitting is too unhealthy, even in people who are not overweight and those who exercise regularly," he says.
But it's still not clear if getting up makes a difference about every half hour, says Hamilton.
His own research suggests people are not completely inactive when they spend a long time at work or watching TV at home. In fact, they tend to spend about 40% of their time moving.
"I'm not sure it's very helpful to tell people with desk jobs to get up and move because they're already doing that," he says.
Scientific American – But as we'll discuss below, Sitting time is closely linked to health risk, regardless of how much physical activity you perform daily, In addition, it is quite possible to adhere to the current physical activity guidelines while being incredibly sedentary. To quote researcher Marc Hamilton Too much sitting is not synonymous with too little exercise, (If you take only one thing from this post, let it be the quote from Dr. Hamilton). That's why it's so important that when we use the term "sitting" we are all on the same page, which means that.
Now that we know what sedentary behavior is, we look at the relationship to health risk.
Epidemiological evidence
In 2009, Dr. Peter Katzmarzyk and his colleagues from the Pennington Biomedical Research Center have an influential longitudinal paper examining the relationships between sitting time and mortality in a sample of more than 17,000 Canadians (available here). Not surprisingly, they report that sitting time was associated with an increased risk of all-cause mortality and cardiovascular disease (there was no association between sitting and deaths from cancer). It is fascinating, however, that the relationship between sitting time and mortality was independent of physical activity. Actually, Those who sat most were approximately 50% more likely to die at follow-up than those who had the least sitting, even after age, smoking, and physical activity, Further analysis indicated that the relationship between time spent sitting and mortality was also independent of body weight. This suggests that all those who sit more (body weight, physical activity, smoking, alcohol consumption, age and gender) are at higher risk of death than those who sit less.
The above findings, which associate excessive sitting with bad health, are anything but isolated. For example, a similar longitudinal study from Australia reports that every hour of daily television (a sign of sitting time) is associated with an 11% increase in mortality risk, regardless of age, gender, waist circumference and body weight activity levels. And as my colleagues and I summarized in a recent review paper (PDF), numerous epidemiological studies have linked sedentary behavior to obesity, cardiometabolic risk, and even some cancers.

But I think they've all done those studies and results because they have nothing better to do than to invent scary things that you can write about, make sensational headlines. Maybe you have also had heart disease? Is diabetes real? Is something real? I think you are the only one who knows the truth, because you are so much smarter than all of us and know a lot about the world of media work and advertising.