No, sugar doesn’t make your kids hyperactive
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It’s a Saturday afternoon at a kids’ birthday party. Hordes of children are swarming between the spread of birthday treats and party games. Half-eaten cupcakes, biscuits and lollies litter the floor, and the kids seem to have gained superhuman speed and bounce-off-the-wall energy. But is sugar to blame?
The belief that eating sugary foods and drinks leads to hyperactivity has steadfastly persisted for decades. And parents have curtailed their children’s intake accordingly.
Balanced nutrition is critical during childhood. As a neuroscientist who has studied the negative effects of high sugar “junk food” diets on brain function, I can confidently say excessive sugar consumption does not have benefits to the young mind. In fact, neuroimaging studies show the brains of children who eat more processed snack foods are smaller in volume, particularly in the frontal cortices, than those of children who eat a more healthful diet.
But today’s scientific evidence does not support the claim sugar makes kids hyperactive.
The hyperactivity myth
Sugar is a rapid source of fuel for the body. The myth of sugar-induced hyperactivity can be traced to a handful of studies conducted in the 1970s and early 1980s. These were focused on the Feingold Diet as a treatment for what we now call Attention Deficit Hyperactivity Disorder (ADHD), a neurodivergent profile where problems with inattention and/or hyperactivity and impulsivity can negatively affect school, work or relationships.
Devised by American paediatric allergist Benjamin Feingold, the diet is extremely restrictive. Artificial colours, sweeteners (including sugar) and flavourings, salicylates including aspirin, and three preservatives (butylated hydroxyanisole, butylated hydroxytoluene, and tert-Butrylhdryquinone) are eliminated.
Salicylates occur naturally in many healthy foods, including apples, berries, tomatoes, broccoli, cucumbers, capsicums, nuts, seeds, spices and some grains. So, as well as eliminating processed foods containing artificial colours, flavours, preservatives and sweeteners, the Feingold diet eliminates many nutritious foods helpful for healthy development.
However, Feingold believed avoiding these ingredients improved focus and behaviour. He conducted some small studies, which he claimed showed a large proportion of hyperactive children responded favourably to his diet.
Flawed by design
The methods used in the studies were flawed, particularly with respect to adequate control groups (who did not restrict foods) and failed to establish a causal link between sugar consumption and hyperactive behaviour.
Subsequent studies suggested less than 2% responded to restrictions rather than Feingold’s claimed 75%. But the idea still took hold in the public consciousness and was perpetuated by anecdotal experiences.
Fast forward to the present day. The scientific landscape looks vastly different. Rigorous research conducted by experts has consistently failed to find a connection between sugar and hyperactivity. Numerous placebo-controlled studies have demonstrated sugar does not significantly impact children’s behaviour or attention span.
One landmark meta-analysis study, published almost 20 years ago, compared the effects of sugar versus a placebo on children’s behaviour across multiple studies. The results were clear: in the vast majority of studies, sugar consumption did not lead to increased hyperactivity or disruptive behaviour.
Subsequent research has reinforced these findings, providing further evidence sugar does not cause hyperactivity in children, even in those diagnosed with ADHD.
While Feingold’s original claims were overstated, a small proportion of children do experience allergies to artificial food flavourings and dyes.
Pre-school aged children may be more sensitive to food additives than older children. This is potentially due to their smaller body size, or their still-developing brain and body.
Hooked on dopamine?
Although the link between sugar and hyperactivity is murky at best, there is a proven link between the neurotransmitter dopamine and increased activity.
The brain releases dopamine when a reward is encountered – such as an unexpected sweet treat. A surge of dopamine also invigorates movement – we see this increased activity after taking psychostimulant drugs like amphetamine. The excited behaviour of children towards sugary foods may be attributed to a burst of dopamine released in expectation of a reward, although the level of dopamine release is much less than that of a psychostimulant drug.
Dopamine function is also critically linked to ADHD, which is thought to be due to diminished dopamine receptor function in the brain. Some ADHD treatments such as methylphenidate (labelled Ritalin or Concerta) and lisdexamfetamine (sold as Vyvanse) are also psychostimulants. But in the ADHD brain the increased dopamine from these drugs recalibrates brain function to aid focus and behavioural control.
Why does the myth persist?
The complex interplay between diet, behaviour and societal beliefs endures. Expecting sugar to change your child’s behaviour can influence how you interpret what you see. In a study where parents were told their child had either received a sugary drink, or a placebo drink (with a non-sugar sweetener), those parents who expected their child to be hyperactive after having sugar perceived this effect, even when they’d only had the sugar-free placebo.
The allure of a simple explanation – blaming sugar for hyperactivity – can also be appealing in a world filled with many choices and conflicting voices.
Healthy foods, healthy brains
Sugar itself may not make your child hyperactive, but it can affect your child’s mental and physical health. Rather than demonising sugar, we should encourage moderation and balanced nutrition, teaching children healthy eating habits and fostering a positive relationship with food.
In both children and adults, the World Health Organization (WHO) recommends limiting free sugar consumption to less than 10% of energy intake, and a reduction to 5% for further health benefits. Free sugars include sugars added to foods during manufacturing, and naturally present sugars in honey, syrups, fruit juices and fruit juice concentrates.
Treating sugary foods as rewards can result in them becoming highly valued by children. Non-sugar rewards also have this effect, so it’s a good idea to use stickers, toys or a fun activity as incentives for positive behaviour instead.
While sugar may provide a temporary energy boost, it does not turn children into hyperactive whirlwinds.
Amy Reichelt, Senior Lecturer (Adjunct), Nutritional neuroscientist, University of Adelaide
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Unprocessed – by Kimberly Wilson
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First, what this is not: hundreds of pages to say “eat less processed food”. That is, of course, also advisable (and indeed, is advised in the book too), but there’s a lot more going on here too.
Though not a doctor, the author is a psychologist who brings a lot of data to the table, especially when it comes to the neurophysiology at hand, what forgotten micronutrients many people are lacking, and what trends in society worsen these deficiencies in the population at large.
If you only care about the broadest of take-away advice, it is: eat a diet that’s mostly minimally processed plants and some oily fish, watch out for certain deficiencies in particular, and increase dietary intake of them where necessary (with taking supplements as a respectable next-best remedy).
On which note, a point of criticism is that there’s some incorrect information about veganism and brain health; she mentions that DHA is only found in fish (in fact, fish get it from algae, which has it, and is the basis of many vegan omega-3 supplements), and the B12 is found only in animals (also found in yeast, which is not an animal, as well as various bacteria in soil, and farm animals get their B12 from supplements these days anyway, so it is arguable that we could keep things simpler by just cutting out the middlecow).
However, the strength of this book really is in the delivery of understanding about why certain things matter. If you’re told “such-and-such is good for the brain”, you’ll up your intake for 1–60 days, depending on whether you bought a supermarket item or ordered a batch of supplements. And then you’ll forget, until 6–12 months later, and you’ll do it again. On the other hand, if you understand how something is good or bad for the brain, what it does (for good or ill) on a cellular level, the chemistry and neurophysiology at hand, you’ll make new habits for life.
The style is middle-range pop-science; by this we mean there are tables of data and some long words that are difficult to pronounce, but also it’s not just hard science throughout—there’s (as one might expect from an author who is a psychologist) a lot about the psychology and sociology of why many people make poor dietary decisions, and the things governments often do (or omit doing) that affect this adversely—and how we can avoid those traps as individuals (unless we be incarcerated or such).
As an aside, the author is British, so governmental examples are mostly UK-based, but it doesn’t take a lot to mentally measure that against what the governments of, for example, the US or Canada do the same or differently.
Bottom line: there’s a lot of great information about brain health here; the strongest parts are whether the author stays within her field (psychology encompasses such diverse topics as neurophysiology and aspects of sociology, but not microbiology, for example). If you want to learn about the physiology of brain health and enjoy quite a sociopolitical ride along the way, this one’s a good one for that.
Click here to check out Unprocessed, and make the best choices for you!
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Heart Rate Zones, Oxalates, & More
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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
❝I think the heart may be an issue for lots of us. I know it is for me due to AFib. When I’m in my training zone like on a treadmill, I’m usually around 110 to 120. But there are occasionally times when I’m at 140 or 150. How dangerous is that? If I use that formula of 180 minus age, thats 103. I get nothing from that. My resting heart rate is in the 50 to 60 range.❞
First, for safety, let us draw attention to our medical disclaimer at the bottom of each email, and also specifically note that we are not cardiologists here, let alone your cardiologist. There’s a lot we can’t know or advise about. However, as general rules of thumb:
For people without serious health conditions, it is considered good and healthful for one’s heart rate to double (from its resting rate) during exercise, with even more than 2.5x resting rate being nothing more than a good cardio workout.
As for “180 minus age” (presuming you mean: to calculate the safe maximum heart rate), more common (and used by the American Heart Association) is 220 minus age. In your case, that’d give 143.
Having atrial fibrillation may change this however, and we can’t offer medical advice.
We can point to this AHA “AFib Resources For Patients and Professionals”, including this handy FAQ sheet which says:
“Am I able to exercise?” / “Yes, as long as you’re cleared by your doctor, you can perform normal activities of daily living that you can tolerate” (accompanied by a little graphic of a person using an exercise bike)
You personally probably know this already, of course, but it’s quite an extensive collection of resources, so we thought we’d include it.
It’s certainly a good idea for everyone to be aware of their healthy heart rate ranges, regardless of having a known heart condition or not, though!
American Heart Association: Target Heart Rates Chart
❝I would like to see some articles on osteoporosis❞
You might enjoy this mythbusting main feature we did a few weeks ago!
The Bare-Bones Truth About Osteoporosis
❝Interesting, but… Did you know spinach is high in oxylates? Some people are sensitive and can cause increased inflammation, joint pain or even kidney stones. Moderation is key. My sister and I like to eat healthy but found out by experience that too much spinach salad caused us joint and other aches.❞
It’s certainly good to be mindful of such things! For most people, a daily serving of spinach shouldn’t cause ill effects, and certainly there are other greens to eat.
We wondered whether there was a way to reduce the oxalate content, and we found:
How to Reduce Oxalic Acid in Spinach: Neutralizing Oxalates
…which led us this product on Amazon:
Nephure Oxalate Reducing Enzyme, Low Oxalate Diet Support
We wondered what “nephure” was, and whether it could be trusted, and came across this “Supplement Police” article about it:
Nephure Review – Oxalate Reducing Enzyme Powder Health Benefits?
…which honestly, seems to have been written as a paid advertisement. But! It did reference a study, which we were able to look up, and find:
In vitro and in vivo safety evaluation of Nephure™
…which seems to indicate that it was safe (for rats) in all the ways that they checked. They did not, however, check whether it actually reduced oxalate content in spinach or any other food.
The authors did declare a conflict of interest, in that they had a financial relationship with the sponsor of the study, Captozyme Inc.
All in all, it may be better to just have kale instead of spinach:
- 20 Foods High in Oxalates to Limit if You Have Kidney Stones
- The Kidney Dietician: The Best Low Oxalate Greens
We turn the tables and ask you a question!
We’ll then talk about this tomorrow:
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Anti-Cholesterol Cardamom & Pistachio Porridge
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This tasty breakfast’s beta-glucan content binds to cholesterol and carries it out of the body; there are lots of other nutritional benefits too!
You will need
- 1 cup coconut milk
- ⅓ cup oats
- 4 tbsp crushed pistachios
- 6 cardamom pods, crushed
- 1 tsp rose water or 4 drops edible rose essential oil
- Optional sweetener: drizzle of honey or maple syrup
- Optional garnishes: rose petals, chopped nuts, dried fruit
Method
(we suggest you read everything at least once before doing anything)
1) Heat the coconut milk, adding the oats and crushed cardamom pods. Simmer for 5–10 minutes depending on how cooked you want the oats to be.
2) Stir in the crushed pistachio nuts, as well as the rose water.
3) Serve in a bowl, adding any optional toppings:
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- The Best Kind Of Fiber For Overall Health? ← it’s beta-glucan, which is fund abundantly in oats
- Pistachios vs Pecans – Which is Healthier? ← have a guess
- Can Saturated Fats Be Healthy? ← coconut can!
Take care!
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Unfuck Your Brain – by Dr. Faith Harper
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This book takes a trauma-informed care approach, which is relatively novel in the mental health field and it’s quickly becoming the industry standard because of its effectiveness.
The basic premise of trauma-informed care is that you had a bad experience (possibly even more than one—what a thought!) and that things that remind you of that will tend to prompt reactivity from you in a way that probably isn’t healthy. By identifying each part of that process, we can then interrupt it, much like we might with CBT (the main difference being that CBT, for all its effectiveness, tends to assume that the things that are bothering you are not true, while TIC acknowledges that they might well be, and that especially historically, they probably were).
A word of warning: if something that triggers a trauma-based reactivity response in you is people swearing, then this book will either cure you by exposure therapy or leave you a nervous wreck, because it’s not just the title; Dr. Harper barely gets through a sentence without swearing. It’s a lot, even by this (European) reviewer’s standards (we’re a lot more relaxed about swearing over here, than people tend to be in America).
On the other hand, something that Dr. Harper excels at is actually explaining stuff very well. So while it sometimes seems like she’s “trying too hard” style-wise in terms of being “not like other therapists”, in her defence she’s nevertheless a very good writer; she knows her stuff, and knows how to communicate it clearly.
Bottom line: if you don’t mind a writer who swears more than 99% of soldiers, then this book is an excellent how-to guide for self-administered trauma-informed care.
Click here to check out Unfuck Your Brain, and indeed unfuck it!
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California Becomes Latest State To Try Capping Health Care Spending
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California’s Office of Health Care Affordability faces a herculean task in its plan to slow runaway health care spending.
The goal of the agency, established in 2022, is to make care more affordable and accessible while improving health outcomes, especially for the most disadvantaged state residents. That will require a sustained wrestling match with a sprawling, often dysfunctional health system and powerful industry players who have lots of experience fighting one another and the state.
Can the new agency get insurers, hospitals, and medical groups to collaborate on containing costs even as they jockey for position in the state’s $405 billion health care economy? Can the system be transformed so that financial rewards are tied more to providing quality care than to charging, often exorbitantly, for a seemingly limitless number of services and procedures?
The jury is out, and it could be for many years.
California is the ninth state — after Connecticut, Delaware, Massachusetts, Nevada, New Jersey, Oregon, Rhode Island, and Washington — to set annual health spending targets.
Massachusetts, which started annual spending targets in 2013, was the first state to do so. It’s the only one old enough to have a substantial pre-pandemic track record, and its results are mixed: The annual health spending increases were below the target in three of the first five years and dropped beneath the national average. But more recently, health spending has greatly increased.
In 2022, growth in health care expenditures exceeded Massachusetts’ target by a wide margin. The Health Policy Commission, the state agency established to oversee the spending control efforts, warned that “there are many alarming trends which, if unaddressed, will result in a health care system that is unaffordable.”
Neighboring Rhode Island, despite a preexisting policy of limiting hospital price increases, exceeded its overall health care spending growth target in 2019, the year it took effect. In 2020 and 2021, spending was largely skewed by the pandemic. In 2022, the spending increase came in at half the state’s target rate. Connecticut and Delaware, by contrast, both overshot their 2022 targets.
It’s all a work in progress, and California’s agency will, to some extent, be playing it by ear in the face of state policies and demographic realities that require more spending on health care.
And it will inevitably face pushback from the industry as it confronts unreasonably high prices, unnecessary medical treatments, overuse of high-cost care, administrative waste, and the inflationary concentration of a growing number of hospitals in a small number of hands.
“If you’re telling an industry we need to slow down spending growth, you’re telling them we need to slow down your revenue growth,” says Michael Bailit, president of Bailit Health, a Massachusetts-based consulting group, who has consulted for various states, including California. “And maybe that’s going to be heard as ‘we have to restrain your margins.’ These are very difficult conversations.”
Some of California’s most significant health care sectors have voiced disagreement with the fledgling affordability agency, even as they avoid overtly opposing its goals.
In April, when the affordability office was considering an annual per capita spending growth target of 3%, the California Hospital Association sent it a letter saying hospitals “stand ready to work with” the agency. But the proposed number was far too low, the association argued, because it failed to account for California’s aging population, new investments in Medi-Cal, and other cost pressures.
The hospital group suggested a spending increase target averaging 5.3% over five years, 2025-29. That’s slightly higher than the 5.2% average annual increase in per capita health spending over the five years from 2015 to 2020.
Five days after the hospital association sent its letter, the affordability board approved a slightly less aggressive target that starts at 3.5% in 2025 and drops to 3% by 2029. Carmela Coyle, the association’s chief executive, said in a statement that the board’s decision still failed to account for an aging population, the growing need for mental health and addiction treatment, and a labor shortage.
The California Medical Association, which represents the state’s doctors, expressed similar concerns. The new phased-in target, it said, was “less unreasonable” than the original plan, but the group would “continue to advocate against an artificially low spending target that will have real-life negative impacts on patient access and quality of care.”
But let’s give the state some credit here. The mission on which it is embarking is very ambitious, and it’s hard to argue with the motivation behind it: to interject some financial reason and provide relief for millions of Californians who forgo needed medical care or nix other important household expenses to afford it.
Sushmita Morris, a 38-year-old Pasadena resident, was shocked by a bill she received for an outpatient procedure last July at the University of Southern California’s Keck Hospital, following a miscarriage. The procedure lasted all of 30 minutes, Morris says, and when she received a bill from the doctor for slightly over $700, she paid it. But then a bill from the hospital arrived, totaling nearly $9,000, and her share was over $4,600.
Morris called the Keck billing office multiple times asking for an itemization of the charges but got nowhere. “I got a robotic answer, ‘You have a high-deductible plan,’” she says. “But I should still receive a bill within reason for what was done.” She has refused to pay that bill and expects to hear soon from a collection agency.
The road to more affordable health care will be long and chock-full of big challenges and unforeseen events that could alter the landscape and require considerable flexibility.
Some flexibility is built in. For one thing, the state cap on spending increases may not apply to health care institutions, industry segments, or geographic regions that can show their circumstances justify higher spending — for example, older, sicker patients or sharp increases in the cost of labor.
For those that exceed the limit without such justification, the first step will be a performance improvement plan. If that doesn’t work, at some point — yet to be determined — the affordability office can levy financial penalties up to the full amount by which an organization exceeds the target. But that is unlikely to happen until at least 2030, given the time lag of data collection, followed by conversations with those who exceed the target, and potential improvement plans.
In California, officials, consumer advocates, and health care experts say engagement among all the players, informed by robust and institution-specific data on cost trends, will yield greater transparency and, ultimately, accountability.
Richard Kronick, a public health professor at the University of California-San Diego and a member of the affordability board, notes there is scant public data about cost trends at specific health care institutions. However, “we will know that in the future,” he says, “and I think that knowing it and having that information in the public will put some pressure on those organizations.”
This article was produced by KFF Health News, which publishes California Healthline, an editorially independent service of the California Health Care Foundation.
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.
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An unbroken night’s sleep is a myth. Here’s what good sleep looks like
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What do you imagine a good night’s sleep to be?
Often when people come into our sleep clinic seeking treatment, they share ideas about healthy sleep.
Many think when their head hits the pillow, they should fall into a deep and restorative sleep, and emerge after about eight hours feeling refreshed. They’re in good company – many Australians hold the same belief.
In reality, healthy sleep is cyclic across the night, as you move in and out of the different stages of sleep, often waking up several times. Some people remember one or more of these awakenings, others do not. Let’s consider what a healthy night’s sleep looks like.
Sleep cycles are a roller-coaster
As an adult, our sleep moves through different cycles and brief awakenings during the night. Sleep cycles last roughly 90 minutes each.
We typically start the night with lighter sleep, before moving into deeper sleep stages, and rising again into rapid eye movement (REM) sleep – the stage of sleep often linked to vivid dreaming.
If sleeping well, we get most of our deep sleep in the first half of the night, with REM sleep more common in the second half of the night.
Adults usually move through five or six sleep cycles in a night, and it is entirely normal to wake up briefly at the end of each one. That means we might be waking up five times during the night. This can increase with older age and still be healthy. If you’re not remembering these awakenings that’s OK – they can be quite brief.
What does getting a ‘good’ sleep actually mean?
You’ll often hear that adults need between seven and nine hours of sleep per night. But good sleep is about more than the number of hours – it’s also about the quality.
For most people, sleeping well means being able to fall asleep soon after getting into bed (within around 30 minutes), sleeping without waking up for long periods, and waking feeling rested and ready for the day.
You shouldn’t be feeling excessively sleepy during the day, especially if you’re regularly getting at least seven hours of refreshing sleep a night (this is a rough rule of thumb).
But are you noticing you’re feeling physically tired, needing to nap regularly and still not feeling refreshed? It may be worthwhile touching base with your general practitioner, as there a range of possible reasons.
Common issues
Sleep disorders are common. Up to 25% of adults have insomnia, a sleep disorder where it may be hard to fall or stay asleep, or you may wake earlier in the morning than you’d like.
Rates of common sleep disorders such as insomnia and sleep apnoea – where your breathing can partially or completely stop many times during the night – also increase with age, affecting 20% of early adults and 40% of people in middle age. There are effective treatments, so asking for help is important.
Beyond sleep disorders, our sleep can also be disrupted by chronic health conditions – such as pain – and by certain medications.
There can also be other reasons we’re not sleeping well. Some of us are woken by children, pets or traffic noise during the night. These “forced awakenings” mean we may find it harder to get up in the morning, take longer to leave bed and feel less satisfied with our sleep. For some people, night awakenings may have no clear cause.
A good way to tell if these awakenings are a problem for you is by thinking about how they affect you. When they cause feelings of frustration or worry, or are impacting how we feel and function during the day, it might be a sign to seek some help.
We also may struggle to get up in the morning. This could be for a range of reasons, including not sleeping long enough, going to bed or waking up at irregular times – or even your own internal clock, which can influence the time your body prefers to sleep.
If you’re regularly struggling to get up for work or family needs, it can be an indication you may need to seek help. Some of these factors can be explored with a sleep psychologist if they are causing concern.
Can my smart watch help?
It is important to remember sleep-tracking devices can vary in accuracy for looking at the different sleep stages. While they can give a rough estimate, they are not a perfect measure.
In-laboratory polysomnography, or PSG, is the best standard measure to examine your sleep stages. A PSG examines breathing, oxygen saturation, brain waves and heart rate during sleep.
Rather than closely examining nightly data (including sleep stages) from a sleep tracker, it may be more helpful to look at the patterns of your sleep (bed and wake times) over time.
Understanding your sleep patterns may help identify and adjust behaviours that negatively impact your sleep, such as your bedtime routine and sleeping environment.
And if you find viewing your sleep data is making you feel worried about your sleep, this may not be useful for you. Most importantly, if you are concerned it is important to discuss it with your GP who can refer you to the appropriate specialist sleep health provider.
Amy Reynolds, Associate Professor in Clinical Sleep Health, Flinders University; Claire Dunbar, Research Associate, Sleep Health, Flinders University; Gorica Micic, Postdoctoral Research Fellow, Clinical Psychologist, Flinders University; Hannah Scott, Research Fellow in Sleep Health, Flinders University, and Nicole Lovato, Associate Professor, Adelaide Institute for Sleep Health, Flinders University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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