Toy Story 5 trailer drops: Woody and Buzz are back to take on tech

Source: Radio New Zealand

The Toy Story franchise is back with its fifth instalment and this time – the toys are taking on technology.

By the time Toy Story 5 hits theatres in June, it will have been seven years since Toy Story 4 was released.

The trailer for the latest Disney and Pixar film has just been released today, with plenty of familiar characters.

Woody, Buzz Lightyear, Jessie and the rest of the gang are all back.

But the toys that remained with Bonnie after Andy gave them a new home at the end of Toy Story 4 have become second best to a new one – a Lilypad smart tablet.

The trailer shows Bonnie – now 8 years old – becoming obsessed with her tablet and Jessie growing angrier with its seemingly lack of interest in her concerns.

Jessie reaches out to Woody for help.

“Is it as bad out there for toys as they say it is?” she asks.

“We’re finding more abandoned toys each day,” he tells her.

“I don’t know, Jessie, toys are for play but tech if for everything.”

Understanding Jessie’s fears of “losing Bonnie to this device”, he finds his way back to the team to help.

As well as the much-loved characters from the previous films in the franchise, all new ones will be introduced in Toy Story 5.

According to a press release, Craig Robinson has joined the franchise as Atlas, a talking GPS hippo toy, Shelby Rabara voices a camera toy named Snappy, Scarlett Spears will voice now 8-year-old Bonnie, and Mykal-Michelle Harris voices Blaze, “an independent 8-year-old girl who loves animals”.

Tom Hanks and Tim Allen are both back voicing Woody and Buzz Lightyear with Greta Lee voicing Lilypad.

Toy Story 5 is directed by Andrew Stanton, also known for other animated hits like Finding Nemo, Finding Dory and Wall-E.

According to Variety, Stanton says the film is less of a traditional “good-versus-evil showdown” and more “an existential reckoning for toys facing obsolescence”.

According to The Numbers, the Toy Story franchise has grossed more than US$3.3 billion worldwide. Toy Story 4 and Toy Story 3 are its biggest earners so far, grossing more than $1b each.

Toy Story 5 will be released in New Zealand theatres on 18 June 2026.

– Published by EveningReport.nz and AsiaPacificReport.nz, see: MIL OSI in partnership with Radio New Zealand

Live: Former prince Andrew arrested by UK police over Epstein ties

Source: Radio New Zealand

Follow updates with RNZ’s live blog above.

Britain’s former prince Andrew has been arrested overnight over allegations he sent confidential government documents to the late convicted sex offender Jeffrey Epstein.

King Charles’ younger brother – now known as Andrew Mountbatten-Windsor after he wasstripped by his older brother of his titles and honours last October – was arrested on suspicion of misconduct in public office on Thursday, his 66th birthday.

The second son of the late Queen Elizabeth is now in police custody. He has always denied any wrongdoing in relation to Epstein, and said he regrets their friendship.

Follow updates with RNZ’s live blog at the top of this page.

– Published by EveningReport.nz and AsiaPacificReport.nz, see: MIL OSI in partnership with Radio New Zealand

Review: No Other Choice is impossible to predict

Source: Radio New Zealand

You aren’t in much danger of walking out of No Other Choice wondering what it was about.

But director Park Chan-wook’s idiosyncratic, dark-comedy thriller is a masterclass in how hilarious, anxiety-inducing and chilling being on-the-nose can be.

When protagonist and former “Pulp Man of the Year'” Yoo Man-su loses his paper factory job in a takeover, his idyllic, summer barbeque-filled life comes under threat. As bills mount up, Yoo, his devoted wife and their kids (a boy and a girl – the daughter is a cello prodigy, of course) face the prospect selling their beautiful mid-century mansion.

This video is hosted on Youtube.

It’s a very corny opening and laid on very, very thick. We even watch their two golden retrievers being driven away in the back of a car.

Struggling to get work amid fierce competition in a dwindling, increasingly automated industry, Yoo decides the only thing left to do is to find and kill the rivals that threaten to beat him to a new job.

What follows is an equally riotous and disturbing serial killer comedy of as many errors as you’d expect when a “paper man” tries to play assassin.

Park (Oldboy, Decision to Leave) is, perhaps, best known for films where people do violence to each other with things like hammers. But much of the tension of No Other Choice is the violence that doesn’t happen – the hesitation, the doubt and the incompetence that make any given moment feel like it could go any way. It’s impossible to predict.

Every scene feels as likely to end in slapstick comedy and humiliating failure as it is to turn truly grim. What’s most remarkable isn’t the seamless pivots from comedy to darkness, but how easily it manages at go both ways at simultaneously.

As Yoo holds a giant pot plant over the edge of a building, preparing to drop it on a competitor, plant water begins to trickle out and then runs slowly down his face.

These scenes are boldly wrapped in eye-catching and idiosyncratic cinematography, as Park deploys every playful technique in the kit, and a few new ones.

Be ready for Dutch angles galore.

Even the music gets in on the comedy – although it’s a joke better not spoilt.

No Other Choice feels like a test of the limits of sympathy for the very unsympathetic goals of a mostly unsympathetic antihero.

As Yoo, Lee Byung-hun (KPop Demon Hunters, Squid Game) mugs, grimaces, panics and transparently lies his way between job interviews, killings and family time. He plays it big, exactly where the film needs it to be.

It’s also a portrayal of cowardice disguised as desperation that’s as sleazy as they come.

And while No Other Choice devotes much of its energy looking into the strange ways we deform ourselves to compete in a capitalist system that turns us on each other, it refuses to let its protagonist off the hook.

It’s just as much concerned with the kind of toxic masculinity that drives men to obsessive, silly, madness, and what it means for those around them.

These are ideas both incredibly of our times and, of course, as true now as they were in fiction hundreds of years ago.

But No Other Choice delivers them in a heart-stopping, side-splitting vehicle that is a hard to compete with.

– Published by EveningReport.nz and AsiaPacificReport.nz, see: MIL OSI in partnership with Radio New Zealand

Why do nose and ear hairs become longer and thicker as we age?

Source: Radio New Zealand

Growing older often brings unexpected grooming challenges. This is particularly apparent when some areas that, when young, we could otherwise ignore start to develop hair.

This includes our nose and ears, where hair grows thicker and longer as we age. But why do hairs in these areas act like this?

The answer predominantly lies in our sex hormones.

Androgens are a group of sex hormones that influence hair growth, and are the key to understanding why we have longer and thicker hairs in our nose and ears.

Unsplash

Two types of hair

There are two types of hair that grows across our bodies.

Vellus hair is fine and colourless. This hair (also called “peach fuzz”) grows across most of our body, including our arms and neck.

Terminal hair is stiff, thick and darker. It stands up from our skin and is usually very obvious. Adult males have terminal hair on about 90% of their body, with females growing it on about 30% of their bodies.

Terminal hair stands up when we’re cold (giving goosebumps) and helps trap heat to keep us warm. It also protects us from the sun (such as hair on our scalp), and keeps dust and dirt out of our eyes through eyebrows and eyelashes.

As vellus hair is smaller, thinner and colourless, it is not usually an aesthetic problem (although it can be altered in some diseases). Instead, it is the terminal hair that is often noticed, and the primary target of our razor.

The normal process of hair development involves a growth phase (anagen), follicle-shrinking phase (catagen), and then a short resting phase (telogen) before the hair falls out and is replaced as the cycle begins again. Some 90% of the hair on our body is in the growth phase at any given time.

Nose, ear, eyelash and eyebrow hairs don’t usually grow too long. This is because the growth phase of the follicles only lasts about 100–150 days, meaning there is a limit to how long they can get.

Alternatively, the hair on your head has a growth phase that lasts several years, so it can grow to more than one meter in length if you don’t get it cut.

Why do we have hair in our nose and ears?

We have about 120 hairs growing in each of our nasal cavities, with an average length of about 1 centimetre.

As you breathe through your nostrils, the hair in your nose works with the mucus to block and collect dust, pollen and other particles that could make their way to your lungs.

The hair in the ears also plays a protective role, trapping foreign objects and working with the earwax to facilitate self-cleaning processes.

What is the effect of ageing?

Androgens are a group of sex hormones that play a key role in puberty, development, and sexual health. The most common androgen is testosterone.

These androgens influence hair growth, and are the key to understanding why we have longer and thicker hairs in our nose and ears.

Hairs in different parts of the body respond to androgens differently. Unlike some hairs that are stimulated at puberty (such as pubic hairs and facial hair in males), some hairs, such as the eyelashes, don’t respond at all to androgens. Others increase hair size much slower, like the ear canal hair that can take up to 30 years.

Females have lower levels of androgens in the body, so major hair growth changes are more localised to the underarms and pubic regions.

We don’t have much data to support various conclusions about hair growth in later life, as most studies have focused on why we lose hair (such as balding) rather than why we have too much.

Nonetheless, there are still some hypotheses about why we grow more ear and nose hair as we age.

  1. As we age, the body is exposed to androgens for a long time. This prolonged exposure makes some parts of the body more sensitive to testosterone, potentially stimulating the growth of hairs.
  2. Over time, and long-term exposure to testosterone, some of the fine vellus hairs may undergo a conversion and become the darker, longer terminal hairs. This terminal hair then sticks out of our noses and ears.
  3. Alongside increased levels of androgens as we go through puberty, a protein called SHBG (sex hormone binding globulin) is also released. This protein helps control the amount of testosterone and estrogen reaching your tissues. During ageing, the levels of SHBG levels may decrease faster than androgens, leaving testosterone to stimulate ear and nose hair growth.
  4. Hair simply changes with age. This can result in changes in colour, thinning, and follicle alterations. There might be variations occurring in the follicles that respond to our body’s changing environment, stimulating longer hair growth.

Most of the impact of hairy ears and noses is observed in males, as they have larger amounts of testosterone.

Should we be worried?

It’s not usually a problem. Having a hairy ear (auricular hypertrichosis) does not appear to impact hearing at all. Note that if you are using hearing aids, excessive hair can impact their effectiveness, so in these rarer cases it is worth having a chat with your doctor.

The largest issue appears to be the appearance of these hairs, which can make some people self-conscious.

To address this, avoid plucking hairs out (such as with tweezers), as this can lead to infections, ingrown hairs and inflammation.

Instead, it is safest to reach for the trimmers (or employ laser hair removal processes) to clean up the area a little.

Christian Moro is associate professor of science & medicine, Bond University. Charlotte Phelps is senior teaching fellow in medicine, Bond University.

– Published by EveningReport.nz and AsiaPacificReport.nz, see: MIL OSI in partnership with Radio New Zealand

Actor arrested after Mardi Gras fight

Source: Radio New Zealand

Shia LaBeouf was arrested just after midnight on Tuesday (local time) in New Orleans where police said the 39-year-old Transformers film star assaulted two men in a fight during Mardi Gras.

The actor has previously faced a series of arrests and legal issues, including pleading guilty to a charge of obstruction. Police said he was charged with two counts of simple battery.

Officers were called about 12.45am (local time) to a business on Royal Street where two men reported being assaulted.

A police statement said LaBeouf had been causing a disturbance and growing increasingly aggressive. When a staffer tried to remove him, LaBeouf allegedly struck the man several times with closed fists.

The victims told police LaBeouf left but soon returned and acted even more aggressive. Several people tried to restrain him and briefly let him up in hopes he would leave, but he allegedly hit the same staffer again, punching his upper body. Police said he then punched another man in the nose.

Bystanders held LaBeouf until officers arrived. He was taken to a hospital with unspecified injuries and released.

Police gave no additional details on what triggered the disturbance or the victims’ conditions.

– Published by EveningReport.nz and AsiaPacificReport.nz, see: MIL OSI in partnership with Radio New Zealand

The truth about energy: Why your 40s feel harder than your 20s, but there may be a lift later on

Source: Radio New Zealand

Some of us remember having more energy in our 20s. We could work late, sleep badly, have a night out, recover quickly and still feel capable the next day. By our 40s, that ease has often gone. Fatigue feels harder to shake. It’s tempting to assume this is simply the ageing process – a one‑way decline.

The truth is that the 40s are often the most exhausting decade, not because we are old, but because several small biological changes converge at exactly the same time that life’s demands often peak. Crucially, and optimistically, there is no reason to assume that energy must continue to decline in the same way into our 60s.

Midlife is often a time of maximum cognitive load.

Unsplash

Do women really need more sleep than men?

Energetic 20s

In early adulthood, multiple systems peak together.

Muscle mass is at its highest, even without deliberate training. As a metabolically active tissue, muscle helps regulate blood sugar and reduces the effort required for everyday tasks. Research shows that skeletal muscle is metabolically active even at rest and contributes substantially to basal metabolic rate (the energy your body uses just to keep you alive when you’re at rest). When you have more muscle, everything costs less energy.

At the cellular level, mitochondria – the structures that convert food into usable energy – are more numerous and more efficient. They produce energy with less waste and less inflammatory byproduct.

Sleep, too, is deeper. Even when sleep is shortened, the brain produces more slow‑wave sleep, the phase most strongly linked to physical restoration.

Hormonal rhythms are also more stable. Cortisol, often described as the body’s stress hormone, melatonin, growth hormone and sex hormones follow predictable daily patterns, making energy more reliable across the day.

Put simply, energy in your 20s is abundant and forgiving. You can mistreat it and still get away with it.

Exhausting 40s

By midlife, none of these systems has collapsed, but small shifts start to matter.

Muscle mass begins to decline from the late 30s onwards unless you exercise to maintain it. This in itself is a top tip – do strength training. The loss of muscle is gradual, but its effects are not. Less muscle means everyday movement costs more energy, even if you don’t consciously notice it.

Mitochondria still produce energy, but less efficiently. In your 20s, poor sleep or stress could be buffered. In your 40s, inefficiency is exposed. Recovery becomes more “expensive”.

Sleep also changes. Many people still get enough hours, but sleep fragments. Less deep sleep means less repair. Fatigue feels cumulative rather than episodic.

Hormones don’t disappear in midlife – they fluctuate, particularly in women. Variability, not deficiency, disrupts temperature regulation, sleep timing and energy rhythms. The body copes better with low levels than with unpredictable ones.

Then there is the brain. Midlife is a period of maximum cognitive and emotional load: leadership, responsibility, vigilance and caring roles. The prefrontal cortex – responsible for planning, making decisions and inhibition – works harder for the same output. Mental multitasking drains energy as effectively as physical labour.

This is why the 40s feel so punishing. Biological efficiency is beginning to shift at exactly the moment when demand is highest.

Hopeful 60s

Later life is often imagined as a continuation of midlife decline; however, many people report something different.

Hormonal systems often stabilise after periods of transition. Life roles may simplify. Cognitive load can reduce. Experience replaces constant active decision‑making.

Sleep doesn’t automatically worsen with age. When stress is lower and routines are protected, sleep efficiency can improve – even if total sleep time is shorter.

Crucially, muscle and mitochondria still adapt surprisingly well into later life. Strength training in people in their 60s, 70s and beyond can restore strength, improve metabolic health and increase subjective energy within months.

This doesn’t mean later life brings boundless energy, but it often brings something else: predictability.

Good news?

Across adulthood, energy shifts in character rather than simply declining. The mistake we make is assuming that feeling tired in midlife reflects a personal failing, or that it marks the start of an unavoidable decline. Anatomically, it is neither.

Midlife fatigue is best understood as a mismatch between biology and demand: small shifts in efficiency occurring at precisely the point when cognitive, emotional and practical loads are at their highest.

The hopeful message is not that we can reclaim our 20-year-old selves. Rather, it is that energy in later life remains highly modifiable, and that the exhaustion so characteristic of the 40s is not the endpoint of the story. Fatigue at this stage is not a warning of inevitable decline; it is a signal that the rules have changed.

Michelle Spear is professor of anatomy at the University of Bristol.

– Published by EveningReport.nz and AsiaPacificReport.nz, see: MIL OSI in partnership with Radio New Zealand

Logan Paul’s ‘holy grail’ of Pokémon cards sells for $27.3 million

Source: Radio New Zealand

Five years ago, Logan Paul set a world record when he purchased a Pokémon card for US$5.275 million (NZ$8.74 million). It proved a sound investment – the influencer and wrestler sold that card for a jaw-dropping $16.492 million (NZ$27.3 million), with a diamond encrusted necklace thrown in.

The rare Pikachu Illustrator card –– one of just 39 created for a Pokémon illustration competition in the late 90s –– went under the hammer on Goldin auctions on Monday.

It is believed to have earned the WWE star more than NZ$13 million in profit after auction fees, a sale he called “absolutely insane”.

The auction had been running for 42 days but came to an end after hours of extended bidding Monday, with Paul saying “we may have tired someone out” during a YouTube live stream.

“Oh my gosh, this is crazy,” he added once the auction closed and confetti rained down.

Moments later, a Guinness World Records official appeared onscreen and confirmed Paul had sold the most expensive trading card ever at auction.

This time around the card was sold inside a custom necklace worn by Paul at WrestleMania 38 and with his promise to hand-deliver it to the winning bidder.

Pokémon is the world’s highest-grossing media franchise, surpassing even Disney and Star Wars. Cards have rocketed in value, outpacing sports cards and beating the S&P stock market by 3000 percent in the past 20 years, Goldin founder and CEO Ken Goldin told CNN in December after Logan confirmed he would be auctioning off the card.

“This is the most coveted trading card in the world,” he said.

Goldin said the Illustrator is considered “the holy grail of all Pokémon cards” and Paul’s card was what everybody wants because it’s virtually flawless – the only Illustrator card considered a Grade 10 card by authentication agency PSA.

As Monday’s bidding drew to a close, the price initially held at $11.41 million until a flurry of last-minute offers during an extended bidding period lasting several hours drove the final auction total to $27.33 million from 97 total bids.

Paul has a reputation for taking collectibles to extreme levels and has spent millions to secure some of the rarest items ever produced, including NFTs – unique, verifiable digital assets traded on the blockchain.

The WWE wrestling star bid farewell to the card on Saturday in an Instagram post, saying “goodbye my friend. What a privilege it’s been to be the owner of the greatest collectible in the world.”

The card is just one of 20 Illustrator cards graded by PSA.

Paul got his hands on the ultra-rare Grade 10 card by swapping a PSA Grade 9 Pikachu Illustrator card he previously owned – worth $2.11 – and $6.6 million in cash for it in July 2021.

Only eight of the Pikachu Illustrator cards have been awarded a PSA Grade 9 and Paul’s sale is the only PSA Grade 10, the highest and most desirable grade assigned by PSA.

– Published by EveningReport.nz and AsiaPacificReport.nz, see: MIL OSI in partnership with Radio New Zealand

Oscar-winning actor Robert Duvall dead at 95

Source: Radio New Zealand

Robert Duvall, the Oscar-winning actor best known for The Godfather, Apocalypse Now and many other tough-guy roles over an acclaimed screen career that spanned six decades, has died. He was 95.

Duvall died “peacefully” at his home in Middleburg, Virginia on Sunday (US time), according to a statement sent by his public relations agency on behalf of his wife, Luciana.

Duvall memorably played the Corleone family consigliere, or key adviser, in Francis Ford Coppola’s The Godfather, earning his first of his seven Academy Award nominations for the 1972 film before reprising the role two years later in The Godfather Part II. Duvall noticeably skipped a long-delayed second sequel, The Godfather Part III, due to a pay dispute.

Robert Duvall in Apocalypse Now.

Photo12 via AFP

– Published by EveningReport.nz and AsiaPacificReport.nz, see: MIL OSI in partnership with Radio New Zealand

Our Changing World: Science for future fashion

Source: Radio New Zealand

Senior technician Sean Taylor displays the new solution for mounting sensors onto smart clothing. RNZ

Follow Our Changing World on Apple, Spotify, iHeartRadio or wherever you listen to your podcasts.

Over the last three decades the rise of fast fashion, and the explosion of plastics in our clothes like polyester and nylon, has created sustainability and environmental issues.

Globally 92 million tonnes of textile waste is produced each year, and an estimated half a tonne of unwanted clothes is sent to landfills in New Zealand every five minutes. The fashion industry is a major contributor to carbon emissions, and each wash of petroleum-based textiles produces more microplastic pollution that gets into our waterways.

Enter the European UPWEARS project, which aims to use science and innovation to tackle these problems.

Future fashion

“We are expecting to have a totally new, sustainable and innovative supply chain for the textile industry,” says Dr Yi Chen.

UPWEARS is a four-year, €7 million (NZ$13.7m) research project involving 14 partners from seven countries, one of which is New Zealand’s Bioeconomy Science Institute. While the project is led by the French national research institute INRAE, Yi is the UPWEARS New Zealand lead, based on the Institute’s campus in Rotorua (previously Scion).

It is a lofty goal. One that they have split into different sections to tackle; replacing plastic-based yarns with natural ones that will biodegrade, creating new textile processing technologies that are more energy efficient, designing smart sensing ‘e-textiles’ and figuring out if there’s a way to recycle existing textile waste.

Bioeconomy Science Institute

The project is funded by Horizon Europe, the EU’s key funding programme for research and innovation. New Zealand can bid for funding by applying with European partners and the New Zealand government pays back to Horizon Europe what is received in grants.

This international collaboration is key, says Yi. The Bioeconomy Science Institute has expertise in biomaterial development, and the campus has biodegradation facilities that will be vitally important for later in the project to test whether the clothing they create can break down. The European partners bring state-of-the-art research facilities like particle accelerators and large-scale additive manufacturing, as well as textile industry knowledge.

The project kicked off in November 2024 with a meeting in France and the next gathering will take place in Rotorua in 2027.

At that stage, they hope to have produced a prototype example of ‘clothing of the future’ – a smart cycling suit with built-in sensors capable of analysing your sweat or environmental conditions. All made from natural fibres that can be reused or biodegrade at the end of the clothing’s life.

Dr Kate Parker at the Bioeconomy Science Institute’s biodegradation facility. RNZ

Creating clever yarn for smart clothing

In one of the chemistry labs on campus Dr Robert Abbel holds up a clear plastic bag with two fibres inside. One is a pale-yellow colour. This is what their European partners send to him – samples of the natural-based yarns they have developed made from hemp and European flax.

The other is a dark black colour, a result of Robert’s efforts to make this yarn able to conduct electricity.

To do this he makes use of a molecule called lignin which is naturally found in wood but is stripped out as waste in the paper-making industry. But Robert has found a way to put this waste to use.

“We process the lignins into nanoparticles and then give them a high temperature, so-called carbonisation, treatment. So they turn into carbon. That means they get conductive. And then we deposit them on the yarns in order to make the yarns conductive so that they can be woven into functional textiles.”

Their collaborators will use these conductive yarns in their aim of creating smart textiles – sensors that are part of the clothing that can monitor different health or environmental markers, such as breathing and heart rate, or air pollutants.

But they will need something to mount these sensors on, and work is underway on that too in Rotorua.

Dr Robert Abbel has been working on how to make the natural fibre yarn conductive using the waste product lignin. RNZ

Putting paper-making skills to new use

Senior technologist Sean Taylor spends much of his time in one of the oldest labs on campus. Once it would have been used to investigate how best to make paper out of wood pulp. Now Sean is applying this knowledge to new research questions.

Cellulose, the main strengthening component of wood, is the most abundant polymer on Earth, and is the basis of papermaking. Now, Sean says, while demand for paper production seems to be waning, there’s growing interest in using cellulose to replace plastic polymers wherever possible.

Sean has been combining cellulose from different sources (different tree species have different length cellulose fibres) with waste lignin to produce a paper-like material that’s stiff, robust and water resistant. Perfect to mount a sensor on for this new smart clothing.

As well as this innovation around biomaterials, some of the Rotorua-based UPWEARS team are also investigating whether there are solutions for existing textile waste.

End of life

In a garage-like space at the back of the campus, Louise Le Gall flicks leavers and pushes a satisfyingly-large red button to switch the big yellow extrusion machine on.

As it hums to life, she explains that it uses a combination of heat and mechanical pressure exerted by two turning screws to melt and mix whatever is fed into it. Louise is currently researching whether she will be able to give used textiles a new lease of life using this machine.

Louise Le Gall is the materials engineer tasked with try to figure out how to recycle waste textiles into 3D printer filament. RNZ

The goal is to take different types of materials and use them to create 3D printing filament, but it is all about characterising what you are working with, she explains.

“You have to know how to play with the parameters to obtain the product you want at the end. So in the case of the UPWEARS project, we have some textile waste. You can have nylon, you can have polyester, you can also have cotton. And our goal is to find which parameter we’re going to choose to mix all that together in the machine, without burning one material and melting the other.”

If it works, they’ll use this recycled textile filament to 3D print padding to be used in the sportswear. Which the team are hoping will be ready for a test run in Whakarewarewa Forest Park in Rotorua in 2027.

Sign up to the Our Changing World monthly newsletter for episode backstories, science analysis and more.

– Published by EveningReport.nz and AsiaPacificReport.nz, see: MIL OSI in partnership with Radio New Zealand

Benefits of intermittent fasting ‘fail to match the hype’, major review finds

Source: Radio New Zealand

Intermittent fasting has become a popular phrase in dieting, promising to boost metabolism, shed body fat, and even help reduce the risk of diabetes, hypertension and obesity.

From the 5:2 diet to the eight-hour feeding window, it has become a hot topic for researchers to study and internet personalities to promote.

But intermittent fasting regimes “fail to match hype” for significant loss and reducing health risks in people who are overweight, according to a major review of studies by the Cochrane Collaboration.

Fasting is prevalent among the Indian community.

Adobe Stock

Are these the worst wellness trends of the year?

Wellbeing

Review author and physician Eva Madrid, a professor at the University of Valparaiso, said intermittent fasting was no better than following regular dietary advice, or in fact doing nothing at all, for losing weight.

“The key takeaway is that intermittent fasting is not a miracle solution, but it can be one option among several for weight management,” she said.

What is intermittent fasting?

The phrase is an overarching term for cycling periods of normal eating and drinking with times where little to nothing is consumed.

Fasting is promoted by some wellbeing personalities for its ability to encourage the body into “metabolic switching”, where the body relies more heavily on fat stores for energy.

Intermittent fasting is not recommended by health experts for women who are pregnant or breastfeeding, people with eating disorders, people with diabetes or children.

“Given that obesity is a major public health challenge, we wanted to assess, rigorously and independently, whether intermittent fasting actually offers meaningful benefits compared with more conventional dietary advice,” Madrid said.

The types of fasting looked at in the review included the 5:2 diet, popularised by TV presenter Michael Mosley, which encourages participants to eat normal calories five days per week but restricts calorie intake to about 500 calories, the other two days.

Other strategies examined were abstaining from food for 16 hours per day in a method called “time-restricted eating” and fasting on alternate days.

How intermittent fasting studies stack up

The Cochrane team analysed evidence from 22 randomised clinical trials involving 1,995 adults across North America, Europe, China, Australia, and South America.

The review compared the effects of fasting strategies for overweight and obese people with traditional dietary advice that emphasises calorie restriction and eating fruit, vegetables, and whole grains, or with no dietary guidance at all.

According to the analysis, intermittent fasting made little to no difference in weight loss, and little to no difference to quality of life compared to the other two approaches.

The authors also raised concerns about the study designs including how people were randomly assigned to groups and adherence to the diets.

Most studies were also limited to white populations in high-income countries so results couldn’t be extrapolated for other groups.

In addition, most trials included in the review lasted fewer than 12 months, limiting conclusions about long-term sustainability of doing intermittent fasting.

The authors recommended future research should include information about participant satisfaction, diabetes status and long-term loss of lean body mass (weight loss that does not include body fat).

Weight loss doesn’t equal other health improvements

Leonie Heilbronn, who leads the Obesity and Metabolism Lab at the University of Adelaide, said intermittent fasting often provided similar outcomes to reducing calorie intake.

“When you do either a fasting diet or a daily reduction in calories, both of them result in about the same amount of body weight loss. So no arguments there,” she said.

But she said intermittent fasting had some additional benefits that surpassed simple calorie restriction.

“Having that more prolonged fasting period…increases fat burning and allows more rest and repair type mechanisms to start repairing the body.”

However, she thought some methods were less effective than others.

“I think time-restricted eating is a milder intervention than intermittent fasting, in terms of weight loss.”

Luigi Fontana, a professor of medicine and nutrition at University of Sydney said it could be difficult to interpret studies about intermittent fasting, particularly when managing compliance by participants.

Fontana, who studied diets similar to 5:2, said his research showed that people on intermittent fasting did lose some weight, but health risk factors such as blood pressure, glycaemic control and inflammation did not improve.

“Unlike with moderate daily caloric restriction with optimal nutrition, losing weight through intermittent fasting did not automatically translate into broader metabolic benefits,” he said.

Diets alone not answer to long-term benefit

All diets, whether they involve calorie restriction or intermittent fasting, may only deliver short term results, Heilbronn said.

“They are really hard to maintain long-term and it’s not just because you don’t have the willpower.”

She said changes in hunger hormones and energy expenditure could conspire to make you regain weight.

“It’s your body fighting back.”

Fontana recommended combining dietary interventions with regular exercise for longevity of results. 

“Whenever you lose weight with any type of diet, you are lowering your resting metabolic rate, and are more prone to regaining weight.

“If you want good results, combine three days per week of resistance exercise like weightlifting and another two or three days a week of endurance.

“Whether that’s running, biking, swimming, cycling — whatever will increase your resting heart rate and your respiratory rate.”

Ultimately, for someone seeking weight loss, it’s about calorie intake and energy output.

“The broader takeaway is that sustainable results come from how consistently a diet can be followed and from the overall nutritional pattern — not from fasting per se,” Fontana said.

– Published by EveningReport.nz and AsiaPacificReport.nz, see: MIL OSI in partnership with Radio New Zealand