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Ancient DNA Could Explain Your Craving for Bread and Chips

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Your love for carbs like bread and chips might have deep roots in ancient DNA, according to new research.

Humans may have developed the ability to digest starchy foods, like bread and potatoes, long before the dawn of agriculture, and possibly even before diverging from Neanderthals. This is the conclusion of a recent study exploring how humans adapted to carbohydrate-rich diets.

Gene duplication, a type of mutation that results in extra copies of a gene, plays a key role here. For some time, scientists have known that humans carry multiple copies of a gene that begins the digestion of complex carbohydrates—like potatoes, rice, and certain fruits and vegetables—right in the mouth. The more copies of this gene, the better equipped a person is to break down starches.

However, until now, researchers struggled to pinpoint when and how this gene duplication occurred.

Led by the University of Buffalo (UB) and the Jackson Laboratory (JAX), the study found that the salivary amylase gene (AMY1)—which aids in starch digestion—likely duplicated much earlier than previously believed, as far back as 800,000 years ago, well before humans started farming.

Amylase, the enzyme produced by the AMY1 gene, breaks down starch into glucose and even contributes to the flavor of bread.

Professor Omer Gokcumen from UB’s Department of Biological Sciences, one of the lead authors of the study, explained: “The more AMY1 gene copies you have, the more amylase you can produce, which makes you better at digesting starch.”

The research analyzed genomes from 68 ancient human samples, including a 45,000-year-old sample from Siberia, and discovered that even pre-agricultural hunter-gatherers had multiple copies of the AMY1 gene. This means that early humans living across Eurasia were genetically prepared to digest starch-rich foods long before they began cultivating plants.

The study also identified AMY1 gene duplications in Neanderthals and Denisovans, suggesting this genetic change happened well before the human-Neanderthal split.

Kwondo Kim, a lead author from JAX’s Lee Lab, added: “This discovery pushes the origin of the AMY1 gene duplication back to over 800,000 years ago, much earlier than previously thought, and shows how this mutation helped humans adapt to dietary changes as starch consumption increased with new technologies and ways of life.”

New Research Indicates Weight-Loss Medications May Cut Opioid and Alcohol Dependency by Up to 50%

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Recent research suggests that weight-loss medications like Ozempic, produced by Denmark’s Novo Nordisk, may significantly decrease opioid and alcohol dependency rates by as much as 50%. This finding highlights the potential of these medications to offer benefits beyond merely managing weight and diabetes.

The study, published in the scientific journal Addiction, examined data from over 500,000 individuals with histories of either opioid use disorder (OUD) or alcohol use disorder (AUD).

The findings revealed that patients taking GLP-1 and GIP medications experienced a 40% reduction in OUD rates and a 50% decrease in AUD rates. Novo Nordisk’s Wegovy and Ozempic, along with Eli Lilly’s Mounjaro, work by mimicking the effects of the gut hormone GLP-1, which helps regulate blood sugar levels and suppress appetite. Mounjaro additionally targets another hormone, GIP.

Approved in the U.S. and Europe for treating diabetes and obesity, these medications have gained immense popularity, resulting in shortages. According to the study authors, the prescriptions are linked to reduced instances of opioid overdoses and alcohol intoxication among individuals with OUD and AUD.

The protective benefits of these drugs were found to be consistent across various demographic groups, including those with coexisting Type 2 diabetes and obesity.

This development comes at a time when substance abuse rates are surging in the United States. In 2021, drug overdose fatalities reached 107,000, a staggering increase from the 18,000 reported in 1999. Opioids accounted for over 75% of these deaths in 2021, a trend that has intensified since the introduction of OxyContin by Purdue Pharma in 1996, which was aggressively marketed, making the company and the Sackler family notorious figures in the ongoing crisis.

The researchers emphasized the need for effective treatments for substance use disorders (SUD) like OUD and AUD, which are increasingly prevalent and harmful to public health.

Additionally, GLP-1 medications have shown promise in addressing other health issues. For example, liraglutide, another GLP-1 drug from Novo Nordisk, marketed as Victoza and Saxenda, has been found to potentially slow cognitive decline in patients with mild Alzheimer’s disease by as much as 18% after one year of treatment compared to a placebo, according to research from Imperial College London presented at the Alzheimer’s Association International Conference in Philadelphia.

In April, Eli Lilly announced that two late-stage trials assessing a 10 mg or 15 mg injection of Zepbound, aimed at weight loss, demonstrated up to a two-thirds reduction in sleep apnea severity among adults with obesity and obstructive sleep apnea.

Further studies are exploring additional applications for these medications, including treatment for fatty liver disease, kidney disease, and heart disease.

On Thursday, Novo Nordisk’s U.S.-traded shares rose by 0.6%, showing a 16% increase year-to-date, while Eli Lilly’s stock also increased by 0.6%, with a remarkable 58% gain this year. In contrast, the S&P 500 has risen by 22%.

Increased Risk of Type 2 Diabetes in Teens Months After COVID-19 Infection

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A recent study involving over 600,000 children and adolescents suggests that teens may face a heightened risk of developing type 2 diabetes following a COVID-19 infection.

The study, conducted by Dr. Pauline Terebuh and her team from Case Western Reserve University, found that adolescents aged 10 to 19 had a 55% increased likelihood of being diagnosed with type 2 diabetes one month after contracting COVID-19, compared to those who had other respiratory infections. This risk remained elevated at three months (48% higher) and six months (58% higher) after infection, according to findings published in JAMA Network Open.

“Youth diagnosed with diabetes will bear the consequences for years, facing complications and increased medical costs,” Dr. Terebuh told MedPage Today, stressing the importance of addressing all potential factors contributing to this concerning trend, including COVID-19 and rising rates of obesity.

There is growing evidence that COVID-19, now considered endemic, may impact pancreatic β cells, potentially leading to impaired insulin production. While type 2 diabetes is typically linked to insulin resistance, the researchers noted that in newly diagnosed patients, the cause could involve more complex mechanisms, possibly triggered by the viral infection.

This study adds to a growing body of research on the link between COVID-19 and diabetes in youth, though earlier studies primarily focused on type 1 diabetes. The pandemic also brought significant lifestyle changes for young people, from altered food access to reduced physical activity, and elevated stress levels, which may have contributed to the rise in diabetes diagnoses.

The study analyzed electronic health records of 613,602 patients, half of whom were diagnosed with COVID-19 between January 2020 and December 2022. None had a prior diagnosis of diabetes. The data showed that in adolescents with a body mass index (BMI) indicating overweight or obesity, the risk of developing type 2 diabetes after COVID-19 was even higher:

  • 1 month post-infection: Risk was double compared to those with other respiratory infections.
  • 3 months post-infection: Risk remained nearly double.
  • 6 months post-infection: Risk was more than twice as high.

Furthermore, teens who were hospitalized within a month of their COVID-19 diagnosis were at the highest risk of developing type 2 diabetes:

  • 1 month post-hospitalization: Risk was over three times higher.
  • 3 months post-hospitalization: Risk was almost three times higher.
  • 6 months post-hospitalization: Risk remained more than twice as high.

The researchers acknowledged that some of the diabetes diagnoses may have predated the COVID-19 infection but were only discovered during the medical encounter. It is also possible that some patients only experienced temporary hyperglycemia due to the metabolic stress from the infection. Additional follow-up would be needed to confirm whether these patients meet the diagnostic criteria for type 2 diabetes long-term.

Other limitations of the study included the inability to account for variables such as vaccination status, socioeconomic factors, BMI, and insulin resistance. Researchers also did not control for treatments specific to obesity, which could have influenced the outcomes.

Dr. Terebuh and her team emphasized the importance of continued research into new treatments for both diabetes and obesity, such as GLP-1 receptor antagonists, which may play a role in managing this emerging health challenge.

Election Updates: Harris Campaigns in Wisconsin, Trump Addresses Al Smith Dinner

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Vice President Kamala Harris criticized former President Donald Trump for describing the events of January 6 as a “day of love” during his keynote speech at a charity dinner in Manhattan.

Harris visited Wisconsin for the sixth time since stepping in as the Democratic presidential candidate following President Biden’s withdrawal. Her visit included three stops, culminating in a rally near Green Bay’s Lambeau Field, underscoring the importance of mobilizing voters in the final stretch before Election Day.

At the rally, Harris sharply criticized Trump’s attempts to revise the narrative of January 6, 2021, portraying the insurrection as a mostly peaceful event. She also poked fun at Trump’s recent claim that he was “the father of I.V.F.” Earlier in the day, upon learning of the death of Hamas leader Yahya Sinwar, Harris commented that it “provides an opportunity to end the conflict in Gaza,” adding, “justice has been served.”

Meanwhile, Nevada’s sole Senate debate for the 2024 race has concluded. The debate was generally low-key, but the most heated exchange occurred during a discussion on abortion. Senator Jacky Rosen claimed that Sam Brown supported a nationwide abortion ban, which he denied. Brown also shared a personal story about his wife’s abortion and affirmed his support for Nevada’s law permitting abortion up to 24 weeks. Rosen shot back, saying, “If you don’t think he’d back a nationwide abortion ban, I’ve got oceanfront property to sell you on the Las Vegas Strip.”

Halfway through the debate, the candidates addressed a range of topics, including housing, inflation, and even U.F.O.s, as the debate took place near Area 51. Both candidates were asked if Congress should investigate the issue further, but neither gave a clear response.

Israeli Military Drone Footage Allegedly Shows Sinwar Moments Before His Death

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On Thursday, the Israeli military released drone footage purportedly showing Yahya Sinwar in a building located in Rafah. The video captures a man, identified by the Israeli military as Sinwar, seated in a chair moments before what the military describes as his “elimination.”

Though the footage has been edited, it appears to show the man, covered in dust, watching the drone for about 20 seconds before tossing an object, possibly a stick, at it. The identity of the individual in the video has not been independently verified by The New York Times.

The setting shown in the video aligns with photographs obtained by The Times, depicting the body of a man who bears a strong resemblance to Sinwar. The room in the drone footage shows new damage, likely from an explosion, visible in the later photos. In those images, the deceased man is seen wearing a green kaffiyeh similar to the one worn by the man in the video.

This location is on the second floor of a residential building in Rafah’s Tel al-Sultan neighborhood in southern Gaza. Earlier the same day, the Israeli military released additional footage showing Israeli soldiers in the area following Sinwar’s death. The Times confirmed that this footage was recorded near the same house in northern Rafah.

Recently, Israeli military operations in the Rafah neighborhood have increased. Footage from September shows soldiers patrolling the area from a nearby military outpost, passing by the house where Sinwar was later killed, though it’s unclear if he was inside the building during that earlier patrol.

Fed Governor Waller Urges Caution on Future Rate Cuts Amid Strong Economic Data

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Federal Reserve Governor Christopher Waller has called for a more cautious approach to future interest rate cuts, citing recent data that suggests a still-strong economy.

Speaking at a conference at Stanford University on Monday, Waller highlighted key economic indicators, including employment, income, and growth, as well as persistent inflation, as reasons for the Fed to slow down on cutting rates.

Waller’s remarks follow last month’s 50-basis point rate cut by the Fed. While the central bank shifted its focus from controlling inflation to supporting the labor market, Waller believes the pace of future rate reductions should be tempered.

“Although we don’t want to overreact to this data, I believe it suggests that monetary policy should now proceed with more caution than it did in September,” Waller said.

He referenced the September jobs report, which showed strong employment growth, and noted that inflation remains stubbornly high, with the recent consumer price index slightly exceeding expectations. Waller also pointed to upward revisions in economic growth, with second-quarter GDP at 3% and gross domestic income revised from 1.3% to 3.4%.

“These revisions indicate that the economy is stronger than previously thought, with few signs of a major slowdown,” he added.

Waller emphasized that upcoming data on inflation, labor markets, and overall economic activity would be critical in determining whether the Fed should continue with its current trajectory of rate cuts or adopt a more cautious approach.

His comments come amid growing market expectations for a “no-landing” scenario, where the economy continues to expand without a significant downturn, making it more challenging for the Fed to cut rates while inflation remains elevated.

Traders are closely watching Thursday’s retail sales report for September, which could provide further clues about consumer spending and the broader economic outlook. Currently, markets are pricing in a 25-basis point cut at the Fed’s November meeting, with some chance that rates will remain unchanged. Investors anticipate rate cuts totaling 125 basis points next year.

The Editors: iPhone and iPad app update

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Screenshots of the iPad and iPhone apps

On Tuesday we are releasing an update to the BBC News iPhone and iPad app in the UK designed to make the app faster and more stable, with bigger, better quality images on the home screen.

We are busy doing some research and thinking at the moment about what people are looking for in our News apps in the longer term, but we thought that in the meantime, it was important to fix one or two bugs affecting some users of the existing app and to make it a better, slicker experience overall.

We want to make sure the current app remains a great way to get a quick overview of the top stories across a wide range of subjects, easy-to-scan on a mobile and, once the stories have loaded, handy to read offline too.

So, it will now be quicker to start up the app and to update it, and it should feel smoother and faster as you scroll and swipe through the screens and stories.

The larger homescreen images we’ve introduced serve two purposes:

  • first, you can see what’s in them more clearly and there’s more room for the headline
  • second, their positioning makes it clearer that you can scroll horizontally in each news category to reveal more stories (we noticed that in user testing some people assumed there were only three stories a section).

There is a new layout on iPad when you view the home screen in portrait mode – designed to show more headlines and make it easier to find the stories you’re interested in.

Among the bugs that we’ve fixed is an issue that sometimes caused the app to get stuck when updating, and another where you sometimes saw duplicate stories within a single news category.

For our product team, these improvements required a fairly major reworking of the app’s code. The good news is that they are now working from a more stable base which can be built on with new features and functionality. This revising of our code is something we’ve already done with our Android app, so we’ll now be able to release upgrades simultaneously on both iOS and Android, which are by far the largest mobile platforms for us in terms of users. This latest update is already available internationally.

If you’re a user of the app, or decide to try it out, we hope you’ll like the improvements we’ve made. And as we think about our apps generally and plan our next steps, we’d like to hear about what you’d most like to see in future.

Steve Herrmann is editor of the BBC News website.

The Editors: BBC Arabic and the complexities of the Arab world

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Faris Couri

By Faris Couri, editor of the BBC Arabic Service

It is no secret that recent Arab uprisings have placed enormous burdens on the shoulders of BBC Arabic journalists responsible for reporting news from the region.

Covering the Arab world is not always an easy task – we need to mix sensible caution with a dose of courage in covering political issues that attract so many disputed views among Arabic-speaking audiences.

Our guiding principles are the BBC’s values, its editorial guidelines, its ethical code, which are our reference points to maintain impartial, balanced and accurate reporting.

Across the Arab world – whether it’s Tunisia, Yemen, Egypt or Libya, Bahrain, Syria and Iraq or the many other countries in the region – we know that audiences want access to objective and independent news, far removed from an agenda that favours one party, religion or sect against another. That is why audiences are turning to BBC Arabic.

Last year, our latest figures show that overall audiences to BBC Arabic have risen by more than 17% to a record high of 25.3 million adults weekly. That includes a big surge of 2.9 million in Saudi Arabia and 2.7 million in Egypt, where TV viewers in particular turned to the BBC to better understand the events happening in their own country. Our radio audiences are also holding up despite the reductions in transmission. Online is proving to be more of a challenge, but we are working hard to understand the needs of digital audiences and those for whom social media plays an increasingly important part in their lives.

In 2011, following the fall of the Mubarak leadership, we watched as ordinary Egyptians carried banners saying “Thank you, BBC!” But meeting the high expectation of audiences has a price and sometimes it’s been a heavy one.

March 2011 brought a strong reminder of the risks that our staff face in covering the news – one of our reporters was arrested and tortured by Muammar Gaddafi’s forces during the Libya uprising. In early 2012, our reporter in Yemen was beaten and received death threats from supporters of the outgoing president.

We are also challenged by those who disagree with our coverage. In countries such as Syria and Bahrain, BBC Arabic has been accused of bias.

The criticism comes from opposition and government alike. It may be a valid argument to say that getting criticism from both sides, in the case of Arab world certainly, is an indication of balanced coverage.

On Syria, for example, we had a series of documentaries looking at the civil war from a number of perspectives.

The first one, exploring what it’s like to work for a Syrian television channel that’s the mouthpiece of the government, was the butt of criticism and threats from Syrian opposition quarters. We followed it up with a programme charting a day in the lives of six Syrian women, five of whom were anti-government activists.

In our day-to-day news coverage, presenting a variety of voices from Syria is essential to us. And that is what distinguishes BBC Arabic from many media outlets in the Arab world which promote political views and agendas, and that is what we are determined to keep.

BBC Arabic marked its 75th anniversary in January. Arab politicians and ordinary people have expressed their appreciation of our track record of impartiality and trusted news. I am confident that the coming years will see further achievement on all our platforms – TV, radio and online.

The Editors: BBC World News moves to Broadcasting House

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Moving BBC World News, the BBC’s largest television channel, from west London to New Broadcasting House in the centre of the city is a huge project that has taken years of planning.

Relaunching and rebranding every hour of its 24 hours of output to give audiences around the world a new exciting polished HD product has made that huge project even more challenging.

Hopefully on Monday at 1200 GMT, the hard work of our 100 dedicated staff will give our audiences a bolder, brighter, more engaging look for the channel they trust to give them independent, objective news and analysis from more correspondents, in more locations, than any other international broadcaster.

Meticulous planning began about three years ago – everything from the new look of our studios to bicycle parking. We tested our studio systems – literally to breaking point – then fixed them and began the dual-running piloting that has split our newsroom teams between those keeping us on air back at Television Centre and those training and developing our programmes in our new home.

We’re calling our new location The World’s Newsroom because it truly reflects the world we report. We now work with colleagues from 27 language services who report for us from far flung bureaus and in London, allowing us to celebrate their unique expertise – something no other broadcaster can offer.

Komla Dumor in the new World News studio

We’ll be introducing you to those new colleagues and our new location in special live reports from inside New Broadcasting House and offering enhanced social media access so you can enjoy behind-the-scenes access.

Audiences have also told us they want to engage more with the stories we tell – to feel closer to the issues we report. We’re going to help you “live the story” with us. It’s our new channel ethos.

Our correspondents – expert, brave, tough, determined – live and work where they report, and we want audiences to understand their passion for the stories they cover. So expect a new style of reporting from the field. And we’ll be everywhere for our relaunch with live and exclusive reports planned from Syria, China, the US and Burma to name just a few.

In the studio, trusted and familiar presenters will be sharing the day’s top stories – with a sprinkling of new faces on air. We’ll have a more dynamic look, with robot cameras whizzing around our studios, improved graphics and high definition screens to enhance our ability to explain and analyse. We even have some virtual reality surprises planned.

We’re also developing new long-form programmes, so expect to see new hard-hitting and timely documentary series. There’ll be fresh new editions of favourites such as HARDTalk with Stephen Sackur (our interrogator-in-chief), Click for the latest on tech and Health Check for medical breakthroughs.

BBC World News has come a long way since it launched as a shoestring commercial operation in a backroom at Television Centre more than 20 years ago. Our audiences have grown massively. We’re required viewing from the President’s White House in Washington to the President’s Blue House in Seoul. And in an era when bad mortgages in the US can trigger a global economic meltdown, we know there is a huge appetite for world news delivered fast, accurately and objectively.

We hope you’ll enjoy our new look. And we hope you’ll join us in the world’s newsroom.

Andrew Roy is head of news for BBC World News

BBC – The Editors: Goodbye Ceefax

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Screenshot of Ceefax

 

Ceefax – the BBC’s teletext service – finally ends its long career tonight when it is due to be switched off at 23:30 BST. There is more on this, and the history of the service, in our news story today and linked coverage.

As each part of the UK has in turn gone through the switchover to digital and lost the Ceefax service in the process, it has been a long farewell, which I have written about here before.

Now, with the analogue TV signal in Northern Ireland being switched off, the last stage in the process has arrived, and the service will come to an end.

The BBC Red Button services will carry on the Ceefax tradition of providing clear and concise news from around the UK and the world, on demand, on your TV.

Indeed the Red Button service is in the process of being reinvented for internet-enabled TV sets, and this “Connected Red Button” service will combine the simplicity of traditional Red Button with the flexibility and depth of online. My colleague Daniel Danker has written about this work here and there is already a BBC News app for connected TVs which I wrote about here and here when it launched.

At its peak, Ceefax had an audience of some 20 million viewers a week, and as the end of the service has approached, it has received several thousand letters and emails of thanks from viewers.

In a tribute to the clarity of Ceefax’s simple, concise format and news stories, and to mark Ceefax’s last day, the Plain English Campaign – which campaigns for clear, concise language in public information – has given Ceefax a lifetime achievement award.

It’s an honour to have received so many tributes from Ceefax viewers, and to get this award, and both are a recognition of the skill and dedication of all the journalists who have worked on the service over the years, and the care they have taken in writing every story.

Steve Herrmann is editor of the BBC News website.