The study showed that chemicals used for processing of meat products can affect the mental state of the person. It's not entirely clear why, but more and more research is showing that the bacteria that live in and on our bodies affect health in profound ways.
Kellie Tamashiro, Ph.D., associate professor of psychiatry and behavioral sciences, and M.D./Ph.D. student Seva Khambadkone, both of Johns Hopkins, and others divided a group of otherwise healthy rats into two groups: one received normal rat chow, and the other received both normal chow and a piece of store-bought, nitrate-prepared beef jerky every other day.
Although genetic and other risk factors have been associated with manic episodes that characterise bipolar disorder, they were not able to explain the cause behind the mental illness.
Lead author Robert Yolken, of the Johns Hopkins University School of Medicine, said: "We looked at a number of different dietary exposures and cured meat really stood out".
Meat sticks and jerky are popular snacks in the U.S., and less so in the United Kingdom, however nitrates are used here as preservatives for a minority of sausages and may also be in bacon and burgers. In addition, he worked with a jerky manufacturer to develop a nitrate-free jerky, and when he fed animals this jerky, they did not develop hyperactivity or sleep disturbances - although the rats fed commercial jerky with nitrates (in the amount that would be found in a beef jerky stick or hot dog), did.
The study does not prove nitrates cause mania, but that there is an association between consuming nitrates and mania when it does exist.
Pompeo Warns Against Easing Pressure on North Korea
He added that China will "fully implement" United Nations sanctions resolutions, adding that "everyone" else should as well. There is no evidence North Korea has made any concrete moves toward dismantling its nuclear weapons program so far.
To investigate the potential link between environmental exposures and psychiatric conditions, Dr. Yolken's team undertook a study through which they collected demographic, health, and dietary data for 1,101 individuals with and without psychiatric disorders.
The scientists said people hospitalized for mania had about three times the odds of having eaten nitrate-cured meats than others, and rats fed a diet with added nitrates showed symptoms of mania within a few weeks, according to the study. "It wasn't just that people with mania have an abnormal diet", he said.
Mania is characterised by hyperactivity, euphoria and insomnia. These animals also demonstrated changes to hippocampal pathways in the brain that have been implicated in human bipolar disorder, as well as alterations to their intestinal microbiota.
"We believe there may be an interactive effect between nitrates and some other component in meat", the researchers said.
Chemicals used to cure meats like salami and hot dogs may be linked to a mood disorder called mania, researchers report.
"In individuals at low risk for these disorders due to their genetic backgrounds, medical histories and socioeconomical risk loads, it is conceivable that consumption of nitrate-prepared processed meat may result in physiological changes, but that these changes may not be severe enough to result in measurable functional consequences", they concluded.
However, a deal has not been agreed and Real Madrid could move onto other targets, which would be a massive boost to Chelsea . Hazard is ready to make the move to Real Madrid , but the Spanish giants must find an agreement with Chelsea .
Trump also called Powell, who he appointed to succeed Janet Yellen, "a very good man". "Tightening now hurts all that we've done". The US should be allowed to recapture what was lost due to illegal currency manipulation and BAD Trade Deals.
US officials have been mum on what, if anything, the two leaders agreed to in Helsinki during a two-hour, one-on-one meeting. When pressed by Alexander, she said she agreed with the intelligence community's assessment " full stop ".
Dumoulin, who is the world champion time trialist, wants to sort out the race in the mountains starting Tuesday. Froome and Dumoulin both competed at the Giro d'Italia in May, finishing first and second respectively.
Another official said aides thought a proper procedure had been put in place for Helsinki, but it did not work out. The White House had earlier said it would consider the proposal, which Mr Trump called a "tremendous" gesture.
Sarasota , Fla . - Health officials say a man died from a bacterial infection after eating a bad oyster in Sarasota last week. These bacteria thrive in warm, salty water, which is why infections tend to happen more in the summer .
During that tour, Comey declared the Republican Party "left me" and stated he no longer wanted to be associated with the GOP . Comey who has been a registered Republican for most of his adult life, sent out this tweet after U.S.
Novichok victim Charlie Rowley has been discharged from hospital, three weeks after being exposed to the nerve agent. He said his brother's recollection of the day is "very vague", but that he had told him some details.
The package consists of a red PS4 Pro console with a 1TB internal storage and bearing the Spider-Man design. From today, it's possible to pre-order the limited edition version of Sony's most powerful games console.
He described the film's central divide as one between muggles and wizards, with even wizards asked to choose a side. Depp's continued casting in this movie has been the source of some... let's say controversy lately.
And, of course, you are 100 percent within your rights to call the police or ask someone else to do it for you. One of the girl's co-workers then called the Savannah Police Department who sent an officer to the restaurant.
Zuckerberg said that as long as posts are not calling for harm or violence, even offensive content should be protected. Facebook has been under scrutiny for its role in letting " fake news " and hate speech exist on its platform.
GST rates slashed on 50 items..
A new set of simpler return filing forms - Sahaj and Sugam - are also in the works that would be finalised soon, Goyal said. In a boost for the textile industry, unclaimed input tax credit will henceforth be refunded to firms.
These balloons will bring Internet access to Kenya
In this case, Telkom Kenya beams wireless internet signals to a Loon balloon, which works as a relay across an area below it. The announcement comes just a week after Loon graduated from Alphabet's secretive "moonshot factory" known as X.
Leicester City sign Danny Ward from Liverpool
Ward insists he is now looking to kick on at the King Power Stadium and also taste success during his time at the club. He obviously hates YOUR football team and has no interest in synchronised swimming.
White House: Security Focus for Next Trump-Putin Meeting
The two leaders later held a press conference, in which Trump was asked about the findings of the U.S. intelligence services. Mr Antonov said he had not seen Mr Trump's invitation himself, but added that " Russia was always open to such proposals".
Novartis freezes drug prices in a nod to Trump
The company will drop the price of Zepatier, a Hepatitis C drug, by 60%, and decrease the costs of "several other" drugs by 10%. We are making a big push to actually reduce the prices, maybe substantially, on prescription drugs", Trump said in a tweet.
Tornadoes in Iowa injure 17, destroy buildings
On Thursday, National Weather Service meteorologist Rod Donavon said two primary storms spawned the series of tornadoes. The emergency room in the smaller Marshalltown hospital remained open to treat patients, Varcoe said.
STAR TREK: DISCOVERY Casts REBECCA ROMIJN as NUMBER ONE
Led by Sonequa Martin-Green's Michael Burnham, the trailer shows the unified cast voyaging where no one has gone before. It's official! Everyone's favorite intrepid Vulcan will be appearing in Star Trek: Discovery Season 2.