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Study Of More Than 3,500 Human Brains Reveals The Cause Of Alzheimer's Disease. After examining more than 3,500 donated brains, scientists have gathered evidence to suggest that a rogue protein, tau, which has long been suspected to play a role in the development of Alzheimer’s, is the major driver of cognitive decline in this disease.

Study Of More Than 3,500 Human Brains Reveals The Cause Of Alzheimer's Disease

These new findings downplay the role of amyloid, another dysfunctional protein that builds up as the condition progresses and has been the focus of much Alzheimer’s research. Although this discovery does not mean that the debate over which protein is the biggest contributor to disease progression is over, it does have implications for future research, and the scientists suggest that therapeutics should now focus on tackling tau, rather than amyloid. The study has been published in Brain. Alzheimer’s, the most common form of dementia, is a chronic neurodegenerative disease characterized by a progressive loss of brain tissue with a concomitant accumulation of two proteins: amyloid-β and tau. Untitled. Should We All Be In 'Monogamish' Relationships? There’s an argument brewing that says monogamy is not best for a successful relationship.

Should We All Be In 'Monogamish' Relationships?

But is there any science behind it? (Photo: Getty Images) Chris Messina invented the hashtag. Autism and Air Pollution: New Study Bolsters Suspected Link. Pregnant women may nearly double their risk of giving birth to a child with autism by inhaling smog spewed by vehicles or smoke stacks, according to a new Harvard study that could help unlock the deepest autism mysteries.

Autism and Air Pollution: New Study Bolsters Suspected Link

The research, released Thursday, fortifies previous scientific findings that linked air pollution to autism. The association between discontinuing hormonal contraceptives and wives’ marital satisfaction depends on husbands’ facial attractiveness. Author Affiliations Edited by Steven J.

The association between discontinuing hormonal contraceptives and wives’ marital satisfaction depends on husbands’ facial attractiveness

C. Gaulin, University of California, Santa Barbara, CA, and accepted by the Editorial Board October 16, 2014 (received for review August 1, 2014) Researchers make blood vessels grow by shining a light on skin. Any fan of Star Trek knows that simply shining light on an injury will heal many wounds in the future.

Researchers make blood vessels grow by shining a light on skin

Now scientists have brought that future a bit closer. In a new study, researchers have found a way to stimulate the growth of blood vessels—an important part of healing—by hitting the skin with ultraviolet light. In the past decade, scientists have used light to manipulate the chemistry of cells in a dish—but they’ve struggled to do the same in living organisms. “There are hundreds of different types of cells; you have a lot more other biological molecules present,” says bioengineer Andrés García of the Georgia Institute of Technology in Atlanta. So García and colleagues turned to a water-based gel, or hydrogel, impregnated with a molecule called RGD peptide. Marijuana And Cancer: Scientists Find Cannabis Compound Stops Metastasis In Aggressive Cancers. A pair of scientists at California Pacific Medical Center in San Francisco has found that a compound derived from marijuana could stop metastasis in many kinds of aggressive cancer, potentially altering the fatality of the disease forever.

Marijuana And Cancer: Scientists Find Cannabis Compound Stops Metastasis In Aggressive Cancers

"It took us about 20 years of research to figure this out, but we are very excited," said Pierre Desprez, one of the scientists behind the discovery, to The Huffington Post. "We want to get started with trials as soon as possible. " The Daily Beast first reported on the finding, which has already undergone both laboratory and animal testing, and is awaiting permission for clinical trials in humans. Desprez, a molecular biologist, spent decades studying ID-1, the gene that causes cancer to spread. Meanwhile, fellow researcher Sean McAllister was studying the effects of Cannabidiol, or CBD, a non-toxic, non-psychoactive chemical compound found in the cannabis plant. Paul Ryan’s budget flimflam. By Editorial Board October 1, 2012 PAUL RYAN wants to tell you about the wonders of the 20 percent cut in tax rates that he and running mate Mitt Romney propose.

Money in the House elections, in 8 charts. This post was prepared in collaboration with Alexander Furnas and Alex Engler.

Money in the House elections, in 8 charts

With just over a month before the election, the general consensus is that Democrats will have a tough time picking up the 25 seats they need to win back the house, despite some protestations. But when it comes to the money, Republicans appear to be in solid shape. Jon Stewart Rails Against Fox News' Hypocritical Coverage Of School Lunch Changes. On Thursday night's "Daily Show," Jon Stewart did not hold back his feelings about Fox News' vilification of Michelle Obama for -- dun dun dun -- encouraging children to eat healthier.

Jon Stewart Rails Against Fox News' Hypocritical Coverage Of School Lunch Changes

The First Lady has made curbing childhood obesity her pet cause during her time in the White House, and part of that agenda included the USDA updating public school cafeteria recommendations to include (slightly) healthier options. Cue the Fox News outrage, because, why not attack each and every thing the Obamas do? Jon wasn't about to let Fox's pundits off the hook. "Why is this news?! " he rhetorically asked. 63,000-Year-Old Modern Human Skull Found in Laos. According to an international team of anthropologists, an ancient skull collected from a cave in the Annamite Mountains in northern Laos is the oldest modern human fossil found in Southeast Asia.

63,000-Year-Old Modern Human Skull Found in Laos

The skull pushes back the clock on modern human migration through the region by as much as 20,000 years and indicates that ancient humans out of Africa left the coast and inhabited diverse habitats much earlier than previously appreciated. The scientists, who found the skull in 2009, were likely the first to dig for ancient bones in Laos since the early 1900s, when a team found 16,000-year-old skulls and skeletons of several modern humans in another cave in the Annamite Mountains. “It’s a particularly old modern human fossil and it’s also a particularly old modern human for that region,” said Dr Laura Shackelford, anthropologist at the University of Illinois and co-author of the study published in the Proceedings of the National Academy of Sciences. Bibliographic information: Demeter et al. 2012. Greek police send crime victims to neo-Nazi 'protectors'

Greece's far-right Golden Dawn party is increasingly assuming the role of law enforcement officers on the streets of the bankrupt country, with mounting evidence that Athenians are being openly directed by police to seek help from the neo-Nazi group, analysts, activists and lawyers say.

Greek police send crime victims to neo-Nazi 'protectors'

In return, a growing number of Greek crime victims have come to see the party, whose symbol bears an uncanny resemblance to the swastika, as a "protector". One victim of crime, an eloquent US-trained civil servant, told the Guardian of her family's shock at being referred to the party when her mother recently called the police following an incident involving Albanian immigrants in their downtown apartment block. "They immediately said if it's an issue with immigrants go to Golden Dawn," said the 38-year-old, who fearing for her job and safety, spoke only on condition of anonymity. Far from being tamed, parliamentary legitimacy appears only to have emboldened the extremists. Is Sitting Killing Me? Autism-Pesticide Link Found in Calif. Study. A California study out Monday found that pregnant women who live near farms where pesticides are applied had a two-thirds higher risk of having children with autism. The findings in the journal Environmental Health Perspectives examine the association between living near commercial pesticide applications and having offspring with autism, but do not show cause-and-effect.

Autism is a neurodevelopmental disorder that ranges in severity and has been on the rise in recent years. Health authorities say it now affects as many as one in 68 children in the United States. Autism Diagnoses in US Kids Jump 30 Percent. Spinal cord research offers unexpected hope to people with paralysis. Susan Harkema was sending electricity down broken spinal cord to study nerve pathwaysShe was the one who got a shock when her patient called out: "I can move my toe! "Harkema: First time stimulation directly to spinal cord has shown voluntary activityTechnique is another piece of the puzzle toward helping paralyzed people walk again.

Being gay may be in the DNA, researchers say. Researchers say they’ve found more DNA evidence that possibly shows gay men don’t have a choice — that their biological makeup drives them to homosexuality. In a study at Chicago University, researchers looked at DNA chains of 400-plus pairs of gay brothers and found what they said were two distinct bits of genetic material that they claim are linked to homosexuality, The Daily Mail reported.

The gay brothers were identified and recruited to help with the study over the course of several years’ worth of Gay Pride festivals and marches. The research was highlighted during the recent annual American Association for the Advancement of Science conference. Researchers don’t know which of the specific genes in the two links of DNA are key to the formation and development of sexual orientation, The Daily Mail reported. Still, researchers are saying this latest DNA evidence is ground-breaking and significant. Dr. Are Happy Gut Bacteria Key to Weight Loss? A cluster of Enterobacter cloacae bacteria Eye of Science / Science Source Most of our microbes inhabit the colon, the final loop of intestine, where they help us break down fibers, harvest calories, and protect us from micro-marauders.

But they also do much, much more. Middle-Aged Men, Too, Can Blame Estrogen for That Waistline. Bacterial toxins cause deadly heart disease: Superantigens produced by staph bacteria are required for deadly effects of infective endocarditis and sepsis. University of Iowa researchers have discovered what causes the lethal effects of staphylococcal infective endocarditis -- a serious bacterial infection of heart valves that kills approximately 20,000 Americans each year. PTSD may be prevented, researchers find. New source for regenerative stem cells? Your fat, study suggests. Eggs, Too, May Provoke Bacteria to Raise Heart Risk. Scientists Find Achilles’ Heel of Cancer Cells. No. 56 | 05/11/2012 | by Koh Scientists from the German Cancer Research Center (Deutsches Krebsforschungszentrum) and Heidelberg University Hospital have identified the HDAC11 enzyme as a promising target for new cancer therapies.

Scientists create road map to metabolic reprogramming for aging (Nov. 29. Nov. 29, 2012 In efforts to understand what influences life span, cancer and aging, scientists are building road maps to navigate and learn about cells at the molecular level. Age-related dementia may begin with neurons' inability to rid themselves of unwanted proteins. Being Overweight Is Linked to Lower Risk of Mortality. Fructose Linked To Overeating, Obesity In New Brain Imaging Study. -- This is your brain on sugar – for real. Scientists have used imaging tests to show for the first time that fructose, a sugar that saturates the American diet, can trigger brain changes that may lead to overeating. How Dark Chocolate May Guard Against Brain Injury From Stroke - 05/05/2010. May 5, 2010- Researchers at Johns Hopkins have discovered that a compound in dark chocolate may protect the brain after a stroke by increasing cellular signals already known to shield nerve cells from damage. Scientists create 'endless supply' of myelin-forming cells.

In a new study appearing this month in the Journal of Neuroscience, researchers have unlocked the complex cellular mechanics that instruct specific brain cells to continue to divide. Canadian scientists discover cause of high cholesterol. Researchers Reveal the Key element related to the activation of Brown Adipocytes. Breakthrough made in developing antibodies against HIV. Cannabis eases multiple sclerosis (MS) stiffness per study published in neurology journal. Scientists make old muscles young again in attempt to combat aging.

Part Man, All Woman: Scientists Find Male DNA in Women's Brains. Skin cancer detection breakthrough. Scientists Find Enzyme That Kills Alzheimer's Protein. Scientists discover how an out-of-tune protein leads to heart muscle failure. Chronic Pain May Depend on Emotional Reaction to Injury. MIT discovers the location of memories: Individual neurons. Scientists Turn Skin Cells Into Cardiac Cells to Help Failing Hearts. Breastfeeding linked to healthy infant gut: Bacterial colonization leads to changes in the infant’s expression of genes. Researchers Find an Epigenetic Culprit of Memory Decline - HDAC2 enzyme. Researchers find new evidence on how cholesterol gets moved from HDLs to LDLs. Alzheimer's brain plaques 'rapidly cleared' in mice. How Your Cat Is Making You Crazy - Magazine. Scientists in Scotland use skin samples to create human brain cells.

Scientists reveal how females store sperm for decades. ‘Foldit’ Gamers Solve AIDS Puzzle that Baffled Scientists for Decade. Common Cause of ALS Discovered. New drug could cure nearly any viral infection. Scientists find cure for rotting food. Using super microscope scientists find body’s immunity “switch” Healthy sex life makes men live longer. Smoking Damages DNA Within Minutes, Research Shows. Autism researchers find scores of gene mutations.