
Blueberries vs Banana – Which is Healthier?
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Our Verdict
When comparing blueberries to banana, we picked the banana.
Why?
Surprise, that which is more expensive is not always commensurately more healthy! A lot of the price difference between bananas and blueberries comes down to:
- ease of transport (unripe bananas can be transported quite easily without too much risk of bruising; unripe blueberries can’t even be usefully picked)
- shelf-life (unripe bananas will take their time to ripen; the already-ripe blueberries will often go bad very quickly)
For this reason, frozen blueberries are a great option for budget-friendly berries. But, onto the comparisons:
In terms of macros, bananas have slightly more protein, carbs, and fiber, and the slightly lower glycemic index. Really, both are good, but by the numbers, bananas win.
When it comes to vitamins, blueberries have more of vitamins B1, C, E, and K, while bananas have more of vitamins A, B2, B3, B5, B6, B9, and choline. Another win for bananas, though of course we could quibble which vitamins are most likely to be not found in sufficient abundance in the rest of one’s diet, but as it is, we just compared the nutrients head-to-head without trying to guess the rest of someone’s diet.
In the category of minerals, blueberries have more calcium and manganese, while bananas have more copper, magnesium, phosphorus, potassium, and selenium. Another win for bananas.
As for polyphenols, this is where blueberries shine, with a lot more than bananas (difficult to calculate exactly due to variations, but, in the order of hundreds of times more). A win for blueberries this time.
Adding up the section gives us an overall win for bananas, but by all means enjoy either or both; perhaps even together!
Want to learn more?
You might like to read:
Blueberry & Banana Collagen Baked Oats ← You will love this recipe! And… Good news for vegans/vegetarians: while we include an optional tablespoon of collagen powder in this recipe, the whole recipe is already geared around collagen synthesis, so it’s very collagen-boosting even with just the plants, providing collagen’s building blocks of protein, zinc, and vitamins C and D (your miraculous body will use these to assemble the collagen inside you).
Enjoy!
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Alpha, beta, theta: what are brain states and brain waves? And can we control them?
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There’s no shortage of apps and technology that claim to shift the brain into a “theta” state – said to help with relaxation, inward focus and sleep.
But what exactly does it mean to change one’s “mental state”? And is that even possible? For now, the evidence remains murky. But our understanding of the brain is growing exponentially as our methods of investigation improve.
Brain-measuring tech is evolving
Currently, no single approach to imaging or measuring brain activity gives us the whole picture. What we “see” in the brain depends on which tool we use to “look”. There are myriad ways to do this, but each one comes with trade-offs.
We learnt a lot about brain activity in the 1980s thanks to the advent of magnetic resonance imaging (MRI).
Eventually we invented “functional MRI”, which allows us to link brain activity with certain functions or behaviours in real time by measuring the brain’s use of oxygenated blood during a task.
We can also measure electrical activity using EEG (electroencephalography). This can accurately measure the timing of brain waves as they occur, but isn’t very accurate at identifying which specific areas of the brain they occur in.
Alternatively, we can measure the brain’s response to magnetic stimulation. This is very accurate in terms of area and timing, but only as long as it’s close to the surface.
What are brain states?
All of our simple and complex behaviours, as well as our cognition (thoughts) have a foundation in brain activity, or “neural activity”. Neurons – the brain’s nerve cells – communicate by a sequence of electrical impulses and chemical signals called “neurotransmitters”.
Neurons are very greedy for fuel from the blood and require a lot of support from companion cells. Hence, a lot of measurement of the site, amount and timing of brain activity is done via measuring electrical activity, neurotransmitter levels or blood flow.
We can consider this activity at three levels. The first is a single-cell level, wherein individual neurons communicate. But measurement at this level is difficult (laboratory-based) and provides a limited picture.
As such, we rely more on measurements done on a network level, where a series of neurons or networks are activated. Or, we measure whole-of-brain activity patterns which can incorporate one or more so-called “brain states”.
According to a recent definition, brain states are “recurring activity patterns distributed across the brain that emerge from physiological or cognitive processes”. These states are functionally relevant, which means they are related to behaviour.
Brain states involve the synchronisation of different brain regions, something that’s been most readily observed in animal models, usually rodents. Only now are we starting to see some evidence in human studies.
Various kinds of states
The most commonly-studied brain states in both rodents and humans are states of “arousal” and “resting”. You can picture these as various levels of alertness.
Studies show environmental factors and activity influence our brain states. Activities or environments with high cognitive demands drive “attentional” brain states (so-called task-induced brain states) with increased connectivity. Examples of task-induced brain states include complex behaviours such as reward anticipation, mood, hunger and so on.
In contrast, a brain state such as “mind-wandering” seems to be divorced from one’s environment and tasks. Dropping into daydreaming is, by definition, without connection to the real world.
We can’t currently disentangle multiple “states” that exist in the brain at any given time and place. As mentioned earlier, this is because of the trade-offs that come with recording spatial (brain region) versus temporal (timing) brain activity.
Brain states vs brain waves
Brain state work can be couched in terms such as alpha, delta and so forth. However, this is actually referring to brain waves which specifically come from measuring brain activity using EEG.
EEG picks up on changing electrical activity in the brain, which can be sorted into different frequencies (based on wavelength). Classically, these frequencies have had specific associations:
- gamma is linked with states or tasks that require more focused concentration
- beta is linked with higher anxiety and more active states, with attention often directed externally
- alpha is linked with being very relaxed, and passive attention (such as listening quietly but not engaging)
- theta is linked with deep relaxation and inward focus
- and delta is linked with deep sleep.
Brain wave patterns are used a lot to monitor sleep stages. When we fall asleep we go from drowsy, light attention that’s easily roused (alpha), to being relaxed and no longer alert (theta), to being deeply asleep (delta).
Can we control our brain states?
The question on many people’s minds is: can we judiciously and intentionally influence our brain states?
For now, it’s likely too simplistic to suggest we can do this, as the actual mechanisms that influence brain states remain hard to detangle. Nonetheless, researchers are investigating everything from the use of drugs, to environmental cues, to practising mindfulness, meditation and sensory manipulation.
Controversially, brain wave patterns are used in something called “neurofeedback” therapy. In these treatments, people are given feedback (such as visual or auditory) based on their brain wave activity and are then tasked with trying to maintain or change it. To stay in a required state they may be encouraged to control their thoughts, relax, or breathe in certain ways.
The applications of this work are predominantly around mental health, including for individuals who have experienced trauma, or who have difficulty self-regulating – which may manifest as poor attention or emotional turbulence.
However, although these techniques have intuitive appeal, they don’t account for the issue of multiple brain states being present at any given time. Overall, clinical studies have been largely inconclusive, and proponents of neurofeedback therapy remain frustrated by a lack of orthodox support.
Other forms of neurofeedback are delivered by MRI-generated data. Participants engaging in mental tasks are given signals based on their neural activity, which they use to try and “up-regulate” (activate) regions of the brain involved in positive emotions. This could, for instance, be useful for helping people with depression.
Another potential method claimed to purportedly change brain states involves different sensory inputs. Binaural beats are perhaps the most popular example, wherein two different wavelengths of sound are played in each ear. But the evidence for such techniques is similarly mixed.
Treatments such as neurofeedback therapy are often very costly, and their success likely relies as much on the therapeutic relationship than the actual therapy.
On the bright side, there’s no evidence these treatment do any harm – other than potentially delaying treatments which have been proven to be beneficial.
Susan Hillier, Professor: Neuroscience and Rehabilitation, University of South Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Does Ginseng Increase Testosterone Levels?
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❓ Q&A With 10almonds Subscribers!
Q: You talked about spearmint as reducing testosterone levels, what about ginseng for increasing them?
A: Hormones are complicated and often it’s not a simple matter of higher or lower levels! It can also be a matter of…
- how your body converts one thing into another
- how your body responds (or not) to something according to how the relevant hormone’s receptors are doing
- …and whether there’s anything else blocking those receptors.
All this to say: spearmint categorically is an anti-androgen, but the mechanism of action remains uncertain.
Panax ginseng, meanwhile, is one of the most well-established mysteries in herbal medicine.
Paradoxically, it seems to improve both male and female hormonal regulation, despite being more commonly associated with the former.
- It doesn’t necessarily increase or decrease testosterone or estrogen levels (but it can, even if indirectly)
- It does improve sexual function
- …and alleviates symptoms associated with conditions as varied as:
- Late-onset hypogonadism (common for men during the andropause)
- Benign prostate hyperplasia (again common for men during the andropause)
- …and also counteracts unwanted side-effects of finasteride. Finasteride is often taken by men as a hair loss remedy or, less often but critically, in the case of an enlarged prostate.
But it also…
- Alleviates symptoms of PCOS (polycystic ovary syndrome, which effects around 20% of women)
- May even be an effective treatment for PCOS (rat model only so far)
- It also may improve female reproductive fertility more generally (the studies are down to fruit flies now though)
Bottom line: Panax ginseng is popularly taken to improve natural hormone function, a task at which it appears to excel.
Scientists are still working out exactly how it does the many things it appears to do.
Progress has been made, and it clearly is science rather than witchcraft, but there are still far more unanswered questions than resolved ones!
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Ear Today, Gone Tomorrow
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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
❝Have just had microsuction to remove wax from my ears. A not unpleasant experience but would appreciate your guidance on how best to discourage the buildup of wax in the first place.❞
Well, certainly do not prod or poke it, and that includes with cotton buds (Q-Tips, for the Americans amongst us). That pushes more down than that it extracts, and creates a denser base of wax.
There is no evidence that ear candles help, and they can cause harm.
Further reading: Experts update best practices for diagnosis and treatment of earwax (cerumen impaction)
Ear drops can help, and if you want a home-remedy edition, olive oil or almond oil can be used; these oils dissolve the wax quite quickly (in fancier words: they are cerumenolytic agents); washing with water (e.g. in the shower or bath) is then all that’s needed. However, to avoid infection, ensure you are using a high-purity oil, and get one to use just for that; don’t just grab a bottle from the kitchen.
For your convenience, here is an example of medical grade almond oil (with dropper!) on Amazon
❝Every article had relevance to me. I ❤️ whole fruit, it’s my go to treat. I use ice packs to ease my arthritic knee pain, works well. I’ve read and loved Dr Gawande’s books. Great handful of almonds today❞
While this wasn’t a question, and we don’t usually publish feedback here, I (your writer here, hi) misread that as “ice picks” in the first instance, an implement we’ve probably all wanted to use to relieve pain at some point, but certainly not recommendable! Anyway, the momentary confusion made me smile, so I thought I’d share the silly thought. Smiling is infectious, and all that… And it’s certainly good for the health!
More seriously, glad you enjoyed!
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Do You Know These 10 Common Ovarian Cancer Symptoms?
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It’s better to know in advance:
Things you may need to know
The symptoms listed in the video are:
- Abdominal bloating: persistent bloating due to fluid buildup, often mistaken for overeating or weight gain.
- Pelvic or abdominal pain: continuous pain in the lower abdomen or pelvis, unrelated to menstruation.
- Difficulty eating or feeling full quickly: loss of appetite or feeling full after eating only a small amount.
- Urgent or frequent urination: increased need to urinate due to tumor pressure on the bladder.
- Unexplained weight loss: sudden weight loss without changes in diet or exercise (this goes for cancer in general, of course).
- Fatigue: extreme tiredness that doesn’t improve with rest, possibly linked to anemia.
- Back pain: persistent lower back pain due to tumor pressure or fluid buildup.
- Changes in bowel habits: unexplained constipation, diarrhea, or a feeling of incomplete bowel movements.
- Menstrual changes: irregular, heavier, lighter, or missed periods in premenopausal women.
- Pain during intercourse: discomfort or deep pelvic pain during or after vaginal sex—often overlooked!
Of course, some of those things can be caused by many things, but it’s worth getting it checked out, especially if you have a cluster of them together. Even if it’s not ovarian cancer (and hopefully it won’t be), having multiple things from this list certainly means that “something wrong is not right” in any case.
For those who remember better from videos than what you read, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Take care
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How To Really Look After Your Joints
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The Other Ways To Look After Your Joints
When it comes to joint health, most people have two quick go-to items:
- Stretching
- Supplements like omega-3 and glucosamine sulfate
Stretching, and specifically, mobility exercises, are important! We’ll have to do a main feature on these sometime soon. But for today, we’ll just say: yes, gentle daily stretches go a long way, as does just generally moving more.
And, those supplements are not without their merits. For example:
- Effect of omega-3 on painful symptoms of patients with osteoarthritis of the synovial joints: systematic review and meta-analysis
- Glucosamine sulfate in the treatment of knee osteoarthritis symptoms: a randomized, double-blind, placebo-controlled study using acetaminophen as a side comparator
Of those, glucosamine sulfate may have an extra benefit in now just alleviating the symptoms, but also slowing the progression of degenerative joint conditions (like arthritis of various kinds). This is something it shares with chondroitin sulfate:
Effect of glucosamine or chondroitin sulfate on the osteoarthritis progression: a meta-analysis
An unlikely extra use for the humble cucumber…
As it turns out, cucumber extract beats glucosamine and chondroitin by 200%, at 1/135th of the dose.
You read that right, and it’s not a typo. See for yourself:
Reduce inflammation, have happier joints
Joint pain and joint degeneration in general is certainly not just about inflammation; there is physical wear-and-tear too. But combatting inflammation is important, and turmeric, which we’ve done a main feature on before, is a potent helper in this regard:
See also: Keep Inflammation At Bay
(a whole list of tips for, well, keeping inflammation at bay)
About that wear-and-tear…
Your bones and joints are made of stuff, and that stuff needs to be replaced. As we get older, the body typically gets worse at replacing it in a timely and efficient fashion. We can help it do its job, by giving it more of the stuff it needs.
And what stuff is that?
Well, minerals like calcium and phosphorus are important, but a lot is also protein! Specifically, collagen. We did a main feature on this before, which is good, as it’d take us a lot of space to cover all the benefits here:
We Are Such Stuff As Fish Are Made Of
Short version? People take collagen for their skin, but really, its biggest benefit is for our bones and joints!
Wrap up warmly and… No wait, skip that.
If you have arthritis, you may indeed “feel it in your bones” when the weather changes. But the remedy for that is not to try to fight it, but rather, to strengthen your body’s ability to respond to it.
The answer? Cryotherapy, with ice baths ranking top:
- Effects of an Exercise Program and Cold-Water Immersion Recovery in Patients with Rheumatoid Arthritis (RA): Feasibility Study
- Effectiveness of home-based conventional exercise and cryotherapy on daily living activities in patients with knee osteoarthritis: A randomized controlled clinical trial
- Local Cryotherapy, Comparison of Cold Air and Ice Massage on Pain and Handgrip Strength in Patients with Rheumatoid Arthritis
Note that this can be just localized, so for example if the problem joints are your wrists, a washing-up bowl with water and ice will do just nicely.
Note also that, per that last study, a single session will only alleviate the pain, not the disease itself. For that (per the other studies) more sessions are required.
We did a main feature about cryotherapy a while back, and it explains how and why it works:
A Cold Shower A Day Keeps The Doctor Away?
Take care!
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I can’t afford olive oil. What else can I use?
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If you buy your olive oil in bulk, you’ve likely been in for a shock in recent weeks. Major supermarkets have been selling olive oil for up to A$65 for a four-litre tin, and up to $26 for a 750 millilitre bottle.
We’ve been hearing about the health benefits of olive oil for years. And many of us are adding it to salads, or baking and frying with it.
But during a cost-of-living crisis, these high prices can put olive oil out of reach.
Let’s take a look at why olive oil is in demand, why it’s so expensive right now, and what to do until prices come down.
Joyisjoyful/Shutterstock Remind me, why is olive oil so good for you?
Including olive oil in your diet can reduce your risk of developing type 2 diabetes and improve heart health through more favourable blood pressure, inflammation and cholesterol levels.
This is largely because olive oil is high in monounsaturated fatty acids and polyphenols (antioxidants).
Some researchers have suggested you can get these benefits from consuming up to 20 grams a day. That’s equivalent to about five teaspoons of olive oil.
Why is olive oil so expensive right now?
A European heatwave and drought have limited Spanish and Italian producers’ ability to supply olive oil to international markets, including Australia.
This has been coupled with an unusually cold and short growing season for Australian olive oil suppliers.
The lower-than-usual production and supply of olive oil, together with heightened demand from shoppers, means prices have gone up.
We’ve seen unfavourable growing conditions in Europe and Australia. KaMay/Shutterstock How can I make my olive oil go further?
Many households buy olive oil in large quantities because it is cheaper per litre. So, if you have some still in stock, you can make it go further by:
- storing it correctly – make sure the lid is on tightly and it’s kept in a cool, dark place, such as a pantry or cabinet. If stored this way, olive oil can typically last 12–18 months
- using a spray – sprays distribute oil more evenly than pourers, using less olive oil overall. You could buy a spray bottle to fill from a large tin, as needed
- straining or freezing it – if you have leftover olive oil after frying, strain it and reuse it for other fried dishes. You could also freeze this used oil in an airtight container, then thaw and fry with it later, without affecting the oil’s taste and other characteristics. But for dressings, only use fresh oil.
I’ve run out of olive oil. What else can I use?
Here are some healthy and cheaper alternatives to olive oil:
- canola oil is a good alternative for frying. It’s relatively low in saturated fat so is generally considered healthy. Like olive oil, it is high in healthy monounsaturated fats. Cost? Up to $6 for a 750mL bottle (home brand is about half the price)
- sunflower oil is a great alternative to use on salads or for frying. It has a mild flavour that does not overwhelm other ingredients. Some studies suggest using sunflower oil may help reduce your risk of heart disease by lowering LDL (bad) cholesterol and raising HDL (good) cholesterol. Cost? Up to $6.50 for a 750mL bottle (again, home brand is about half the price)
- sesame oil has a nutty flavour. It’s good for Asian dressings, and frying. Light sesame oil is typically used as a neutral cooking oil, while the toasted type is used to flavour sauces. Sesame oil is high in antioxidants and has some anti-inflammatory properties. Sesame oil is generally sold in smaller bottles than canola or sunflower oil. Cost? Up to $5 for a 150mL bottle.
There are plenty of alternative oils you can use in salads or for frying. narai chal/Shutterstock How can I use less oil, generally?
Using less oil in your cooking could keep your meals healthy. Here are some alternatives and cooking techniques:
- use alternatives for baking – unless you are making an olive oil cake, if your recipe calls for a large quantity of oil, try using an alternative such as apple sauce, Greek yoghurt or mashed banana
- use non-stick cookware – using high-quality, non-stick pots and pans reduces the need for oil when cooking, or means you don’t need oil at all
- steam instead – steam vegetables, fish and poultry to retain nutrients and moisture without adding oil
- bake or roast – potatoes, vegetables or chicken can be baked or roasted rather than fried. You can still achieve crispy textures without needing excessive oil
- grill – the natural fats in meat and vegetables can help keep ingredients moist, without using oil
- use stock – instead of sautéing vegetables in oil, try using vegetable broth or stock to add flavour
- try vinegar or citrus – use vinegar or citrus juice (such as lemon or lime) to add flavour to salads, marinades and sauces without relying on oil
- use natural moisture – use the natural moisture in ingredients such as tomatoes, onions and mushrooms to cook dishes without adding extra oil. They release moisture as they cook, helping to prevent sticking.
Lauren Ball, Professor of Community Health and Wellbeing, The University of Queensland and Emily Burch, Accredited Practising Dietitian and Lecturer, Southern Cross University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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