Hiển thị các bài đăng có nhãn cardiovascular. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn cardiovascular. Hiển thị tất cả bài đăng

Thứ Bảy, 8 tháng 4, 2017

Archaeologists Unearthed the First Pope In History. What They Found Proved Something Incredible

The mummy of Pope St. Pius I is one of the best preserved in the history of mankind. His corpse was not embalmed it was mummified naturally for a period of about 1,700 years.

His remains are considered a true discovery for science, because even though during life he suffered from cardiovascular diseases, gallstones, gout, diabetes, caries and tuberculosis, these organs preserved very well.

This bishop is considered as the first official Pope. He was born in Aquileia, Italy. And he died in 155, to be buried in the beautiful cathedral of Aquileia.

Much later, in the year 1789 the building of the cathedral was demolished. The coffin of the Pope was opened and everyone was surprised by the fact that the body was in perfect condition. Finally the body was transferred to a chapel in the year 1875.

Studies say there are several reasons why the body has been preserved in such a good way. First, because he was naturally mummified thanks to the air between the months of November and December, which are the coldest of the year and because of the large amount of plants and humidity inside the crypt.



But until 2010 scientists had no possibility to study the remains carefully.
The coffin’s pillow and mattress were filled with plants and vegetables that gave off a strong smell, probably to hide the smell of the corpse, but also to preserve it. There were lavender, mint, hops and juniper berries. ”

However, the most surprising thing was that they found a plenty of documents narrating different versions of the alleged life of the son of God, Jesus of Nazareth.



The discovery suggests that senior leaders of the Catholic Church hid the evidence that proves that the history of the Messiah was only an invention to carry out the purposes of the order.

Among the documents could be found the stories of hundreds of prophets who had a life very similar to that of Christ, among which stand out the figures of Horus, Mithra, Krishna, Dionysius, etc.

After the find, a large number of versions about what actually happened with Jesus has emerged. Science, on the other hand, claims that there is evidence to prove the existence of Jesus the man, but not as the life of the supposed son of God, that the narrative created from the life of other prophets and different cultures of the world.

Source: www.smithsonianmag.com

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Thứ Tư, 8 tháng 3, 2017

The Incredible Benefits of Exercise

Many people hit the gym or pound the pavement to improve cardiovascular health, build muscle, and of course, get a rockin’ bod, but working out has above-the-neck benefits too. For the past decade or so, scientists have pondered how exercising can boost brain function. Regardless of age or fitness level (yup, this includes everyone from mall-walkers to marathoners), studies show that making time for exercise provides some serious mental benefits. Get inspired to exercise by reading up on these unexpected ways that working out can benefit mental health, relationships, and lead to a healthier and happier life overall.

1. Reduce stress. Rough day at the office? Take a walk or head to the gym for a quick workout. One of the most common mental benefits of exercise is stress relief. Working up a sweat can help manage physical and mental stress. Exercise also increases concentrations of norepinephrine, a chemical that can moderate the brain’s response to stress. So go ahead and get sweaty—working out can reduce stress and boost the body’s ability to deal with existing mental tension. Win-win!



2. Boost happy chemicals. Slogging through a few miles on the ‘mill can be tough, but it’s worth the effort! Exercise releases endorphins, which create feelings of happiness and euphoria. Studies have shown that exercise can even alleviate symptoms among the clinically depressed. For this reason, docs recommend that people suffering from depression or anxiety (or those who are just feeling blue) pencil in plenty of gym time. In some cases, exercise can be just as effective as antidepressant pills in treating depression. Don’t worry if you’re not exactly the gym rat type—getting a happy buzz from working out for just 30 minutes a few times a week can instantly boost overall mood.

3. Improve self-confidence. Hop on the treadmill to look (and more importantly, feel) like a million bucks. On a very basic level, physical fitness can boost self-esteem and improve positive self-image. Regardless of weight, size, gender, or age, exercise can quickly elevate a person’s perception of his or her attractiveness, that is, self-worth. How’s that for feeling the (self) love?



4. Enjoy the great outdoors. For an extra boost of self-love, take that workout outside. Exercising in the great outdoors can increase self-esteem even more. Find an outdoor workout that fits your style, whether it’s rock-climbing, hiking, renting a canoe, or just taking a jog in the park. Plus, all that Vitamin D acquired from soaking up the sun (while wearing sunscreen, of course!) can lessen the likelihood of experiencing depressive symptoms. Why book a spa day when a little fresh air and sunshine (and exercise) can work wonders for self-confidence and happiness?

5. Prevent cognitive decline. It’s unpleasant, but it’s true—as we get older, our brains get a little…hazy. As aging and degenerative diseases like Alzheimer’s kill off brain cells, the noggin actually shrinks, losing many important brain functions in the process. While exercise and a healthy diet can’t “cure” Alzheimer’s, they can help shore up the brain against cognitive decline that begins after age 45. Working out, especially between age 25 and 45, boosts the chemicals in the brain that support and prevent degeneration of the hippocampus, an important part of the brain for memory and learning.

6. Alleviate anxiety. Quick Q&A: Which is better at relieving anxiety—a warm bubble bath or a 20-minute jog? You might be surprised at the answer. The warm and fuzzy chemicals that are released during and after exercise can help people with anxiety disorders calm down. Hopping on the track or treadmill for some moderate-to-high intensity aerobic exercise (intervals, anyone?) can reduce anxiety sensitivity. And we thought intervals were just a good way to burn calories!

7. Boost brainpower. Those buff lab rats might be smarter than we think. Various studies on mice and men have shown that cardiovascular exercise can create new brain cells (aka neurogenesis) and improve overall brain performance. Ready to apply for a Nobel Prize? Studies suggest that a tough workout increases levels of a brain-derived protein (known as BDNF) in the body, believed to help with decision making, higher thinking, and learning. Smarty (spandex) pants, indeed.



8. Sharpen memory. Get ready to win big at Go Fish. Regular physical activity boosts memory and ability to learn new things. Getting sweaty increases production of cells in hippocampus responsible for memory and learning. For this reason, research has linked children’s brain development with level of physical fitness (take that, recess haters!). But exercise-based brainpower isn’t just for kids. Even if it’s not as fun as a game of Red Rover, working out can boost memory among grown-ups, too. A study showed that running sprints improved vocabulary retention among healthy adults.

9. Help control addiction. The brain releases dopamine, the “reward chemical” in response to any form of pleasure, be that exercise, sex, drugs, alcohol, or food. Unfortunately, some people become addicted to dopamine and dependent on the substances that produce it, like drugs or alcohol (and more rarely, food and sex). On the bright side, exercise can help in addiction recovery. Short exercise sessions can also effectively distract drug or alcohol addicts, making them de-prioritize cravings (at least in the short term). Working out when on the wagon has other benefits, too. Alcohol abuse disrupts many body processes, including circadian rhythms. As a result, alcoholics find they can’t fall asleep (or stay asleep) without drinking. Exercise can help reboot the body clock, helping people hit the hay at the right time.



10. Increase relaxation. Ever hit the hay after a long run or weight session at the gym? For some, a moderate workout can be the equivalent of a sleeping pill, even for people with insomnia. Moving around five to six hours before bedtime raises the body’s core temperature. When the body temp drops back to normal a few hours later, it signals the body that it’s time to sleep.

11. Get more done. Feeling uninspired in the cubicle? The solution might be just a short walk or jog away. Research shows that workers who take time for exercise on a regular basis are more productive and have more energy than their more sedentary peers. While busy schedules can make it tough to squeeze in a gym session in the middle of the day, some experts believe that midday is the ideal time for a workout due to the body’s circadian rhythms.

12. Tap into creativity. Most people end a tough workout with a hot shower, but maybe we should be breaking out the colored pencils instead. A heart-pumping gym session can boost creativity for up to two hours afterwards. Supercharge post-workout inspiration by exercising outdoors and interacting with nature (see benefit No. 4). Next time you need a burst of creative thinking, hit the trails for a long walk or run to refresh the body and the brain at the same time.

13. Inspire others. Whether it’s a pick-up game of soccer, a group class at the gym, or just a run with a friend, exercise rarely happens in a bubble. And that’s good news for all of us. Studies show that most people perform better on aerobic tests when paired up with a workout buddy. Pin it to inspiration or good old-fashioned competition, nobody wants to let the other person down. In fact, being part of a team is so powerful that it can actually raise athletes’ tolerances for pain. Even fitness beginners can inspire each other to push harder during a sweat session, so find a workout buddy and get moving!

Working out can have positive effects far beyond the gym (and beach season). Gaining self-confidence, getting out of a funk, and even thinking smarter are some of the motivations to take time for exercise on a regular basis.
Source: Sophia Breene for Greatist.com

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Thứ Ba, 10 tháng 1, 2017

The Mesentery: A 'new' organ you didn't know you had

The Mesentery, which connects the intestine to the abdomen, has been classified as a single organ. The organ's continuity can be seen only when it's exposed in a certain way.



In case you've ever wondered what connects your intestine to your abdomen, there's a word -- and now, a single organ -- for that: the Mesentery. But don't worry; you haven't grown a new organ. It's always been there, performing important functions that affect systems throughout the body, from cardiovascular to immunological.

Leonardo da Vinci depicted it as one contiguous organ, and it remained that way for centuries until 1885, when Sir Frederick Treves' findings presented the mesentery as fragmented amongst the small intestine, transverse colon and sigmoid colon.

J. Calvin Coffey, foundation chair of surgery at the University of Limerick, is reclassifying this part of the digestive system as a contiguous organ. In a new study, Coffey has established the anatomy and structure of the mesentery, using images and compiling research to show that the organ's continuity can be seen only when it's exposed in a certain way.



The current findings resonate with those of Carl Toldt, who accurately described the presence of the mesentery in 1878. But his research was largely overlooked. At the time, Treves' findings supported the statements of Henry Gray, who mentioned multiple mesenteries in the 1858 first edition of his book "Gray's Anatomy," the go-to medical textbook for students around the world.

Coffey's research has already prompted the latest edition of "Gray's Anatomy" to refer to the mesentery as a continuous organ.

What does it do?
Linking your gut to the rest of your body is an important task, and the mesentery performs it well.
Among its functions, it carries blood and lymphatic fluid between the intestine and the rest of the body. It also maintains the position of the intestine so that it's connected with the abdominal wall without being in direct contact.

That connection is key. "Without a mesentery to keep the intestine connected, the intestine would have to attach directly to the body wall," Coffey said. "It is unlikely that it would be able to contract and relax along its entire length if it were directly in contact. It maintains the intestine in a particular conformation, 'hitched up,' so that when you stand up or walk about, it doesn't collapse into the pelvis and not function."


How the mesentery functions in your body. (A) Peritoneum, mesentery, fascia and intestine. (B) Mesentery, fascia and intestine. (C) Mesentery and intestine. (D) Mesentery.

Although researchers know that the mesentery plays an important role in the intestinal, vascular, endocrine, cardiovascular and immunological systems, more research is needed to determine the extent of those roles.

But they do have evidence that the mesentery takes environmental signals from the intestine and orchestrates the body's response, Coffey said. One example is how bacteria are sampled in the lymph glands in the mesentery. In response, the glands then coordinate immune responses.

Why has it been misunderstood?
To look at the shape of the membrane, which Coffey calls remarkable, it's easy to see why the mesentery has been depicted differently. It has a spiral formation in the abdomen and is packaged along a spinal trajectory, starting in the upper abdomen and ending in the pelvis.

"In between, it fans out, like a Chinese fan, to span the length of the intestine from the upper small intestine to the end of the large bowel," Coffey said.
The latest anatomy and structure clarifications aid not only doctors, but medical students as well.

"For students, it greatly simplifies the matter of the mesentery," Coffey said. "This was traditionally regarded as a complex field. The current anatomic model is elegant and simple and will help students understand this structure. It will also provide them with a new perspective from which to view other organs in the abdomen. For example, we now know that the mesentery and intestine intersect along the entire length of the small and large intestine, whereas previously, this was though to occur in some regions only."



Improving surgery and treatment
More research will allow for better definition of the gut membrane's function, what happens when it functions abnormally and diseases that affect it. This also allows for mesenteric science to become its own field of medical study, like neurology.

Coffey hopes that creating a better understanding of the mesentery can help with diagnosing issues and less invasive ways of assessing them. Currently, its remote location in the body means the mesentery can be accessed only radiologically or surgically. This research lays the foundation for investigating possible prescriptions and how less-invasive endoscopic procedures during a colon-scopy could map the mesentery.

Adopting a universal classification like this in the medical world has benefits that extend to standardizing surgical procedures, such as moving or cutting into the intestine. The mesentery extends from the duodenum, or first part of the small intestine immediately beyond the stomach, all the way to the rectum, the final section of the large intestine.

Because of this, it can factor into diseases such as Crohn's, colorectal cancer, inflammatory bowel disease or cardiovascular disease and major health concerns like diabetes, obesity and metabolic syndrome. The more doctors know about the exact function of the mesentery, the more measures they can take to investigate the part it plays.

"For doctors, it provides us with an opportunity to refresh our approach to many diseases such as inflammatory bowel disease and others," Coffey said. "This could help in identifying the mechanisms underlying these conditions and help us in unraveling their cause and how they develop."
Source: Ashley Strickland, CNN

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