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The Food and Drug Administration, criticized by its own scientific advisers for ignoring available data about health risks posed by a chemical found in everyday plastic, said yesterday it has no plans to amend its position on the substance but will continue to study it. The agency has been reviewing its risk assessments for bisphenol A, a chemical used to harden plastic that is found in a wide variety of products, from baby bottles to compact discs to the lining of canned goods. The chemical, commonly called BPA, mimics estrogen and may disrupt the body's carefully calibrated endocrine system. Over the past decade, more than 130 studies have linked BPA to breast cancer, obesity, diabetes, neurological problems and other disorders. Much of the new research suggests that BPA has an effect at very low doses -- lower than the current safety standard set by the FDA. The most prominent finding was by the National Toxicology Program, part of the National Institutes of Health, which reported that there is "some concern" that BPA may affect the brain and behavioral development of fetuses, infants and young children. In October, the FDA was faulted by its own panel of independent science advisers, who said the agency's position on BPA was scientifically flawed. Yesterday, Laura Tarantino, director of the FDA's Office of Food Additive Safety, said the FDA will respond to that recommendation by performing additional analysis. She said she did not know if it would last months or years. "I can't tell you when we will finalize this," she said.
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Take a walk down the street or through the park and you'll see them – people of all ages toting bottles of water. Last year, Americans drank nine billion gallons out of those little plastic bottles. Sure, it's healthier than soda, but all that plastic is just as bad for the environment, creating an estimated 1.5 million tons of waste each year. So, more and more places are banning bottled water. Washington University in St. Louis will end almost all sales by the end of this semester. San Francisco declared it a no-no in city offices last year. Other local governments may do the same. Some brands, including Coca-Cola's Dasani and Pepsi's Aquafina, come from the tap – and supporters of these measures argue you're better off just filling a reusable container at the water fountain for free. A cheap, calorie-free alternative that doesn't hurt the environment. Now, I'll drink to that.
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Neuroscientists have shown that they can [create] a “body swapping” illusion that could have a profound effect on a range of therapeutic techniques. At the annual meeting of the Society for Neuroscience last month, Swedish researchers presented evidence that the brain, when tricked by optical and sensory illusions, can quickly adopt any other human form, no matter how different, as its own. “You can see the possibilities, putting a male in a female body, young in old, white in black and vice versa,” said Dr. Henrik Ehrsson of the Karolinska Institute in Stockholm. The technique is simple. A subject stands or sits opposite the scientist, as if engaged in an interview. Both are wearing headsets, with special goggles, the scientist’s containing small film cameras. The goggles are rigged so the subject sees what the scientist sees: to the right and left are the scientist’s arms, and below is the scientist’s body. To add a physical element, the researchers have each person squeeze the other’s hand, as if in a handshake. Now the subject can see and “feel” the new body. In a matter of seconds, the illusion is complete. In a series of studies, using mannequins and stroking both bodies’ bellies simultaneously, the Karolinska researchers have found that men and women say they not only feel they have taken on the new body, but also unconsciously cringe when it is poked or threatened. In previous work, neuroscientists have induced various kinds of out-of-body experiences using similar techniques. The brain is so easily tricked, they say, precisely because it has spent a lifetime in its own body.
Using technology originally developed for mass disasters, Boston disease trackers are embarking on a novel experiment - one of the first in the country - aimed at eventually creating a citywide registry of everyone who has had a flu vaccination. The resulting vaccination map would allow swift intervention in neighborhoods left vulnerable to the fast-moving respiratory illness. The trial starts this afternoon, when several hundred people are expected to queue up for immunizations at the headquarters of the Boston Public Health Commission. Each of them will get a bracelet printed with a unique identifier code. Information about the vaccine's recipients, and the shot, will be entered into handheld devices similar to those used by delivery truck drivers. Infectious disease specialists in Boston and elsewhere predicted that the registry approach could prove even more useful if something more sinister strikes: a bioterrorism attack or the long-feared arrival of a global flu epidemic. In such crises, the registry could be used to track who received a special vaccine or antidote to a deadly germ. "Anything you can do to better pinpoint who's vaccinated and who's not, that's absolutely vital," said Michael Osterholm, director of the Center for Infectious Disease Research & Policy at the University of Minnesota. "I wish more cities were doing this kind of thing." When people arrive for their shots, they will get an ID bracelet with a barcode. Next, basic information - name, age, gender, address - will be entered into the patient tracking database. There will be electronic records, too, of who gave the vaccine and whether it was injected into the right arm or the left, and time-stamped for that day.
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A retired medical supply manufacturer who considers bisphenol A to be "perfectly safe" gave $5 million to the research center headed by the chairman of a Food and Drug Administration panel about to rule on the chemical's safety. The July donation from Charles Gelman is nearly 50 times the annual budget of the University of Michigan Risk Science Center, where Martin Philbert is founder and co-director. Philbert did not disclose the donation to the FDA, and agency officials learned of it when reporters asked about it. Gelman said he considers the chemical, which is used to make baby bottles and aluminum can liners, to be safe. He said he had made his views clear to Philbert in several conversations. Philbert denied that. Philbert's committee is expected to release its opinion this month. The decision of Philbert's committee is expected to have huge implications on the regulation and sale of the chemical in items such as baby bottles, reusable food containers and plastic wraps. Since the late 1990s, studies have linked bisphenol A to cancer, heart disease, obesity, reproductive failures and hyperactivity in laboratory animals. Gelman, a retired manufacturer of syringes and medical filtration devices, has fought against government regulation of pollutants for years. He is an anti-regulation activist and an outspoken supporter of organizations such as JunkScience.com, the Cato Institute and the Competitive Enterprise Institute that attack the credibility of government and academic scientists on such topics as global warming and hazardous chemicals.
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Mobile phones, Wi-Fi systems, electric power lines and similar sources of "electrosmog" are disrupting nature on a massive scale, causing birds and bees to lose their bearings, fail to reproduce and die. Dr Ulrich Warnke – who has been researching the effects of man-made electrical fields on wildlife for more than 30 years – [says] that the world's natural electrical and magnetic fields have had a "decisive hand in the evolution of species". Over millions of years they learned to use them to work out where they were, the time of day, and the approach of bad weather. Now, he says, "man-made technology has created transmitters which have fundamentally changed the natural electromagnetic energies and forces on the earth's surface. Animals that depend on natural electrical, magnetic and electromagnetic fields for their orientation and navigation are confused by the much stronger and constantly changing artificial fields." His research has shown that bees exposed to the kinds of electrical fields generated by power lines killed each other and their young, while ones exposed to signals in the same range as mobile phones lost much of their homing ability. Studies at the University of Koblenz-Landau, reported in The Independent ... last year, have found bees failed to return to their hives when digital cordless phones were placed in them, while an Austrian survey noted that two-thirds of beekeepers with mobile phone masts within 300 metres had suffered unexplained colony collapse.
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Two vaccines against cervical cancer are being widely used without sufficient evidence about whether they are worth their high cost or even whether they will effectively stop women from getting the disease, two articles in this week’s New England Journal of Medicine conclude. Both vaccines target the human papillomavirus, a common sexually transmitted virus that usually causes no symptoms and is cleared by the immune system, but which can in very rare cases become chronic and cause cervical cancer. The two vaccines, Gardasil by Merck Sharp & Dohme and Cervarix by GlaxoSmithKline, target two strains of the virus that together cause an estimated 70 percent of cervical cancers. “Despite great expectations and promising results of clinical trials, we still lack sufficient evidence of an effective vaccine against cervical cancer,” Dr. Charlotte J. Haug ... wrote in an editorial in Thursday’s issue of The New England Journal. “With so many essential questions still unanswered, there is good reason to be cautious.” The vaccines have been studied for a relatively short period — both were licensed in 2006 and have been studied in clinical trials for at most six and a half years. Researchers have not yet demonstrated how long the immunity will last, or whether eliminating some strains of cancer-causing virus will decrease the body’s natural immunity to other strains. Because cervical cancer develops only after years of chronic infection with HPV, Dr. Haug said there was not yet absolute proof that protection against these two strains of the virus would ultimately reduce rates of cervical cancer.
It's likely that most people have never heard of Gaucho. And no, it's not a South American cowboy. I'm talking about a pesticide. There is increasing reason to believe that Gaucho and other members of a family of highly toxic chemicals -- neonicotinoids -- may be responsible for the deaths of billions of honeybees worldwide. Some scientists believe that these pesticides, which are applied to seeds, travel systemically through the plant and leave residues that contaminate the pollen, resulting in bee death or paralysis. The French refer to the effect as "mad bee disease" and in 1999 were the first to ban the use of these chemicals, which are currently only marketed by Bayer (the aspirin people) under the trade names Gaucho and Pancho. Germany followed suit this year. So why did the U.S. Environmental Protection Agency in 2002 grant an "emergency" exemption allowing increased use of Gaucho -- typically invoked during a major infestation -- when only a few beetles were found in blueberries? Why did the agency also grant a "conditional" registration for its close relative, Pancho, allowing the chemical on the market with only partial testing? And why is the agency, hiding behind a curtain of "trade secrets," still refusing to disclose whether the additional tests required of companies in such cases were conducted and, if so, with what results? [Pesticides] are regulated ...- under the antiquated Federal Insecticide, Fungicide and Rodenticide Act. This law allows a chemical on the market unless it's proved to pose "an unreasonable risk," far too weak a standard.
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The head of a prominent cancer research institute issued an unprecedented warning to his faculty and staff: Limit cell phone use because of the possible risk of cancer. The warning [came] from Dr. Ronald B. Herberman, director of the University of Pittsburgh Cancer Institute. Herberman is basing his alarm on early unpublished data. He says it takes too long to get answers from science and he believes people should take action now — especially when it comes to children. "Really at the heart of my concern is that we shouldn't wait for a definitive study to come out, but err on the side of being safe rather than sorry later," Herberman said. [His] advice is sure to raise concern among many cell phone users and especially parents. In the memo he sent to about 3,000 faculty and staff, he says children should use cell phones only for emergencies because their brains are still developing. Adults should keep the phone away from the head and use the speakerphone or a wireless headset, he says. He even warns against using cell phones in public places like a bus because it exposes others to the phone's electromagnetic fields. Herberman cites a "growing body of literature linking long-term cell phone use to possible adverse health effects including cancer." "Although the evidence is still controversial, I am convinced that there are sufficient data to warrant issuing an advisory to share some precautionary advice on cell phone use," he wrote in his memo.
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Because she was planning to get pregnant, Janelle ... decided last year to go off powerful medication for stress-induced migraines in favor of a more fetus-friendly therapy. With sensors attached to her fingertips, neck, and abdomen, she spent 20 sessions learning to relax her muscles and slow her breathing and heart rate while watching a computer monitor for proof of the desired result. Eventually, she was able to do the work on her own. "The migraine pain doesn't go away completely," says the 39-year-old from Bethesda, Md., who has remained off medication since her son's birth two months ago. "But it's been greatly reduced, and I'm able to deal with it better." Like meditation and yoga, the biofeedback method that Janelle now swears by is enjoying a sort of renaissance; while it's been around for some 40 years, a growing body of research has brought it to the mainstream, indicating that it can relieve some hard-to-manage conditions exacerbated by stress. Many major hospitals and clinics, including Harvard's Brigham and Women's Hospital and Duke University Medical Center, now offer biofeedback to people with hypertension and jaw pain as well as headaches, for example. Biofeedback's major appeal is that one series of sessions purportedly teaches a set of skills you can use for life–without side effects. And it's pre-emptive. "Biofeedback teaches you to identify early signs that stress is starting to get to you and to bring that stress reaction down before it causes physical symptoms," explains Frank Andrasik, a professor of psychology at the University of West Florida in Pensacola.
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Amalgam or 'silver' dental fillings contain mercury which may have neurotoxic effects on the nervous systems of developing children and fetuses, according to the U.S. Food and Drug Administration. "Pregnant women and persons who may have a health condition that makes them more sensitive to mercury exposure, including individuals with existing high levels of mercury bioburden, should not avoid seeking dental care, but should discuss options with their health practitioner," the agency said in the udpated "Question and Answer" fact sheet about dental amalgams. The FDA will issue a more specific rule next year for fillings that contain mercury, FDA spokeswoman Peper Long [said]. Dental amalgam, which is made up of liquid mercury and a powder containing silver, tin, copper, zinc and other metals, has long been used to fill or restore teeth that have cavities. The mercury concentration in dental amalgams is generally about 50 percent by weight, while the silver concentration ranges from 20 to 35 percent, according to the FDA.
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Silver-colored metal dental fillings contain mercury that may cause health problems in pregnant women, children and fetuses, the Food and Drug Administration said, after settling a related lawsuit. As part of the settlement with several consumer advocacy groups, the FDA agreed to alert consumers about the potential risks ... and to issue a more specific rule next year for fillings that contain mercury. "Dental amalgams contain mercury, which may have neurotoxic effects on the nervous systems of developing children and fetuses," the FDA said. "Pregnant women and persons who may have a health condition that makes them more sensitive to mercury exposure, including individuals with existing high levels of mercury bioburden, should not avoid seeking dental care, but should discuss options with their health practitioner," the agency said. The lawsuit settlement was reached ... with several advocacy groups, including Moms Against Mercury, which had sought to have mercury fillings removed from the U.S. market. Some consumer groups contend the fillings can trigger a range of health problems such as multiple sclerosis and Alzheimer's disease. Mercury has been linked to brain and kidney damage at certain levels. Amalgams contain half mercury and half a combination of other metals. Charles Brown, a lawyer for one of the groups called Consumers for Dental Choice, said the agency's move represented an about-face. "Gone, gone, gone are all of FDA's claims that no science exists that amalgam is unsafe," he said.
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What do brain surgeons know about cellphone safety that the rest of us don’t? Last week, three prominent neurosurgeons told the CNN interviewer Larry King that they did not hold cellphones next to their ears. “I think the safe practice,” said Dr. Keith Black, a surgeon at Cedars-Sinai Medical Center in Los Angeles, “is to use an earpiece so you keep the microwave antenna away from your brain.” Dr. Vini Khurana, an associate professor of neurosurgery at the Australian National University who is an outspoken critic of cellphones, said: “I use it on the speaker-phone mode. I do not hold it to my ear.” And CNN’s chief medical correspondent, Dr. Sanjay Gupta, a neurosurgeon at Emory University Hospital, said that like Dr. Black he used an earpiece. In recent studies that suggest a risk, ... tumors tend to occur on the same side of the head where the patient typically holds the phone. The most important of these studies is called Interphone, a vast research effort in 13 countries, including Canada, Israel and several in Europe. Some of the research suggests a link between cellphone use and three types of tumors: glioma; cancer of the parotid, a salivary gland near the ear; and acoustic neuroma, a tumor that essentially occurs where the ear meets the brain. Last year, The American Journal of Epidemiology published data from Israel finding a 58 percent higher risk of parotid gland tumors among heavy cellphone users. Also last year, a Swedish analysis of 16 studies in the journal Occupational and Environmental Medicine showed a doubling of risk for acoustic neuroma and glioma after 10 years of heavy cellphone use.
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Germany has banned a family of pesticides that are blamed for the deaths of millions of honeybees. The German Federal Office of Consumer Protection and Food Safety (BVL) has suspended the registration for eight pesticide seed treatment products used in rapeseed oil and sweetcorn. The move follows reports from German beekeepers in the Baden-Württemberg region that two thirds of their bees died earlier this month following the application of a pesticide called clothianidin. "It's a real bee emergency," said Manfred Hederer, president of the German Professional Beekeepers' Association. "50-60% of the bees have died on average and some beekeepers have lost all their hives." Tests on dead bees showed that 99% of those examined had a build-up of clothianidin. The chemical, produced by Bayer CropScience, a subsidiary of the German chemical giant Bayer, is sold in Europe under the trade name Poncho. It was applied to the seeds of sweetcorn planted along the Rhine this spring. The seeds are treated in advance of being planted or are sprayed while in the field. Clothianidin, like the other neonicotinoid pesticides that have been temporarily suspended in Germany, is a systemic chemical that works its way through a plant and attacks the nervous system of any insect it comes into contact with. According to the US Environmental Protection Agency it is "highly toxic" to honeybees.
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Dr. Frank Artress looked down at his fingers. His nail beds were turning blue. He was running out of oxygen near the summit of Mount Kilimanjaro. A cardiac anesthesiologist, Artress knew the signs of high altitude pulmonary edema. He knew there was a 75 percent chance that he would perish on Africa's highest peak. Artress led his wife to a rock, and they sat together above the clouds. Then it hit him. He wasn't afraid to die; he was ashamed. He had lived only for himself - practicing medicine in a Modesto hospital, traveling with his wife, purchasing luxury vacation homes and collecting art. He felt as if he had nothing to show for his 50 years. He felt as if his life had been a waste. In that moment, Artress and his wife realized they were living for the wrong reasons. In that moment, everything changed. Some people dream of giving up the trappings of success and starting life anew, with a purpose, with a social conscience. For Artress and his wife, the idea suddenly seemed real. That day on Mount Kilimanjaro would lead the Modesto doctor and his wife to leave their comfortable life in California to become bush doctors, dedicated to easing the heartbreak of Africa. They knew their decision was the right one when they returned to their creekside ranch home in Modesto. The things they normally missed when they were away - the matching silver sports cars, the signed Mirós and Picassos, the full-throttle espresso machine and the swimming pool - no longer had any charm. That week, Artress quit his job at Doctors Medical Center in Modesto and Gustafson gave notice as an educational psychologist for the public schools. Then they sold everything ... and made plans to return to the foot of Kilimanjaro to administer medical care as a way of repaying the community that saved Artress' life.
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The Bush administration is undermining the Environmental Protection Agency's ability to determine health dangers of toxic chemicals by letting nonscientists have a bigger -- often secret -- say, congressional investigators say in a report obtained by The Associated Press. The administration's decision to give the Defense Department and other agencies an early role in the process adds to years of delay in acting on harmful chemicals and jeopardizes the program's credibility, the Government Accountability Office concluded. At issue is the EPA's screening of chemicals used in everything from household products to rocket fuel to determine if they pose serious risk of cancer or other illnesses. A new review process begun by the White House in 2004 is adding more speed bumps for EPA scientists, the GAO said in its report. A formal policy effectively doubling the number of steps was adopted two weeks ago. Cancer risk assessments for nearly a dozen major chemicals are now years overdue, the GAO said, blaming the new multiagency reviews for some of the delay. GAO investigators said extensive involvement by EPA managers, White House budget officials and other agencies has eroded the independence of EPA scientists charged with determining the health risks posed by chemicals. The Pentagon, the Energy Department, NASA and other agencies -- all of which could be severely affected by EPA risk findings -- are being allowed to participate "at almost every step in the assessment process," said the GAO. Those agencies, their private contractors and manufacturers of the chemicals face restrictions and major cleanup requirements, depending on the EPA's scientific determinations.
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Government health officials have conceded that childhood vaccines worsened a rare, underlying disorder that ultimately led to autism-like symptoms in a Georgia girl, and that she should be paid from a federal vaccine-injury fund. Thousands of families are seeking compensation for disabilities they attribute to vaccines and a preservative. Medical and legal experts say the narrow wording and circumstances probably make the case an exception -- not a precedent for thousands of other pending claims. However, parents and advocates for autistic children see the case as a victory that may help certain others. Although the science on this is very limited, the girl's disorder may be more common in children with autism than in healthy ones. "It's a beginning," said Kevin Conway, a Boston, Massachusetts, lawyer representing more than 1,200 families with vaccine injury claims. "Each case is going to have to be proved on its individual merits. But it shows to me that the government has conceded that it's biologically plausible for a vaccine to cause these injuries. They've never done it before." Nearly 5,000 families are seeking compensation for autism or other developmental disabilities they say are caused by vaccines and a mercury-based preservative, thimerosal. It once was commonly used to prevent bacterial contamination but since 2001 has been used only in certain flu shots. Some cases contend that the cumulative effect of many shots given at once may have caused injuries. The cases are before a special "vaccine court" that doles out cash from a fund Congress set up to pay people injured by vaccines and to protect makers from damages as a way to help ensure an adequate vaccine supply.
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Today, some scientists think [that] germs can teach our bodies how to fight back against tumors. Dr. John Timmerman, a cancer immunotherapy expert at UCLA's Jonsson Cancer Center, says this revolution has produced "the most exciting sets of compounds in cancer immunology." New studies are revealing that certain cancers may be reduced by exposure to disease-causing bacteria and viruses. The studies also imply that our cleaner, infection-free lifestyles may be contributing to the rise in certain cancers over the last 50 years, scientists say, because they make the immune system weaker or less mature. Germs cause disease but may also fortify the body, a notion summed up in a 2006 report by a team of Canadian researchers as "whatever does not kill me makes me stronger." In the 1980s, dermatologists began noticing that patients with severe acne, which is caused by another type of bacterium, have reduced rates of skin cancer, lymphoma and leukemia. According to a paper by Dr. Mohammad Namazi at the Shiraz University of Medical Sciences in Iran, studies showed that these bacteria, when injected into animals, appear to stimulate the immune system and shrink tumors. In reports published in the last two years, Harvey Checkoway, a University of Washington epidemiologist, has found that female cotton workers in Shanghai have a 40% to 60% lower risk of lung, breast, and pancreas cancer than other factory workers. Other recent studies by Giuseppe Mastrangelo at the University of Padua in Italy found that dairy farmers exposed to high levels of manure dust are up to five times less likely to develop lung cancer than their colleagues who work in open fields.
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As a U.S. taxpayer, you may be contributing to fewer cheap drugs on international shelves. Public dollars support the Office of the U.S. Trade Representative, the trade agency with authority to pressure foreign governments to change their domestic intellectual property laws. As such, the agency actively presses for laws that would keep generic drugs out of markets worldwide. Congress is considering legislation to create a separate executive branch office dedicated to using government resources for lobbying other countries to change their laws, sometimes exclusively to benefit certain U.S. companies. That's a bad idea for patients here and abroad, because it would give the U.S. government more power in an area where it should instead have less. The trade agency's interpretation of what other countries' domestic laws need to cover expands beyond the broadest definitions within U.S. law. To give one example, data gathered during clinical trials of new drugs are not protected by copyright, patent or trademark in the United States. The Food and Drug Administration restricts use of test results finding that a brand-name drug is safe when considering the safety of identical generic drugs. The trade representative is using its authority to press for comparable rules restricting the approval process for generic drugs in other countries. It doesn't take much sleuthing to follow the money back to the U.S. pharmaceutical manufacturers on the trade agency's advisory panel, who can maintain monopolist profits while a generic drug is blocked from the market in Guatemala, Malaysia or any of the dozen other countries that the trade agency is pressuring to adopt U.S.-style restrictions on generic drug approval.
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As they seek to document and demystify one of life's great thrills, scientists have run across some real head-scratchers. How, for example, can they explain the fact that some men and women who are paralyzed and numb below the waist are able to have orgasms? How to explain the "orgasmic auras" that can descend at the onset of epileptic seizures -- sensations so pleasurable they prompt some patients to refuse antiseizure medication? And how on Earth to explain the case of the amputee who felt his orgasms centered in that missing foot? No one -- no sexologist, no neuroscientist -- really knows. For a subject with so many armchair experts, the human orgasm is remarkably mysterious. But today, a few scientists are making real progress -- in part because they're changing their focus. To uncover the orgasm's secrets, researchers are looking ... to the place behind the scenes where the true magic happens. They're examining the central nervous system: the network of electrical impulses that zip to and fro through the brain and spinal cord. In an orgasm orchestra, the genitalia may be the instruments, but the central nervous system is the conductor. Armed with new lab tools and fearless volunteers, scientists are getting first-ever glimpses of how the brain lights up (and, in places, shuts down) when the orgasmic fireworks go off. They're tracing nerves and finding new pathways for pleasure that help explain how people with shattered spinal cords can defy sexual expectations.
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