3 signs your diet is causing too much muscle loss – and what to do about it
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When trying to lose weight, it’s natural to want to see quick results. So when the number on the scales drops rapidly, it seems like we’re on the right track.
But as with many things related to weight loss, there’s a flip side: rapid weight loss can result in a significant loss of muscle mass, as well as fat.
So how you can tell if you’re losing too much muscle and what can you do to prevent it?
Why does muscle mass matter?
Muscle is an important factor in determining our metabolic rate: how much energy we burn at rest. This is determined by how much muscle and fat we have. Muscle is more metabolically active than fat, meaning it burns more calories.
When we diet to lose weight, we create a calorie deficit, where our bodies don’t get enough energy from the food we eat to meet our energy needs. Our bodies start breaking down our fat and muscle tissue for fuel.
A decrease in calorie-burning muscle mass slows our metabolism. This quickly slows the rate at which we lose weight and impacts our ability to maintain our weight long term.
How to tell you’re losing too much muscle
Unfortunately, measuring changes in muscle mass is not easy.
The most accurate tool is an enhanced form of X-ray called a dual-energy X-ray absorptiometry (DXA) scan. The scan is primarily used in medicine and research to capture data on weight, body fat, muscle mass and bone density.
But while DEXA is becoming more readily available at weight-loss clinics and gyms, it’s not cheap.
There are also many “smart” scales available for at home use that promise to provide an accurate reading of muscle mass percentage.
However, the accuracy of these scales is questionable. Researchers found the scales tested massively over- or under-estimated fat and muscle mass.
Fortunately, there are three free but scientifically backed signs you may be losing too much muscle mass when you’re dieting.
1. You’re losing much more weight than expected each week
Losing a lot of weight rapidly is one of the early signs that your diet is too extreme and you’re losing too much muscle.
Rapid weight loss (of more than 1 kilogram per week) results in greater muscle mass loss than slow weight loss.
Slow weight loss better preserves muscle mass and often has the added benefit of greater fat mass loss.
One study compared people in the obese weight category who followed either a very low-calorie diet (500 calories per day) for five weeks or a low-calorie diet (1,250 calories per day) for 12 weeks. While both groups lost similar amounts of weight, participants following the very low-calorie diet (500 calories per day) for five weeks lost significantly more muscle mass.
2. You’re feeling tired and things feel more difficult
It sounds obvious, but feeling tired, sluggish and finding it hard to complete physical activities, such as working out or doing jobs around the house, is another strong signal you’re losing muscle.
Research shows a decrease in muscle mass may negatively impact your body’s physical performance.
3. You’re feeling moody
Mood swings and feeling anxious, stressed or depressed may also be signs you’re losing muscle mass.
Research on muscle loss due to ageing suggests low levels of muscle mass can negatively impact mental health and mood. This seems to stem from the relationship between low muscle mass and proteins called neurotrophins, which help regulate mood and feelings of wellbeing.
So how you can do to maintain muscle during weight loss?
Fortunately, there are also three actions you can take to maintain muscle mass when you’re following a calorie-restricted diet to lose weight.
1. Incorporate strength training into your exercise plan
While a broad exercise program is important to support overall weight loss, strength-building exercises are a surefire way to help prevent the loss of muscle mass. A meta-analysis of studies of older people with obesity found resistance training was able to prevent almost 100% of muscle loss from calorie restriction.
Relying on diet alone to lose weight will reduce muscle along with body fat, slowing your metabolism. So it’s essential to make sure you’ve incorporated sufficient and appropriate exercise into your weight-loss plan to hold onto your muscle mass stores.
But you don’t need to hit the gym. Exercises using body weight – such as push-ups, pull-ups, planks and air squats – are just as effective as lifting weights and using strength-building equipment.
Encouragingly, moderate-volume resistance training (three sets of ten repetitions for eight exercises) can be as effective as high-volume training (five sets of ten repetitions for eight exercises) for maintaining muscle when you’re following a calorie-restricted diet.
2. Eat more protein
Foods high in protein play an essential role in building and maintaining muscle mass, but research also shows these foods help prevent muscle loss when you’re following a calorie-restricted diet.
But this doesn’t mean just eating foods with protein. Meals need to be balanced and include a source of protein, wholegrain carb and healthy fat to meet our dietary needs. For example, eggs on wholegrain toast with avocado.
3. Slow your weight loss plan down
When we change our diet to 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.
Our body’s survival mechanisms want us to regain lost weight to ensure we survive the next period of famine (dieting). Research shows that more than half of the weight lost by participants is regained within two years, and more than 80% of lost weight is regained within five years.
However, a slow and steady, stepped approach to weight loss, prevents our bodies from activating defence mechanisms to defend our weight when we try to lose weight.
Ultimately, losing weight long-term comes down to making gradual changes to your lifestyle to ensure you form habits that last a lifetime.
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 Missing Links – by Drs Phillip Meade & Laura Gallagher
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This book looks at what goes wrong in projects, why it goes wrong, and how to fill in those “missing links” so that we don’t make the same mistakes that failed projects before us have made.
Using the Columbia crash (and NASA’s subsequent investigation and organizational overhaul) as an example, Drs Meade and Gallagher take us through the steps to apply NASA’s resultant model to our own projects.
The book is aimed squarely at business management, but the lessons within are applicable to any kind of project management, whether the project in question is a Fortune 500 merger or a new patio.
Bottom line is as per the blurb: “you don’t have to be a rocket scientist to apply this model to your organization to create a culture of accountability, inclusivity, and productivity.”
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The Healthiest Bread Recipe You’ll Probably Find
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It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
❝[About accidental scalding with water] Is cold water actually the best immediate treatment for a burn? Maybe there is something better, or something I should apply after the cold water.❞
If this is a case of spilled tea or similar—as in your story, which (apologies) we clipped for brevity—indeed, cold running water is best, and nothing else should be needed. It’s up to you whether you want to invest the time based on the extent of the scalding, but 10 minutes is recommended to minimize tissue damage.
If it’s a more severe scalding or burning, seek medical attention immediately. If it’s a burn to anywhere other than the airway, cold running water is still best for 10 minutes, but if you have to choose between that and professional medical attention, don’t delay the help.
If it’s a burn you’ve given 10 minutes of cold running water and it still hurts and/or has blistered, cover it in a sterile, non-adhesive dressing that extends well beyond the visible burn (because the actual damage probably extends further, and you don’t want to find this out the hard way later). If the burn is to the face, do still irrigate but not cover it; wait for help.
Do not apply any kind of cream, lotion, oil, etc. No matter how tempting, no matter where the burn is.
All of the above also goes for splashed oil, chemical burns, and electrical burns too (but obviously, make sure to get away from the electricity first).
Source: this ex-military writer was trained for this sort of thing and, suffice it to say, has dealt with more serious things than spilled tea before now.
Legal note: notwithstanding the above, we are a health science newsletter, not paramedics. Also, circumstances may differ, and best practices may change. In the case of serious injury, call emergency services first, and follow their instructions over ours.
Take care!
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How Aging Changes At 44 And Again At 60 (And What To Do About It)
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As it turns out, aging is not linear. Or rather: chronological aging may be, but biological aging isn’t, and there are parts of our life where it kicks into a different gear. This study looked at 108 people (65 of whom women) between the ages of 25 and 75, as part of a longitudinal cohort study, tracked for around 2–8 years (imprecise as not all follow-up durations were the same). They took frequent blood and urine samples, and tested them for thousands of different molecules and analyzing changes in gene expression, proteomic, blood biomarkers, and more. All things that are indicators of various kinds of health/disease, and which might seem more simple but it isn’t: aging.
Here’s what they found:
Landmark waypoints
At 44, significant changes occur in the metabolism, including notably the metabolism of carbs, caffeine, and alcohol. A large portion of this may be hormone related, as that’s a time of change not just for those undergoing the menopause, but also the andropause (not entirely analogous to the menopause, but it does usually entail a significant reduction in sex hormone production; in this case, testosterone).
However, the study authors also hypothesize that lifestyle factors may be relevant, as one’s 40s are often a stressful time, and an increase in alcohol consumption often occurs around the same time as one’s ability to metabolize it drops, resulting in further dysfunctional alcohol metabolism.
At 60, carb metabolism slows again, with big changes in glucose metabolism specifically, as well as an increased risk of cardiovascular disease, and a decline in kidney function. In case that wasn’t enough: also an increase free radical pathology, meaning a greatly increased risk of cancer. Immune function drops too.
What to do about this: the recommendation is of course to be proactive, and look after various aspects of your health before it becomes readily apparent that you need to. For example, good advice for anyone approaching 44 might be to quit alcohol, go easy on caffeine, and eat a diet that is conducive to good glucose metabolism. Similarly, good advice for anyone approaching 60 might be to do the same, and also pay close attention to keeping your kidneys healthy. Getting regular tests done is also key, including optional extras that your doctor might not suggest but you should ask for, such as blood urea nitrogen levels (biomarkers of kidney function). The more we look after each part of our body, the more they can look after us in turn, and the fewer/smaller problems we’ll have down the line.
If you, dear reader, are approaching the age 44 or 60… Be neither despondent nor complacent. We must avoid falling into the dual traps of “Well, that’s it, bad health is around the corner, nothing I can do about it; that’s nature”, vs “I’ll be fine, statistics are for other people, and don’t apply to me”.
Those are averages, and we do not have to be average. Every population has statistical outliers. But it would be hubris to think none of this will apply to us and we can just carry on regardless. So, for those of us who are approaching one of those two ages… It’s time to saddle up, knuckle down, and do our best!
For more on all of this, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Also, if you’d like to read the actual paper by Dr. Xiaotao Shen et al., here it is:
Nonlinear dynamics of multi-omics profiles during human aging ← honestly, it’s a lot clearer and more informative than the video, and also obviously discusses things in a lot more detail than we have room to here
Take care!
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What Are The “Bright Lines” Of Bright Line Eating?
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This is Dr. Susan Thompson. She’s a cognitive neuroscientist who has turned her hand to helping people to lose weight and maintain it at a lower level, using psychology to combat overeating. She is the founder of “Bright Line Eating”.
We’ll say up front: it’s not without some controversy, and we’ll address that as we go, but we do believe the ideas are worth examining, and then we can apply them or not as befits our personal lives.
What does she want us to know?
Bright Line Eating’s general goal
Dr. Thompson’s mission statement is to help people be “happy, thin, and free”.
You will note that this presupposes thinness as desirable, and presumes it to be healthy, which frankly, it’s not for everyone. Indeed, for people over a certain age, having a BMI that’s slightly into the “overweight” category is a protective factor against mortality (which is partly a flaw of the BMI system, but is an interesting observation nonetheless):
When BMI Doesn’t Quite Measure Up
Nevertheless, Dr. Thompson makes the case for the three items (happy, thin, free) coming together, which means that any miserable or unhealthy thinness is not what the approach is valuing, since it is important for “thin” to be bookended by “happy” and “free”.
What are these “bright lines”?
Bright Line Eating comes with 4 rules:
- No flour (no, not even wholegrain flour; enjoy whole grains themselves yes, but flour, no)
- No sugar (and as a tag-along to this, no alcohol) (sugars naturally found in whole foods, e.g. the sugar in an apple if eating an apple, is ok, but other kinds are not, e.g. foods with apple juice concentrate as a sweetener; no “natural raw cane sugar” etc is not allowed either; despite the name, it certainly doesn’t grow on the plant like that)
- No snacking, just three meals per day(not even eating the ingredients while cooking—which also means no taste-testing while cooking)
- Weigh all your food (have fun in restaurants—but more seriously, the idea here is to plan each day’s 3 meals to deliver a healthy macronutrient balance and a capped calorie total).
You may be thinking: “that sounds dismal, and not at all bright and cheerful, and certainly not happy and free”
The name comes from the idea that these rules are lines that one does not cross. They are “bright” lines because they should be observed with a bright and cheery demeanour, for they are the rules that, Dr. Thompson says, will make you “happy, thin, and free”.
You will note that this is completely in opposition to the expert opinion we hosted last week:
What Flexible Dieting Really Means
Dr. Thompson’s position on “freedom” is that Bright Line Eating is “very structured and takes a liberating stand against moderation”
Which may sound a bit of an oxymoron—is she really saying that we are going to be made free from freedom?
But there is some logic to it, and it’s about the freedom from having to make many food-related decisions at times when we’re likely to make bad ones:
Where does the psychology come in?
Dr. Thompson’s position is that willpower is a finite, expendable resource, and therefore we should use it judiciously.
So, much like Steve Jobs famously wore the same clothes every day because he had enough decisions to make later in the day that he didn’t want unnecessary extra decisions to make… Bright Line Eating proposes that we make certain clear decisions up front about our eating, so then we don’t have to make so many decisions (and potentially the wrong decisions) later when hungry.
You may be wondering: ”doesn’t sticking to what we decided still require willpower?”
And… Potentially. But the key here is shutting down self-negotiation.
Without clear lines drawn in advance, one must decide, “shall I have this cake or not?”, perhaps reflecting on the pros and cons, the context of the situation, the kind of day we’re having, how hungry we are, what else there is available to eat, what else we have eaten already, etc etc.
In short, there are lots of opportunities to rationalize the decision to eat the cake.
With clear lines drawn in advance, one must decide, “shall I have this cake or not?” and the answer is “no”.
So while sticking to that pre-decided “no” still may require some willpower, it no longer comes with a slew of tempting opportunities to rationalize a “yes”.
Which means a much greater success rate, both in adherence and outcomes. Here’s an 8-week interventional study and 2-year follow-up:
Bright Line Eating | Research Publications
Counterpoint: pick your own “bright lines”
Dr. Thompson is very keen on her 4 rules that have worked for her and many people, but she recognizes that they may not be a perfect fit for everyone.
So, it is possible to pick and choose our own “bright lines”; it is after all a dietary approach, not a religion. Here’s her response to someone who adopted the first 3 rules, but not the 4th:
Bright Lines as Guidelines for Weight Loss
The most important thing for Bright Line Eating, therefore, is perhaps the action of making clear decisions in advance and sticking to them, rather than seat-of-the-pantsing our diet, and with it, our health.
Want to know more from Dr. Thompson?
You might like her book, which we reviewed a while ago:
Bright Line Eating – by Dr. Susan Peirce Thompson
Enjoy!
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Undo It! – by Dr. Dean Ornish & Anne Ornish
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Of course, no lifestyle changes will magically undo Type 1 Diabetes or Cerebral Palsy.But for many chronic diseases, a lot can be done. The question is,how does one book cover them all?
As authors Dr. Dean Ornish and Anne Ornish explain, very many chronic diseases are exacerbated, or outright caused, by the same factors:
- Gene expression
- Inflammation
- Oxidative stress
This goes for chronic disease from heart disease to type 2 diabetes to cancer and many autoimmune diseases.
We cannot change our genes, but we can change our gene expression (the authors explain how). And certainly, we can control inflammation and oxidative stress.
Then first part of the book is given over to dietary considerations. If you’re a regular 10almonds reader, you won’t be too surprised at their recommendations, but you may enjoy the 70 recipes offered.
Attention is also given to exercising in ways optimized to beat chronic disease, and to other lifestyle factors.
Limiting stress is important, but the authors go further when it comes to psychological and sociological factors. Specifically, what matters most to health, when it comes to intimacy and community.
Bottom line: this is a very good guide to a comprehensive lifestyle overhaul, especially if something recently has given you cause to think “oh wow, I should really do more to avoid xyz disease”.
Click here to check out Undo It, and better yet, prevent it in advance!
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Science of Pilates – by Tracy Ward
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We’ve reviewed other books in this series, “Science of Yoga” and “Science of HIIT” (they’re great too; check them out!). What does this one add to the mix?
Pilates is a top-tier “combination exercise” insofar as it checks a lot of boxes, e.g:
- Strength—especially core strength, but also limbs
- Mobility—range of motion and resultant reduction in injury risk
- Stability—impossible without the above two things, but Pilates trains this too
- Fitness—many dynamic Pilates exercises can be performed as cardio and/or HIIT.
The author, a physiotherapist, explains (as the title promises!) the science of Pilates, with:
- the beautifully clear diagrams we’ve come to expect of this series,
- equally clear explanations, with a great balance of simplicity of terms and depth where necessary, and
- plenty of citations for the claims made, linking to lots of the best up-to-date science.
Bottom line: if you are in a position to make a little time for Pilates (if you don’t already), then there is nobody who would not benefit from reading this book.
Click here to check out Science of Pilates, and keep your body well!
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