Not all ultra-processed foods are bad for your health, whatever you might have heard
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In recent years, there’s been increasing hype about the potential health risks associated with so-called “ultra-processed” foods.
But new evidence published this week found not all “ultra-processed” foods are linked to poor health. That includes the mass-produced wholegrain bread you buy from the supermarket.
While this newly published research and associated editorial are unlikely to end the wrangling about how best to define unhealthy foods and diets, it’s critical those debates don’t delay the implementation of policies that are likely to actually improve our diets.
What are ultra-processed foods?
Ultra-processed foods are industrially produced using a variety of processing techniques. They typically include ingredients that can’t be found in a home kitchen, such as preservatives, emulsifiers, sweeteners and/or artificial colours.
Common examples of ultra-processed foods include packaged chips, flavoured yoghurts, soft drinks, sausages and mass-produced packaged wholegrain bread.
In many other countries, ultra-processed foods make up a large proportion of what people eat. A recent study estimated they make up an average of 42% of total energy intake in Australia.
How do ultra-processed foods affect our health?
Previous studies have linked increased consumption of ultra-processed food with poorer health. High consumption of ultra-processed food, for example, has been associated with a higher risk of type 2 diabetes, and death from heart disease and stroke.
Ultra-processed foods are typically high in energy, added sugars, salt and/or unhealthy fats. These have long been recognised as risk factors for a range of diseases.
It has also been suggested that structural changes that happen to ultra-processed foods as part of the manufacturing process may lead you to eat more than you should. Potential explanations are that, due to the way they’re made, the foods are quicker to eat and more palatable.
It’s also possible certain food additives may impair normal body functions, such as the way our cells reproduce.
Is it harmful? It depends on the food’s nutrients
The new paper just published used 30 years of data from two large US cohort studies to evaluate the relationship between ultra-processed food consumption and long-term health. The study tried to disentangle the effects of the manufacturing process itself from the nutrient profile of foods.
The study found a small increase in the risk of early death with higher ultra-processed food consumption.
But importantly, the authors also looked at diet quality. They found that for people who had high quality diets (high in fruit, vegetables, wholegrains, as well as healthy fats, and low in sugary drinks, salt, and red and processed meat), there was no clear association between the amount of ultra-processed food they ate and risk of premature death.
This suggests overall diet quality has a stronger influence on long-term health than ultra-processed food consumption.
When the researchers analysed ultra-processed foods by sub-category, mass-produced wholegrain products, such as supermarket wholegrain breads and wholegrain breakfast cereals, were not associated with poorer health.
This finding matches another recent study that suggests ultra-processed wholegrain foods are not a driver of poor health.
The authors concluded, while there was some support for limiting consumption of certain types of ultra-processed food for long-term health, not all ultra-processed food products should be universally restricted.
Should dietary guidelines advise against ultra-processed foods?
Existing national dietary guidelines have been developed and refined based on decades of nutrition evidence.
Much of the recent evidence related to ultra-processed foods tells us what we already knew: that products like soft drinks, alcohol and processed meats are bad for health.
Dietary guidelines generally already advise to eat mostly whole foods and to limit consumption of highly processed foods that are high in refined grains, saturated fat, sugar and salt.
But some nutrition researchers have called for dietary guidelines to be amended to recommend avoiding ultra-processed foods.
Based on the available evidence, it would be difficult to justify adding a sweeping statement about avoiding all ultra-processed foods.
Advice to avoid all ultra-processed foods would likely unfairly impact people on low-incomes, as many ultra-processed foods, such as supermarket breads, are relatively affordable and convenient.
Wholegrain breads also provide important nutrients, such as fibre. In many countries, bread is the biggest contributor to fibre intake. So it would be problematic to recommend avoiding supermarket wholegrain bread just because it’s ultra-processed.
So how can we improve our diets?
There is strong consensus on the need to implement evidence-based policies to improve population diets. This includes legislation to restrict children’s exposure to the marketing of unhealthy foods and brands, mandatory Health Star Rating nutrition labelling and taxes on sugary drinks.
These policies are underpinned by well-established systems for classifying the healthiness of foods. If new evidence unfolds about mechanisms by which ultra-processed foods drive health harms, these classification systems can be updated to reflect such evidence. If specific additives are found to be harmful to health, for example, this evidence can be incorporated into existing nutrient profiling systems, such as the Health Star Rating food labelling scheme.
Accordingly, policymakers can confidently progress food policy implementation using the tools for classifying the healthiness of foods that we already have.
Unhealthy diets and obesity are among the largest contributors to poor health. We can’t let the hype and academic debate around “ultra-processed” foods delay implementation of globally recommended policies for improving population diets.
Gary Sacks, Professor of Public Health Policy, Deakin University; Kathryn Backholer, Co-Director, Global Centre for Preventive Health and Nutrition, Deakin University; Kathryn Bradbury, Senior Research Fellow in the School of Population Health, University of Auckland, Waipapa Taumata Rau, and Sally Mackay, Senior Lecturer Epidemiology and Biostatistics, University of Auckland, Waipapa Taumata Rau
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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The Two-Second Advantage – by Vivek Ranadive and Kevin Maney
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The titular “two-second advantage” can in some cases be literal (imagine you got a two-second head-start in a boxing match!), in other cases can refer to being just a little ahead of things in a way that can confer a great advantage, often cumulatively—as anyone who’s played Monopoly can certainly attest.
Vivek Ranadivé and Kevin Maney give us lots of examples from business, sports, politics, economics, and more, in a way that seeks to cultivate a habit of asking the right questions in order to anticipate the future and not just be ahead of the competition—some areas of life don’t have competition for most people, like health, for example—but to generally have things “in hand”.
When it comes to personal finances, health, personal projects, and the like, those tiny initial advantages that lead to incremental further improvements, can be the difference between continually (and frantically) playing catch-up, or making the jump past breaking even to going from strength to strength.
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Why You Don’t Need 8 Glasses Of Water Per Day
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The idea that you need to drink eight glasses of water daily is a myth. For most people most of the time, this practice will not make your skin brighter, improve mental clarity, or boost energy levels. All that will happen as a result of drinking beyond your thirst, is that you’ll pee more.
A self-regulating system
Our kidneys regulate hydration by monitoring blood volume and salt levels. When blood becomes slightly saltier or its volume drops, such as through sweating, the kidneys absorb more water into the bloodstream. If needed, the body triggers thirst signals to encourage fluid intake.
In most cases, you can rely on your body’s natural thirst cues to manage hydration. Thirst is a reliable indicator of when you need to drink water, making constant monitoring of water intake unnecessary for most people.
There are some exceptions, though! Some people, such as those with kidney stones, especially older adults, or those with specific medical considerations and resultant advice from your doctor, may need to pay closer attention to their water intake.
Nor does hydration have to be a matter of “drinking water”: many foods and drinks, such as fruit, coffee, soups, etc, contribute to your daily water intake and (because the body processes it more slowly) are often more hydrating than plain water (which can just pass straight through if you take more than a certain amount at once). If you listen to your body’s thirst signals, there’s no need to rigidly count eight glasses of water each day.
For more on all of this, enjoy:
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Want to learn more?
You might also like to read:
Hydration Mythbusting ← this also covers why urine color is not as good a guide as your thirst
Take care!
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The Intelligence Trap – by David Robson
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We’re including this one under the umbrella of “general wellness”, because it happens that a lot of very intelligent people make stunningly unfortunate choices sometimes, for reasons that may baffle others.
The author outlines for us the various reasons that this happens, and how. From the famous trope of “specialized intelligence in one area”, to the tendency of people who are better at acquiring knowledge and understanding to also be better at acquiring biases along the way, to the hubris of “I am intelligent and therefore right as a matter of principle” thinking, and many other reasons.
Perhaps the greatest value of the book is the focus on how we can avoid these traps, narrow our bias blind spots, and play to our strengths while paying full attention to our weaknesses.
The style is very readable, despite having a lot of complex ideas discussed along the way. This is entirely to be expected of this author, an award-winning science writer.
Bottom line: if you’d like to better understand the array of traps that disproportionately catch out the most intelligent people (and how to spot such), then this is a great book for you.
Click here to check out The Intelligence Trap, and be more wary!
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Shoulders Range – by Elia Bartolini
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Shoulder flexibility and mobility can be a big deal, especially when it starts to decline—more so than other kinds of flexibility. Most seniors can get through the day without doing the splits against a wall, for example, but shoulder tightness can be more of a problem if you can’t easily get into or out of your clothes.
If you think it couldn’t happen to you: the great Jane Fonda has a now-famous photoset of her looking glamorous in a dress at a red carpet event, and then looking frazzled making breakfast in the same dress in her kitchen the next morning, because, as she wrote, “I couldn’t get my dress unzipped so I slept in it”.
Now, “to avoid ending up like Jane Fonda” is not a series of words that usually precedes advice, but in this case: this book delves into the science of one of the most quirky joints of the human body, and how to leverage this to maximize shoulder mobility, while maintaining adequate strength (because flexibility without strength is just asking for a dislocation) without doing anything that would actually bulk up our shoulders, because it’s just about progressing through passive, active, and tensed stretching, static, dynamic, and loaded stretching, as well as PNF stretching and antagonist stretching.
If that seems like a lot of stretching, don’t worry; the author presents a series of workouts that will take us through these stretches in a very small amount of time each day.
The style is instructional like a textbook, with clear diagrams where appropriate, and lots of callout boxes, bullet points, emboldening for key points, etc. It all makes for every easy learning.
Bottom line: if you’d like to improve and maintain your shoulder mobility, this is an excellent book for that.
Click here to check out Shoulders Range, and perfect your shoulders and upper body flexibility!
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Are you over 75? Here’s what you need to know about vitamin D
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Vitamin D is essential for bone health, immune function and overall wellbeing. And it becomes even more crucial as we age.
New guidelines from the international Endocrine Society recommend people aged 75 and over should consider taking vitamin D supplements.
But why is vitamin D so important for older adults? And how much should they take?
OPPO Find X5 Pro/Unsplash Young people get most vitamin D from the sun
In Australia, it is possible for most people under 75 to get enough vitamin D from the sun throughout the year. For those who live in the top half of Australia – and for all of us during summer – we only need to have skin exposed to the sun for a few minutes on most days.
The body can only produce a certain amount of vitamin D at a time. So staying in the sun any longer than needed is not going to help increase your vitamin D levels, while it will increase your risk of skin cancer.
But it’s difficult for people aged over 75 to get enough vitamin D from a few minutes of sunshine, so the Endocrine Society recommends people get 800 IU (international units) of vitamin D a day from food or supplements.
Why you need more as you age
This is higher than the recommendation for younger adults, reflecting the increased needs and reduced ability of older bodies to produce and absorb vitamin D.
Overall, older adults also tend to have less exposure to sunlight, which is the primary source of natural vitamin D production. Older adults may spend more time indoors and wear more clothing when outdoors.
As we age, our skin also becomes less efficient at synthesising vitamin D from sunlight.
The kidneys and the liver, which help convert vitamin D into its active form, also lose some of their efficiency with age. This makes it harder for the body to maintain adequate levels of the vitamin.
All of this combined means older adults need more vitamin D.
Deficiency is common in older adults
Despite their higher needs for vitamin D, people over 75 may not get enough of it.
Studies have shown one in five older adults in Australia have vitamin D deficiency.
In higher-latitude parts of the world, such as the United Kingdom, almost half don’t reach sufficient levels.
This increased risk of deficiency is partly due to lifestyle factors, such as spending less time outdoors and insufficient dietary intakes of vitamin D.
It’s difficult to get enough vitamin D from food alone. Oily fish, eggs and some mushrooms are good sources of vitamin D, but few other foods contain much of the vitamin. While foods can be fortified with the vitamin D (margarine, some milk and cereals), these may not be readily available or be consumed in sufficient amounts to make a difference.
In some countries such as the United States, most of the dietary vitamin D comes from fortified products. However, in Australia, dietary intakes of vitamin D are typically very low because only a few foods are fortified with it.
Why vitamin D is so important as we age
Vitamin D helps the body absorb calcium, which is essential for maintaining bone density and strength. As we age, our bones become more fragile, increasing the risk of fractures and conditions like osteoporosis.
Keeping bones healthy is crucial. Studies have shown older people hospitalised with hip fractures are 3.5 times more likely to die in the next 12 months compared to people who aren’t injured.
People over 75 often have less exposure to sunlight. Aila Images/Shutterstock Vitamin D may also help lower the risk of respiratory infections, which can be more serious in this age group.
There is also emerging evidence for other potential benefits, including better brain health. However, this requires more research.
According to the society’s systematic review, which summarises evidence from randomised controlled trials of vitamin D supplementation in humans, there is moderate evidence to suggest vitamin D supplementation can lower the risk of premature death.
The society estimates supplements can prevent six deaths per 1,000 people. When considering the uncertainty in the available evidence, the actual number could range from as many as 11 fewer deaths to no benefit at all.
Should we get our vitamin D levels tested?
The Endocrine Society’s guidelines suggest routine blood tests to measure vitamin D levels are not necessary for most healthy people over 75.
There is no clear evidence that regular testing provides significant benefits, unless the person has a specific medical condition that affects vitamin D metabolism, such as kidney disease or certain bone disorders.
Routine testing can also be expensive and inconvenient.
In most cases, the recommended approach to over-75s is to consider a daily supplement, without the need for testing.
You can also try to boost your vitamin D by adding fortified foods to your diet, which might lower the dose you need from supplementation.
Even if you’re getting a few minutes of sunlight a day, a daily vitamin D is still recommended.
Elina Hypponen, Professor of Nutritional and Genetic Epidemiology, University of South Australia and Joshua Sutherland, PhD Candidate – Nutrition and Genetic Epidemiology, University of South Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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50 Ways To Rewire Your Anxious Brain – by Dr. Catherine Pittman & Dr. Maha Zayed-Hoffman
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The book is divided into sections:
- Calming the amygdala
- Rewiring the amygdala
- Calming the cortex
- Resisting cortex traps
…each with a dozen or so ways to do exactly what it says in the title: rewire your anxious brain.
The authors take the stance that since our brain is changing all the time, we might as well choose the direction we prefer. They then set out to provide the tools for the lay reader to do that, and (in that fourth section we mentioned) how to avoid accidentally doing the opposite, no matter how tempting doing the opposite may be.
For a book written by two PhD scientists where a large portion of it is about neuroscience, the style is very light pop science (just a few in-line citations every few pages, where they couldn’t resist the urge), and the focus is on being useful to the reader throughout. This all makes for reassuringly science-based but accessibly readable book.
The fact that the main material comes in the form of 50 very short chapters also makes it a lot more readable for those for whom sitting down to read a lot at a time can be off-putting.
Bottom line: if you experience anxiety and would like to experience it less, this book will guide you through how to get there.
Click here to check out 50 Ways To Rewire Your Anxious Brain, and rewire your anxious brain!
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