How much weight do you actually need to lose? It might be a lot less than you think
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If you’re one of the one in three Australians whose New Year’s resolution involved losing weight, it’s likely you’re now contemplating what weight-loss goal you should actually be working towards.
But type “setting a weight loss goal” into any online search engine and you’ll likely be left with more questions than answers.
Sure, the many weight-loss apps and calculators available will make setting this goal seem easy. They’ll typically use a body mass index (BMI) calculator to confirm a “healthy” weight and provide a goal weight based on this range.
Your screen will fill with trim-looking influencers touting diets that will help you drop ten kilos in a month, or ads for diets, pills and exercise regimens promising to help you effortlessly and rapidly lose weight.
Most sales pitches will suggest you need to lose substantial amounts of weight to be healthy – making weight loss seem an impossible task. But the research shows you don’t need to lose a lot of weight to achieve health benefits.
Using BMI to define our target weight is flawed
We’re a society fixated on numbers. So it’s no surprise we use measurements and equations to score our weight. The most popular is BMI, a measure of our body weight-to-height ratio.
BMI classifies bodies as underweight, normal (healthy) weight, overweight or obese and can be a useful tool for weight and health screening.
But it shouldn’t be used as the single measure of what it means to be a healthy weight when we set our weight-loss goals. This is because it:
- fails to consider two critical factors related to body weight and health – body fat percentage and distribution
- does not account for significant differences in body composition based on gender, ethnicity and age.
How does losing weight benefit our health?
Losing just 5–10% of our body weight – between 6 and 12kg for someone weighing 120kg – can significantly improve our health in four key ways.
1. Reducing cholesterol
Obesity increases the chances of having too much low-density lipoprotein (LDL) cholesterol – also known as bad cholesterol – because carrying excess weight changes how our bodies produce and manage lipoproteins and triglycerides, another fat molecule we use for energy.
Having too much bad cholesterol and high triglyceride levels is not good, narrowing our arteries and limiting blood flow, which increases the risk of heart disease, heart attack and stroke.
But research shows improvements in total cholesterol, LDL cholesterol and triglyceride levels are evident with just 5% weight loss.
2. Lowering blood pressure
Our blood pressure is considered high if it reads more than 140/90 on at least two occasions.
Excess weight is linked to high blood pressure in several ways, including changing how our sympathetic nervous system, blood vessels and hormones regulate our blood pressure.
Essentially, high blood pressure makes our heart and blood vessels work harder and less efficiently, damaging our arteries over time and increasing our risk of heart disease, heart attack and stroke.
Like the improvements in cholesterol, a 5% weight loss improves both systolic blood pressure (the first number in the reading) and diastolic blood pressure (the second number).
A meta-analysis of 25 trials on the influence of weight reduction on blood pressure also found every kilo of weight loss improved blood pressure by one point.
3. Reducing risk for type 2 diabetes
Excess body weight is the primary manageable risk factor for type 2 diabetes, particularly for people carrying a lot of visceral fat around the abdomen (belly fat).
Carrying this excess weight can cause fat cells to release pro-inflammatory chemicals that disrupt how our bodies regulate and use the insulin produced by our pancreas, leading to high blood sugar levels.
Type 2 diabetes can lead to serious medical conditions if it’s not carefully managed, including damaging our heart, blood vessels, major organs, eyes and nervous system.
Research shows just 7% weight loss reduces risk of developing type 2 diabetes by 58%.
4. Reducing joint pain and the risk of osteoarthritis
Carrying excess weight can cause our joints to become inflamed and damaged, making us more prone to osteoarthritis.
Observational studies show being overweight doubles a person’s risk of developing osteoarthritis, while obesity increases the risk fourfold.
Small amounts of weight loss alleviate this stress on our joints. In one study each kilogram of weight loss resulted in a fourfold decrease in the load exerted on the knee in each step taken during daily activities.
Focus on long-term habits
If you’ve ever tried to lose weight but found the kilos return almost as quickly as they left, you’re not alone.
An analysis of 29 long-term weight-loss studies found participants regained more than half of the weight lost within two years. Within five years, they regained more than 80%.
When we lose weight, we take our body out of its comfort zone and trigger its survival response. It then counteracts weight loss, triggering several physiological responses to defend our body weight and “survive” starvation.
Just as the problem is evolutionary, the solution is evolutionary too. Successfully losing weight long-term comes down to:
losing weight in small manageable chunks you can sustain, specifically periods of weight loss, followed by periods of weight maintenance, and so on, until you achieve your goal weight
making gradual changes to your lifestyle to ensure you form habits that last a lifetime.
Setting a goal to reach a healthy weight can feel daunting. But it doesn’t have to be a pre-defined weight according to a “healthy” BMI range. Losing 5–10% of our body weight will result in immediate health benefits.
At the Boden Group, Charles Perkins Centre, we are studying the science of obesity and running clinical trials for weight loss. You can register here to express your interest.
Nick Fuller, Charles Perkins Centre Research Program Leader, University of Sydney
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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The Science Of New Year’s Pre-Resolutions
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The Science Of New Year’s Pre-Resolutions
There’s a military dictum that “prior preparation and planning prevents p[retty] poor performance”, to paraphrase it very slightly.
Would it surprise you to know that soldiers going on the attack are not focused on the goal? Rather, they are focused on the process.
With drills and mnemonics, everything that can be controlled for in advance is; every action, every reaction, everything that can go wrong, and all the “if x then y” decisions in between pre-battle PREWAR and PAWPERSO and post-battle PACESDO (all mnemonic acronyms; the content is not important here but the principle is).
In short: take Murphy’s Law into account now, and plan accordingly!
The same goes for making your plans the winning kind
If you want your resolutions to work, you may need to make pre-resolutions now, so that you’re properly prepared:
- Do you want to make an exercise habit? Make sure now that you have the right clothes/shoes/etc, make sure that they fit you correctly, make sure you have enough of them that you can exercise when one set’s in the wash, etc.
- What grace will you allow yourself if tired, unwell, busy? What’s your back-up plan so that you still do what you can at those times when “what you can” is legitimately a bit less?
- If it’s an outdoors plan, what’s your plan for when it’s rainy? Snowy? Dangerously hot?
- What are the parameters for what counts? Make it measurable. How many exercise sessions per week, what duration?
- Do you want to make a diet habit? Make sure that you have in the healthy foods that you want to eat; know where you can and will get things. We’re often creatures of habit when it comes to shopping, so planning will be critical here!
- Do you want to cut some food/drink/substance out? Make sure you have a plan to run down or otherwise dispose of your current stock first. And make sure you have alternatives set up, and if it was something you were leaning on as a coping strategy of some kind (e.g. alcohol, cannabis, comfort-eating, etc), make sure you have an alternative coping strategy, too!
See also: How To Reduce Or Quit Alcohol
We promised science, so here it comes
Approach-oriented resolutions work better than avoidance-oriented ones.
This means: positively-framed resolutions work better than negatively-framed ones.
On a simple level, this means that, for example, resolving to exercise three times per week is going to work better than resolving to not consume alcohol.
But what if you really want to quit something? Just frame it positively. There’s a reason that Alcoholics Anonymous (and similar Thing Anonymous groups) measure days sober, not relapses.
So it’s not “I will not consume alcohol” but “I will get through each day alcohol-free”.
Semantics? Maybe, but it’s also science:
Why January the 1st? It’s a fresh start
Resolutions started on the 1st of January enjoy a psychological boost of a feeling of a fresh start, a new page, a new chapter.
Similar benefits can be found from starting on the 1st of a month in general, or on a Monday, or on some date that is auspicious to the person in question (religious fasts tied to calendar dates are a fine example of this).
Again, this is borne-out by science:
The Fresh Start Effect: Temporal Landmarks Motivate Aspirational Behavior
Make it a habit
Here be science:
How do people adhere to goals when willpower is low? The profits (and pitfalls) of strong habits
As for how to do that?
How To Really Pick Up (And Keep!) Those Habits
Trim the middle
No, we’re not talking about your waistline. Rather, what Dr. Ayelet Fischbach refers to as “the middle problem”:
❝We’re highly motivated at the beginning. Over time, our motivation declines as we lose steam. To the extent that our goal has a clear end point, our motivation picks up again toward the end.
Therefore, people are more likely to adhere to their standards at the beginning and end of goal pursuit—and slack in the middle. We demonstrate this pattern of judgment and behavior in adherence to ethical standards (e.g., cheating), religious traditions (e.g., skipping religious rituals), and performance standards (e.g., “cutting corners” on a task).
We also show that the motivation to adhere to standards by using proper means is independent and follows a different pattern from the motivation to reach the end state of goal pursuit❞
Read: The end justifies the means, but only in the middle
How to fix this, then?
Give yourself consistent, recurring, short-term goals, with frequent review points. That way, it’s never “the middle” for long:
The fresh start effect: temporal landmarks motivate aspirational behavior
See also:
How do people protect their long-term goals from the influence of short-term motives or temptations?
Finally…
You might like this previous main feature of ours that was specifically about getting oneself through those “middle” parts:
How To Keep On Keeping On… Long Term!
Enjoy!
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- Do you want to make an exercise habit? Make sure now that you have the right clothes/shoes/etc, make sure that they fit you correctly, make sure you have enough of them that you can exercise when one set’s in the wash, etc.
Feeding You Lies – by Vani Hari
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When it comes to advertising, we know that companies will often be as misleading as they can get away with. But just how misleading is it?
Vani Hari, of “Food Babe” fame, is here to unravel it all.
The book covers many areas of food and drink advertising and marketing, and gives particular attention to:
- Sodas (with and without sugar), and how deleterious they are to the health—as well as not even helping people lose weight, but actively hindering
- Nutritionally fortified foods, and what we may or may not actually get from them by the time the processing is done
- Organic food, and what that may or may not mean
She also covers a lot of what happens outside of supermarkets, way back in universities and corporate boardrooms. In short, who is crossing whose palms with silver for a seal of approval… And what that means for us as consumers.
A strength of this book that sets it apart from many of its genre, by the way, is that while being deeply critical of certain institutions’ practices, it doesn‘t digress into tinfoil-hat pseudoscientific scaremongering, either. Here at 10almonds we love actual science, so that was good to see too.
Bottom line: is you’d like to know “can they say that and get away with it if it’s not true?” and make decisions based on the actual nutritional value of things, this is a great book for you.
Click here to check out “Feeding You Lies” on Amazon and make your shopping healthier!
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What’s the difference between vegan and vegetarian?
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What’s the difference? is a new editorial product that explains the similarities and differences between commonly confused health and medical terms, and why they matter.
Vegan and vegetarian diets are plant-based diets. Both include plant foods, such as fruits, vegetables, legumes and whole grains.
But there are important differences, and knowing what you can and can’t eat when it comes to a vegan and vegetarian diet can be confusing.
So, what’s the main difference?
What’s a vegan diet?
A vegan diet is an entirely plant-based diet. It doesn’t include any meat and animal products. So, no meat, poultry, fish, seafood, eggs, dairy or honey.
What’s a vegetarian diet?
A vegetarian diet is a plant-based diet that generally excludes meat, poultry, fish and seafood, but can include animal products. So, unlike a vegan diet, a vegetarian diet can include eggs, dairy and honey.
But you may be wondering why you’ve heard of vegetarians who eat fish, vegetarians who don’t eat eggs, vegetarians who don’t eat dairy, and even vegetarians who eat some meat. Well, it’s because there are variations on a vegetarian diet:
- a lacto-ovo vegetarian diet excludes meat, poultry, fish and seafood, but includes eggs, dairy and honey
- an ovo-vegetarian diet excludes meat, poultry, fish, seafood and dairy, but includes eggs and honey
- a lacto-vegetarian diet excludes meat, poultry, fish, seafood and eggs, but includes dairy and honey
- a pescatarian diet excludes meat and poultry, but includes eggs, dairy, honey, fish and seafood
- a flexitarian, or semi-vegetarian diet, includes eggs, dairy and honey and may include small amounts of meat, poultry, fish and seafood.
Are these diets healthy?
A 2023 review looked at the health effects of vegetarian and vegan diets from two types of study.
Observational studies followed people over the years to see how their diets were linked to their health. In these studies, eating a vegetarian diet was associated with a lower risk of developing cardiovascular disease (such as heart disease or a stroke), diabetes, hypertension (high blood pressure), dementia and cancer.
For example, in a study of 44,561 participants, the risk of heart disease was 32% lower in vegetarians than non-vegetarians after an average follow-up of nearly 12 years.
Further evidence came from randomised controlled trials. These instruct study participants to eat a specific diet for a specific period of time and monitor their health throughout. These studies showed eating a vegetarian or vegan diet led to reductions in weight, blood pressure, and levels of unhealthy cholesterol.
For example, one analysis combined data from seven randomised controlled trials. This so-called meta-analysis included data from 311 participants. It showed eating a vegetarian diet was associated with a systolic blood pressure (the first number in your blood pressure reading) an average 5 mmHg lower compared with non-vegetarian diets.
It seems vegetarian diets are more likely to be healthier, across a number of measures.
For example, a 2022 meta-analysis combined the results of several observational studies. It concluded a vegetarian diet, rather than vegan diet, was recommended to prevent heart disease.
There is also evidence vegans are more likely to have bone fractures than vegetarians. This could be partly due to a lower body-mass index and a lower intake of nutrients such as calcium, vitamin D and protein.
But it can be about more than just food
Many vegans, where possible, do not use products that directly or indirectly involve using animals.
So vegans would not wear leather, wool or silk clothing, for example. And they would not use soaps or candles made from beeswax, or use products tested on animals.
The motivation for following a vegan or vegetarian diet can vary from person to person. Common motivations include health, environmental, ethical, religious or economic reasons.
And for many people who follow a vegan or vegetarian diet, this forms a central part of their identity.
So, should I adopt a vegan or vegetarian diet?
If you are thinking about a vegan or vegetarian diet, here are some things to consider:
- eating more plant foods does not automatically mean you are eating a healthier diet. Hot chips, biscuits and soft drinks can all be vegan or vegetarian foods. And many plant-based alternatives, such as plant-based sausages, can be high in added salt
- meeting the nutrient intake targets for vitamin B12, iron, calcium, and iodine requires more careful planning while on a vegan or vegetarian diet. This is because meat, seafood and animal products are good sources of these vitamins and minerals
- eating a plant-based diet doesn’t necessarily mean excluding all meat and animal products. A healthy flexitarian diet prioritises eating more whole plant-foods, such as vegetables and beans, and less processed meat, such as bacon and sausages
- the Australian Dietary Guidelines recommend eating a wide variety of foods from the five food groups (fruit, vegetables, cereals, lean meat and/or their alternatives and reduced-fat dairy products and/or their alternatives). So if you are eating animal products, choose lean, reduced-fat meats and dairy products and limit processed meats.
Katherine Livingstone, NHMRC Emerging Leadership Fellow and Senior Research Fellow at the Institute for Physical Activity and Nutrition, Deakin University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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What I Wish People Knew About Dementia – by Dr. Wendy Mitchell
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We hear a lot from doctors who work with dementia patients; sometimes we hear from carers too. In this case, the author spent 20 years working for the NHS, before being diagnosed with young-onset dementia, at the age of 58. Like many health industry workers who got a life-changing diagnosis, she quickly found it wasn’t fun being on the other side of things, and vowed to spend her time researching, and raising awareness about, dementia.
Many people assume that once a person has dementia, they’re basically “gone before they’re gone”, which can rapidly become a self-fulfilling prophecy as that person finds themself isolated and—though this word isn’t usually used—objectified. Talked over, viewed (and treated) more as a problem than a person. Cared for hopefully, but again, often more as a patient than a person. If doctors struggle to find the time for the human side of things with most patients most of the time, this is only accentuated when someone needs more time and patience than average.
Instead, Dr. Mitchell—an honorary doctorate, by the way, awarded for her research—writes about what it’s actually like to be a human with dementia. Everything from her senses, how she eats, the experience of eating in care homes, the process of boiling an egg… To relationships, how care changes them, to the challenges of living alone. And communication, confusion, criticism, the language used by professionals, or how things are misrepresented in popular media. She also talks about the shifting sense of self, and brings it all together with gritty optimism.
The style is deeply personal, yet lucid and clear. While dementia is most strongly associated with memory loss and communication problems, this hasn’t affected her ability to write well (7 years into her diagnosis, in case you were wondering).
Bottom line: if you’d like to read a first-person view of dementia, then this is an excellent opportunity to understand it from the view of, as the subtitle goes, someone who knows.
Click here to check out What I Wish People Knew About Dementia, and then know those things!
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Thinking of trying a new diet? 4 questions to ask yourself before you do
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We live in a society that glorifies dieting, with around 42% of adults globally having tried to lose weight. Messages about dieting and weight loss are amplified on social media, with a never-ending cycle of weight loss fads and diet trends.
Amid often conflicting messages and misinformation, if you’re looking for diet advice online, it’s easy to become confused and overwhelmed.
So before diving into the latest weight loss trend or extreme diet, consider these four questions to help you make a more informed decision.
1. Is the diet realistic?
Have you considered the financial cost of maintaining the diet or lifestyle, and the time and resources that would be required? For example, do you need to purchase specific products, supplements, or follow a rigid meal plan?
If the diet is coming from someone who is trying to sell you something – such as a particular weight-loss product you need in order to follow the diet – this could be a particular red flag.
Many extreme diet recommendations come from a place of privilege and overlook food access, affordability, cooking skills, where you live, or even your culture and ethics.
If the diet has these sorts of issues it can lead to frustration, stress, stigmatisation and feelings of failure for the person trying to adhere to the diet. But the problem may be with the diet itself – not with you.
2. Is there evidence to support this diet?
Self-proclaimed “experts” online will often make claims focused on specific groups, known as target populations. This might be 30- to 50-year-old men with diabetes, for example.
In some cases, evidence for claims made may come from animal studies, which might not be applicable to humans at all.
So be aware that if research findings are for a group that doesn’t match your profile, then the results might not be relevant to you.
It takes time and a lot of high-quality studies to tell us a “diet” is safe and effective, not just one study. Ask yourself, is it supported by multiple studies in humans? Be critical and question the claims before you accept them.
For accurate information look for government websites, or ask your GP or dietitian.
3. How will this diet affect my life?
Food is much more than calories and nutrients. It plays many roles in our lives, and likewise diets can influence our lives in ways we often overlook.
Socially and culturally, food can be a point of connection and celebration. It can be a source of enjoyment, a source of comfort, or even a way to explore new parts of the world.
So when you’re considering a new diet, think about how it might affect meaningful moments for you. For example, if you’re going travelling, will your diet influence the food choices you make? Will you feel that you can’t sample the local cuisine? Or would you be deterred from going out for dinner with friends because of their choice of restaurant?
4. Will this diet make me feel guilty or affect my mental health?
What is your favourite meal? Does this diet “allow” you to eat it? Imagine visiting your mum who has prepared your favourite childhood meal. How will the diet affect your feelings about these special foods? Will it cause you to feel stressed or guilty about enjoying a birthday cake or a meal cooked by a loved one?
Studies have shown that dieting can negatively impact our mental health, and skipping meals can increase symptoms of depression and anxiety.
Many diets fail to consider the psychological aspects of eating, even though our mental health is just as important as physical health. Eating should not make you feel stressed, anxious, or guilty.
So before starting another diet, consider how it might affect your mental health.
Moving away from a dieting mindset
We’re frequently told that weight loss is the path to better health. Whereas, we can prioritise our health without focusing on our weight. Constant messages about the need to lose weight can also be harmful to mental health, and not necessarily helpful for physical health.
Our research has found eating in a way that prioritises health over weight loss is linked to a range of positive outcomes for our health and wellbeing. These include a more positive relationship with food, and less guilt and stress.
Our research also indicates mindful and intuitive eating practices – which focus on internal cues, body trust, and being present and mindful when eating – are related to lower levels of depression and stress, and greater body image and self-compassion.
But like anything, it takes practice and time to build a positive relationship with food. Be kind to yourself, seek out weight-inclusive health-care professionals, and the changes will come. Finally, remember you’re allowed to find joy in food.
Melissa Eaton, Accredited Practising Dietitian; PhD Candidate, University of Wollongong; Verena Vaiciurgis, Accredited Practising Dietitian; PhD Candidate, University of Wollongong, and Yasmine Probst, Associate Professor, School of Medical, Indigenous and Health Sciences, University of Wollongong
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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The Longevity Diet – by Dr. Valter Longo
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Another book with “The New Science” in its subtitle, so, is this one a new science?
Yes and no; some findings are new, many are not, what really sets this book apart from many of its genre though is that rather than focusing on fighting aging, it focuses on retaining youth. While this may seem like one and the same thing, there is a substantive difference beyond the ideological, which is: while anti-aging research focuses on what causes people to suffer age-related decline and fights each of those things, Dr. Longo’s research focuses on what is predominant in youthful bodies, cells, DNA, and looks to have more of that. Looking in a slightly different place means finding slightly different things, and knowledge is power indeed.
Dr. Longo bases his research and focus on his “5 pillars of longevity”. We’ll not keep them a mystery; they are:
- Juventology research
- Epidemiology
- Clinical studies
- Centenarian studies
- Study of complex systems
The first there (juventology research) may sound like needless jargon, but it is the counterpoint of the field of gerontology, and is otherwise something that didn’t have an established name.
You may wonder why “clinical studies” gets a separate item when the others already include studies; this is because many studies when it comes to aging and related topics are population-based studies, cohort studies, observational studies, or (as is often the case) multiple of the above at once.
Of course, all this discussion of academia is not itself practical information for the reader (unless we happen to work in the field), but it is interesting and does give confidence in the conclusions upon which the practical parts of the book are based.
And what are they? As the title suggests, it’s about diet, and specifically, it’s about Dr. Longo’s “fast-mimicking diet”, which boasts the benefits of intermittent fasting without intermittent fasting. This hinges, of course, on avoiding metabolic overload, which can be achieved with a fairly simple diet governed by the principles outlined in this book, based on the research referenced.
In the category of subjective criticism, there is quite a bit of fluff, much of it self-indulgently autobiographical and very complimentary, but its presence does not take anything away from the excellent content contained in the book.
Bottom line: if you’d like a fresh perspective on regaining/retaining youthfulness, then this is a great book to read.
Click here to check out The Longevity Diet, and stay younger!
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