Monday, 29 May 2017

What movies can you never get tired of watching?

Please write your 10 best favourite movies 🎥 in the comment box below .
My list (not in an order) - hard to choose 10 though🤔. These are the ones came to my mind first...... probably for a reason
1. The Matrix (1999)
2. One flew over the cuckoos nest (1975)
3. Forrest Gump (1994)
4. Interstellar (2014)
5. The Green Mile (1999)
6. The Shawshank Redemption (1994)
7. The Godfather 1 & 2 (1972 &74)
8. When Harry met Sally (1989)
9. Lagaan: Once Upon a Time in India (2001)
10. The pursuit of Happiness (2006)
Please write your 10 favourite movies. And please don't forget to share this post to your friends..... Let us see what their favourites are 💞

Sunday, 28 May 2017

New Research Shows That Chronic Fatigue Syndrome Isn’t Just “All in Your Head”

Researchers have discovered that people with chronic fatigue syndrome/myalgic encephalomyelitis have elevated levels of seven specific species of gut bacteria. This discovery could lead to targeted diagnostic tools and treatments for the disease.

CHRONIC FATIGUE SYNDROME

Chronic fatigue syndrome/myalgic encephalomyelitis (ME/CFS) is a debilitating disorder. The fatigue and other symptoms it causes result in an inability to participate in the daily activities of life for many sufferers. Although more than one million Americans have ME/CFS — more than lupus, multiple sclerosis, and some types of cancer — there is not yet any treatment, or meaningful diagnostic tool. Four times as many women suffer from ME/CFS, and it lasts for years in some patients.
Although the disease was previously thought of as some kind of imaginary ailment, ME/CFS is now being taken seriously by researchers. This week, new research published in Microbiome reveals that people who have ME/CFS also have abnormal levels of specific gut bacteria — and the levels of bacteria vary with symptom severity.
“By identifying the specific bacteria involved, we are one step closer to more accurate diagnosis and targeted therapies,” head researcher Ian Lipkin said in a press release from the Center for Infection and Immunity (CII) and the Mailman School of Public Health of Columbia University.
The team carefully matched, and then followed, 50 ME/CFS patients and 50 healthy controls. They took fecal and blood samples from all participants, and tested the fecal samples for bacterial species and the blood for immune molecules. Seven distinct species of intestinal bacteria were so strongly associated with ME/CFS that an accurate diagnosis could be predicted based on the elevated presence of all of them.
Although this study included a small sample, subject to further verification, this research could be the first step toward targeted diagnostic tools and treatments for the disease.
References: ScienceAlert - Latest, Microbiome Journal, Columbia University Mailman School of Public Health, CDC

Sunday, 21 May 2017

New Research Shows That Time Travel Is Mathematically Possible

Physicists have developed a new mathematical model that shows how time travel is theoretically possible. They used Einstein's Theory of General Relativity as a springboard for their hypothetical device, which they call a Traversable Acausal Retrograde Domain in Space-time (TARDIS).
BENDING TIME
Even before Einstein theorised that time is relative and flexible, humanity had already been imagining the possibility of time travel. In fact, science fiction is filled with time travelers. Some use metahuman abilities to do so, but most rely on a device generally known as a time machine. Now, two physicists think that it’s time to bring the time machine into the real world — sort
“People think of time travel as something as fiction. And we tend to think it’s not possible because we don’t actually do it,” Ben Tippett, a theoretical physicist and mathematician from the University of British Columbia, said in a UBC news release. “But, mathematically, it is possible.”
Essentially, what Tippet and University of Maryland astrophysicist David Tsang developed is a mathematical formula that uses Einstein’s General Relativity theory to prove that time travel is possible, in theory. That is, time travel fitting a layperson’s understanding of the concept as moving “backwards and forwards through time and space, as interpreted by an external observer,” according to the abstract of their paper, which is published in the journal Classical and Quantum Gravity.
Oh, and they’re calling it a TARDIS — yes, “Doctor Who” fans, hurray! — which stands for a Traversable Acausal Retrograde Domain in Space-time.

FEASIBLE BUT NOT POSSIBLE. YET.

“My model of a time machine uses the curved space-time to bend time into a circle for the passengers, not in a straight line,” Tippet explained. “That circle takes us back in time.” Simply put, their model assumes that time could curve around high-mass objects in the same way that physical space does in the universe.
For Tippet and Tsang, a TARDIS is a space-time geometry “bubble” that travels faster than the speed of light. “It is a box which travels ‘forwards’ and then ‘backwards’ in time along a circular path through spacetime,” they wrote in their paper.
Unfortunately, it’s still not possible to construct such a time machine. “While is it mathematically feasible, it is not yet possible to build a space-time machine because we need materials — which we call exotic matter — to bend space-time in these impossible ways, but they have yet to be discovered,” Tippet explained.
Indeed, their work isn’t the first to suggest that time traveling can be done. Various other experiments, including those that rely on photon stimulation, suggest that time travel is feasible. Another theory explores the potential particles of time.
However, some think that a time machine wouldn’t be feasible because time traveling itself isn’t possible. One points to the intimate connection between time and energy as the reason time traveling is improbable. Another suggests that time travel isn’t going to work because there’s no future to travel to yet.
Whatever the case may be, there’s one thing that these researchers all agree on. As Tippet put it, “Studying space-time is both fascinating and problematic.”
References: ScienceAlert, IOP Science, Phys. Org

Tuesday, 2 May 2017

Can WiFi cause cancer?

WiFi operates in the 2 to 5 GHz range - part of the microwave portion of the electromagnetic spectrum. This is in the same part of the spectrum where cell phones operate so I may refer to WiFi or cellphone electromagnetic radiation interchangeably. These are radio waves - no different than those used to broadcast television programs - except that they are higher in frequency. They aren't nearly as high a frequency as visible light - and no one worries about getting cancer from visible light (ultraviolet light, on the other hand, causes skin cancer - but this is the minimum energy necessary to cause ionizations that can cause breaks in strands of DNA - which is the mechanism by which cancer cells can be created). There is no credible evidence that non-ionizing radiation has any adverse health effects at all. There is no radiobiologic mechanism that could explain such an association - and absolutely no scientifically valid evidence that this has ever happened.
Dr Garry Larson MD, Medical Director- Procure Proton Therapy Center OKC states that he has treated patients with cancer for over thirty years as a board certified radiation oncologist and he is familiar with every carcinogenic agent known to man - He is with absolute certainty that radio waves cannot harm you (unless perhaps you were in the path of a multi-megawatt microwave beam in which case they might cook you - but as far as he knows, there is no likelihood that this danger even exists).
There has never been (and will never be) a randomised trial assessing the cause and effect relationship between radio frequency emissions and neoplastic disease. In order to have a randomised study, half of the randomly selected subjects would need to avoid cellphone use and that's not going to happen.
Humans have been exposed to man-made radio frequency radiation for over 100 years and we have always been exposed to microwave radiation from the Cosmos.
For example, the latency period for radiation induced malignancies is, on the average say 20 years, but epidemiologic studies of large groups of people (that only require a few thousand patients to reach stastistical significance) exposed to ionizing radiation start showing an increase above baseline by seven years. So conservatively, there should be at least a few excess cases of glioma, caused by cellular (or WiFi) electromagnetic radiation by now.
See this reference which looks at all the reported cases of gliomas caused by ionizing radiation (where we have a plausible explanation for cause and effect). Millions of people have received brain irradiation and only 73 cases of radiation induced gliomas have been reported.
A Report on Radiation-Induced Gliomas
We do have evidence that cellphones (or WiFi) do NOT cause an increase in brain tumors. Look at the time period over which cellphone use became common - say over the last twenty years. During that time, the incidence of brain tumours has remained absolutely flat. With over four billion people using cellphones (or WiFi) today, if there was any influence on the development of brain tumors, we would be seeing that by now.
The data from the National Cancer Institute below shows no increase in the incidence of primary brain tumours over the period of time that cell phones have been in use.
Say someone found a potential association between carrying coins in your pocket and the risk of a particular type of tumour. It would set off a frenzy of activity among a group of people who were convinced that this association was real. They would lobby for a law requiring that warning signs be placed on change machines. The effect would snowball until some people would demand that the government stop minting coins.

So lets review

There is no biologic mechanism to explain why non ionizing radiation (like the cellphone's emission of radio waves) could induce any type of tumour
We do have a mechanism to explain the association between ionizing radiation and tumour induction, but out of millions of people who have received radiation therapy to their brain, only 73 radiation induced gliomas have been reported in the world's literature.
For radiation induced neoplasms in general, epidemiologic studies can show an increase in the likelihood of tumours with only a few thousand people over a time period less than ten years
At least something on the order of millions (if not billions) of people have used cell phones for over two decades now and there is no evidence that the incidence of brain tumors has increased over that time period
Now lets get down to why this sort of irrational belief takes hold and, among other things, prompts five questions on this subject (at least that I have seen) in the time that I have been reading Quora (less than two months).
We have essentially no control over whether we live or die - except that we should avoid dangerous behaviours like smoking, becoming obese, not wearing seat belts, texting while driving, etc. Otherwise, over a trillion cells carry on countless biochemical processes that we have no control over. One out of four people will get cancer - beyond avoiding foolish behaviour, we can't influence that risk.
Since we have this subconscious, ever present fear of death (see below*), we employ magical thinking to give us a false sense of power over it. When we create artificial threats to our survival in our imagination - and then avoid practicing behaviours that make us vulnerable to those threats - we feel we have some power over whether we live or die. These are also know as superstitions.
Primitive cultures made sacrifices to imaginary gods so they wouldn't destroy their village - Children learn to avoid stepping on cracks - The germaphobe may engage in compulsive hand washing - and some people avoid putting their cellphone right next to their skin.

Vivek Murthy, MD, Replaced as Surgeon General of America

The Trump administration removed Vivek Murthy, MD, on April 21 from his position as surgeon general in the middle of his 4-year term.
His temporary replacement is a nurse, Sylvia Trent-Adams, RN, PhD, formerly the deputy surgeon general.
The 39-year-old Dr Murthy was a holdover from the Obama administration who was confirmed by the Senate in a mostly party-line 51-to-43 vote in December 2014. The Department of Health and Human Services (HHS) announced that Dr Murthy was asked to resign and ""relieved of his duties"" after assisting the new administration in its transition. HHS Secretary Tom Price, MD, "thanks him for his dedicated service to the nation," according to the agency's news release, adding that Dr Murthy will continue to serve as a member of the US Public Health Service (USPHS) Commissioned Corps.
The USPHS Commissioned Corps and its 6600 uniformed health professionals are overseen by the surgeon general.
Surgeon generals have 4-year terms, and some have begun their term under one party's flag and finished it — or served out much of it — under another flag. The most recent example was former Surgeon General David Satcher, MD, PhD, a Bill Clinton appointee who completed his 4 years during the George W. Bush administration.
HHS did not give a reason why Dr Murthy was relieved of his duties. However, his track record holds some possible clues. Senate Republicans opposed his nomination in part because they viewed him as a political partisan. During the 2008 presidential election, Dr Murthy co-chaired a group called Doctors for Obama, and he later helped lead a successor group called Doctors for America that supported passage of the Affordable Care Act. He also incurred the wrath of the National Rifle Association and its congressional allies for declaring gun violence a public health issue.
Georges Benjamin, MD, the executive director of the American Public Health Association, said he was surprised by Dr Murthy's dismissal.
"I knew he anticipated completing his four years," Dr Benjamin told Medscape Medical News, noting that he had been in touch with Dr Murthy. "He was expecting to do that."
The Trump administration's removal of Dr Murthy "is another way of politicizing the job, which is inappropriate," said Dr Benjamin. "The reason why the surgeon general has a term is to depoliticize the position."
Efforts to reach Dr Murthy for an interview were unsuccessful. However, he did speak for himself in a post on his Facebook page. There, he said that he had been terminated for taking a principled stand.
"Many have asked why I chose not to resign as Surgeon General when I was asked to do so," he wrote. "My reason was simple: because I would never willfully abandon my commitment to my Commissioned Corps officers, to the American people, and to all who have stood with me to build a healthier and more compassionate America."

Lesson Learned: "Choose Love"

Before serving as surgeon general, Dr Murthy was a hospitalist at Brigham and Women's Hospital in Boston, Massachusetts, and an instructor in medicine at Harvard Medical School. He also cofounded a nonprofit group promoting HIV/AIDS education and a company that makes software for clinical trials.
One of Dr Murthy's top priorities as surgeon general was what he called "tobacco and drug-free living." To that end, he sent a letter to more than 1 million prescribers in November 2016 asking them to help battle the opioid epidemic, in part through better prescribing habits. Later that month, he released a major report on substance abuse that was likened to the surgeon general's landmark report on smoking issued in 1964.
In December 2016, Dr Murthy followed up with a report that called e-cigarettes a public health crisis for the nation's youth.
"I thought he was visible on the right issues," said the APHA's Dr Benjamin.
In another post on his Facebook page, Dr Murthy reflected on his brief tenure as surgeon general.
"For the grandson of a poor farmer from India to be asked by the president to look out for the health of an entire nation was a humbling and uniquely American story," he wrote. "While I had hoped to do more to help our nation tackle its biggest health challenges, I will be forever grateful for the opportunity to have served."
He listed a number of lessons he picked up on the job.
"We will only be successful in addressing addiction — and other illnesses — when we recognize the humanity within each of us," he wrote. "People are more than their disease. All of us are more than our worse mistakes."
And this: "The world is locked in a struggle between love and fear. Choose love. It is the world's oldest medicine."
Dr Murthy said the nation will be in "capable and compassionate hands" with Dr Trent-Adams taking over as acting surgeon general.
A 24-year veteran of the USPHS Commissioned Corps, Dr Trent-Adams has served as chief nursing officer of the USPHS and the deputy associate administrator for the HIV/AIDS Bureau in HHS. Before joining the USPHS Commissioned Corps, she was a nurse in the US Army and a research nurse at the University of Maryland.