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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When the Body Says No – by Dr. Gabor Maté
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We know that chronic stress is bad for us because of what it does to our cortisol levels, so what is the rest of this book about?
Dr. Gabor Maté is a medical doctor, heavily specialized in the impact of psychological trauma on long term physical health.
Here, he examies—as the subtitle promises—the connection between stress and disease. As it turns out, it’s not that simple.
We learn not just about the impact that stress has on our immune system (including increasing the risk of autoimmune disorders like rheumatoid arthritis), the cardiovascular system, and various other critical systems fo the body… But also:
- how environmental factors and destructive coping styles contribute to the onset of disease, and
- how traumatic events can warp people’s physical perception of pain
- how certain illnesses are associated with particular personality types.
This latter is not “astrology for doctors”, by the way. It has more to do with what coping strategies people are likely to employ, and thus what diseases become more likely to take hold.
The book has practical advice too, and it’s not just “reduce your stress”. Ideally, of course, indeed reduce your stress. But that’s a) obvious b) not always possible. Rather, Dr. Maté explains which coping strategies result in the least prevalence of disease.
In terms of writing style, the book is very much easy-reading, but be warned that (ironically) this isn’t exactly a feel-good book. There are lot of tragic stories in it. But, even those are very much well-worth reading.
Bottom line: if you (and/or a loved one) are suffering from stress, this book will give you the knowledge and understanding to minimize the harm that it will otherwise do.
Click here to check out When The Body Says No, and take good care of yourself; you’re important!
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Coach’s Plan – by Mike Kavanagh
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A sports coach’s job is to prepare a plan, give it to the player(s), and hold them accountable to it. Change the strategy if needs be, call the shots. The job of the player(s) is then to follow those instructions.
If you have trouble keeping yourself accountable, Kavanagh argues that it can be good to separate how you approach things.
Not just “coach yourself”, but put yourself entirely in the coach’s shoes, as though you were a separate person, then switch back, and follow those instructions, trusting in your coach’s guidance.
The book also provides illustrative examples and guides the reader through some potential pitfalls—for example, what happens when morning you doesn’t want to do the things that evening you decided would be best?
The absolute backbone of this method is that it takes away the paralysing self-doubt that can occur when we second-guess ourselves mid-task.
In short, this book will fire up your enthusiasm and give you a reliable fall-back for when your motivation’s flagging.
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Plant-Based Alternatives for Meat Recipes
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It’s Q&A Day at 10almonds!
Have a question or a request? We love to hear from you!
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
❝How about providing a plant-based alternative when you post meat-based recipes? I appreciate how much you advocate for veggie diets and think offering an alternative with your recipes would support that❞
Glad you’re enjoying! And yes, we do usually do that. But: pardon, we missed one (the Tuna Steak with Protein Salad) because it’d be more than a simple this-for-that substitution, we didn’t already have an alternative recipe up (as with the salmon recipes such as the Chili Hot-Bedded Salmon and Thai Green Curry Salmon Burgers).
Our recipes, by the way, will tend towards being vegan, vegetarian, or at least pescatarian. This is for several reasons:
- Good science suggests the best diet for general purpose good health is one that is mostly plants, with optional moderate amounts of fermented dairy products, fish, and/or eggs.
- Your writer here (it’s me, hi) has been vegan for many years, transitioning to such via pescatarianism and ovo-lacto vegetarianism, and so the skill of cooking meat is least fresh in my memory, meaning I’d not be confident writing about that, especially as cooking meat has the gravest health consequences for messing it up.
Note on biases: notwithstanding this writer being vegan, we at 10almonds are committed to reporting the science as it stands with no agenda besides good health. Hence, there will continue to be unbiased information about animal products’ health considerations, positive as well as negative.
See also: Do We Need Animal Products To Be Healthy?
…as well as, of course, some animal-based classics from our archives including:
We Are Such Stuff As Fish Are Made Of & Eggs: All Things In Moderation?
Finishing with one for the vegans though, you might enjoy:
Which Plant Milk? We Compare 6 Of The Most Popular
Some previous articles you might enjoy meanwhile:
- Pinpointing The Usefulness Of Acupuncture
- Science-Based Alternative Pain Relief
- Peripheral Neuropathy: How To Avoid It, Manage It, Treat It
- What Does Lion’s Mane Actually Do, Anyway?
Take care!
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Is stress turning my hair grey?
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When we start to go grey depends a lot on genetics.
Your first grey hairs usually appear anywhere between your twenties and fifties. For men, grey hairs normally start at the temples and sideburns. Women tend to start greying on the hairline, especially at the front.
The most rapid greying usually happens between ages 50 and 60. But does anything we do speed up the process? And is there anything we can do to slow it down?
You’ve probably heard that plucking, dyeing and stress can make your hair go grey – and that redheads don’t. Here’s what the science says.
Oksana Klymenko/Shutterstock What gives hair its colour?
Each strand of hair is produced by a hair follicle, a tunnel-like opening in your skin. Follicles contain two different kinds of stem cells:
- keratinocytes, which produce keratin, the protein that makes and regenerates hair strands
- melanocytes, which produce melanin, the pigment that colours your hair and skin.
There are two main types of melanin that determine hair colour. Eumelanin is a black-brown pigment and pheomelanin is a red-yellow pigment.
The amount of the different pigments determines hair colour. Black and brown hair has mostly eumelanin, red hair has the most pheomelanin, and blonde hair has just a small amount of both.
So what makes our hair turn grey?
As we age, it’s normal for cells to become less active. In the hair follicle, this means stem cells produce less melanin – turning our hair grey – and less keratin, causing hair thinning and loss.
As less melanin is produced, there is less pigment to give the hair its colour. Grey hair has very little melanin, while white hair has none left.
Unpigmented hair looks grey, white or silver because light reflects off the keratin, which is pale yellow.
Grey hair is thicker, coarser and stiffer than hair with pigment. This is because the shape of the hair follicle becomes irregular as the stem cells change with age.
Interestingly, grey hair also grows faster than pigmented hair, but it uses more energy in the process.
Can stress turn our hair grey?
Yes, stress can cause your hair to turn grey. This happens when oxidative stress damages hair follicles and stem cells and stops them producing melanin.
Oxidative stress is an imbalance of too many damaging free radical chemicals and not enough protective antioxidant chemicals in the body. It can be caused by psychological or emotional stress as well as autoimmune diseases.
Environmental factors such as exposure to UV and pollution, as well as smoking and some drugs, can also play a role.
Melanocytes are more susceptible to damage than keratinocytes because of the complex steps in melanin production. This explains why ageing and stress usually cause hair greying before hair loss.
Scientists have been able to link less pigmented sections of a hair strand to stressful events in a person’s life. In younger people, whose stems cells still produced melanin, colour returned to the hair after the stressful event passed.
4 popular ideas about grey hair – and what science says
1. Does plucking a grey hair make more grow back in its place?
No. When you pluck a hair, you might notice a small bulb at the end that was attached to your scalp. This is the root. It grows from the hair follicle.
Plucking a hair pulls the root out of the follicle. But the follicle itself is the opening in your skin and can’t be plucked out. Each hair follicle can only grow a single hair.
It’s possible frequent plucking could make your hair grey earlier, if the cells that produce melanin are damaged or exhausted from too much regrowth.
2. Can my hair can turn grey overnight?
Legend says Marie Antoinette’s hair went completely white the night before the French queen faced the guillotine – but this is a myth.
It is not possible for hair to turn grey overnight, as in the legend about Marie Antoinette. Yann Caradec/Wikimedia, CC BY-NC-SA Melanin in hair strands is chemically stable, meaning it can’t transform instantly.
Acute psychological stress does rapidly deplete melanocyte stem cells in mice. But the effect doesn’t show up immediately. Instead, grey hair becomes visible as the strand grows – at a rate of about 1 cm per month.
Not all hair is in the growing phase at any one time, meaning it can’t all go grey at the same time.
3. Will dyeing make my hair go grey faster?
This depends on the dye.
Temporary and semi-permanent dyes should not cause early greying because they just coat the hair strand without changing its structure. But permanent products cause a chemical reaction with the hair, using an oxidising agent such as hydrogen peroxide.
Accumulation of hydrogen peroxide and other hair dye chemicals in the hair follicle can damage melanocytes and keratinocytes, which can cause greying and hair loss.
4. Is it true redheads don’t go grey?
People with red hair also lose melanin as they age, but differently to those with black or brown hair.
This is because the red-yellow and black-brown pigments are chemically different.
Producing the brown-black pigment eumelanin is more complex and takes more energy, making it more susceptible to damage.
Producing the red-yellow pigment (pheomelanin) causes less oxidative stress, and is more simple. This means it is easier for stem cells to continue to produce pheomelanin, even as they reduce their activity with ageing.
With ageing, red hair tends to fade into strawberry blonde and silvery-white. Grey colour is due to less eumelanin activity, so is more common in those with black and brown hair.
Your genetics determine when you’ll start going grey. But you may be able to avoid premature greying by staying healthy, reducing stress and avoiding smoking, too much alcohol and UV exposure.
Eating a healthy diet may also help because vitamin B12, copper, iron, calcium and zinc all influence melanin production and hair pigmentation.
Theresa Larkin, Associate Professor of Medical Sciences, University of Wollongong
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Stop Cancer 20 Years Ago
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Get Abreast And Keep Abreast
This is Dr. Jenn Simmons. Her specialization is integrative oncology, as she—then a breast cancer surgeon—got breast cancer, decided the system wasn’t nearly as good from the patients’ side of things as from the doctors’ side, and took to educate herself, and now others, on how things can be better.
What does she want us to know?
Start now
If you have breast cancer, the best time to start adjusting your lifestyle might be 20 years ago, but the second-best time is now. We realize our readers with breast cancer (or a history thereof) probably have indeed started already—all strength to you.
What this means for those of us without breast cancer (or a history therof) is: start now
Even if you don’t have a genetic risk factor, even if there’s no history of it in your family, there’s just no reason not to start now.
Start what, you ask? Taking away its roots. And how?
Inflammation as the root of cancer
To oversimplify: cancer occurs because an accidentally immortal cell replicates and replicates and replicates and takes any nearby resources to keep on going. While science doesn’t know all the details of how this happens, it is a factor of genetic mutation (itself a normal process, without which evolution would be impossible), something which in turn is accelerated by damage to the DNA. The damage to the DNA? That occurs (often as not) as a result of cellular oxidation. Cellular oxidation is far from the only genotoxic thing out there, and a lot of non-food “this thing causes cancer” warnings are usually about other kinds of genotoxicity. But cellular oxidation is a big one, and it’s one that we can fight vigorously with our lifestyle.
Because cellular oxidation and inflammation go hand-in-hand, reducing one tends to reduce the other. That’s why so often you’ll see in our Research Review Monday features, a line that goes something like:
“and now for those things that usually come together: antioxidant, anti-inflammatory, anticancer, and anti-aging”
So, fight inflammation now, and have a reduced risk of a lot of other woes later.
See: How to Prevent (or Reduce) Inflammation
Don’t settle for “normal”
People are told, correctly but not always helpfully, such things as:
- It’s normal to have less energy at your age
- It’s normal to have a weaker immune system at your age
- It’s normal to be at a higher risk of diabetes, heart disease, etc
…and many more. And these things are true! But that doesn’t mean we have to settle for them.
We can be all the way over on the healthy end of the distribution curve. We can do that!
(so can everyone else, given sufficient opportunity and resources, because health is not a zero-sum game)
If we’re going to get a cancer diagnosis, then our 60s are the decade where we’re most likely to get it. Earlier than that and the risk is extant but lower; later than that and technically the risk increases, but we probably got it already in our 60s.
So, if we be younger than 60, then now’s a good time to prepare to hit the ground running when we get there. And if we missed that chance, then again, the second-best time is now:
See: Focusing On Health In Our Sixties
Fast to live
Of course, anything can happen to anyone at any age (alas), but this is about the benefits of living a fasting lifestyle—that is to say, not just fasting for a 4-week health kick or something, but making it one’s “new normal” and just continuing it for life.
This doesn’t mean “never eat”, of course, but it does mean “practice intermittent fasting, if you can”—something that Dr. Simmons strongly advocates.
See: Intermittent Fasting: We Sort The Science From The Hype
While this calls back to the previous “fight inflammation”, it deserves its own mention here as a very specific way of fighting it.
It’s never too late
All of the advices that go before a cancer diagnosis, continue to stand afterwards too. There is no point of “well, I already have cancer, so what’s the harm in…?”
The harm in it after a diagnosis will be the same as the harm before. When it comes to lifestyle, preventing a cancer and preventing it from spreading are very much the same thing, which is also the same as shrinking it. Basically, if it’s anticancer, it’s anticancer, no matter whether it’s before, during, or after.
Dr. Simmons has seen too many patients get a diagnosis, and place their lives squarely in the hands of doctors, when doctors can only do so much.
Instead, Dr. Simmons recommends taking charge of your health as best you are able, today and onwards, no matter what. And that means two things:
- Knowing stuff
- Doing stuff
So it becomes our responsibility (and our lifeline) to educate ourselves, and take action accordingly.
Want to know more?
We recently reviewed her book, and heartily recommend it:
The Smart Woman’s Guide to Breast Cancer – by Dr. Jenn Simmons
Enjoy!
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How To Reduce Or Quit Alcohol
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Rethinking Drinking
When we’re looking at certain health risks, there are often five key lifestyle factors that have a big impact; they are:
- Have a good diet
- Get good exercise
- Get good sleep
- Reduce (or eliminate) alcohol
- Don’t smoke
Today, we’re focussing the alcohol bit. Maybe you’d like to quit, maybe just cut down, maybe the topic just interests you… So, here’s a quick rundown of some things that will help make that a lot easier:
With a big enough “why”, you can overcome any “how”
Research and understand the harm done by drinking, including:
And especially as we get older, memory problems:
Alcohol-related dementia: an update of the evidence
And as for fear of missing out, or perhaps even of no longer being relaxed/fun… Did you ever, while sober, have a very drunk person try to converse with you, and you thought “I wish that were me”?
Probably not
Know your triggers
Why do you drink? If your knee-jerk response is “because I like it”, dig deeper. What events prompt you to have a drink?
- Some will be pure habit born of convention—perhaps with a meal, for example
- Others may be stress-management—after work, perhaps
- Others may be pseudo-medicinal—a nightcap for better* sleep, for instance
*this will not work. Alcohol may make us sleepy but it will then proceed to disrupt that very sleep and make it less restorative
Become mindful
Now that you know why you’d like to drink less (or quit entirely), and you know what triggers you to drink, you can circumvent that a little, by making deals with yourself, for example
- “I can drink alcohol, if and only if I have consumed a large glass of water first” (cuts out being thirsty as a trigger to drink)
- “I can drink alcohol, if and only if I meditate for at least 5 minutes first” (reduces likelihood of stress-drinking)
- “I can drink alcohol, if and only if it is with the largest meal of the day” (minimizes total alcohol consumption)
Note that these things also work around any FOMO, “Fear Of Missing Out”. It’s easier to say “no” when you know you can have it later if you still want it.
Get a good replacement drink
There are a lot of alcohol-free alcohol-like drinks around these days, and many of them are very good. Experiment and see. But!
It doesn’t even have to be that. Sometimes what we need is not even an alcohol-like drink, but rather, drinkable culinary entertainment.
If you like “punch-in-the-face” flavors (as this writer does), maybe strong black coffee is the answer. If you like “crisp and clear refreshment” (again, same), maybe your favorite herbal tea will do it for you. Or maybe for you it’ll be lemon-water. Or homemade ginger ale.
Whatever it is… make it fun, and make it yours!
Bonus item: find replacement coping strategies
This one goes if you’ve been using alcohol to cope with something. Stress, depression, anxiety, whatever it may be for you.
The thing is, it feels like it helps briefly in the moment, but it makes each of those things progressively worse in the long-run, so it’s not sustainable.
Consider instead things like therapy, exercise, and/or a new hobby to get immersed in; whatever works for you!
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