Five Flavors & Five Benefits
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Five Flavors Of Good Health
Schisandra chinensis, henceforth Schisandra, is also called the “five flavor fruit”, for covering the culinary bases of sweet, salt, bitter, sour, and pungent.
It can be eaten as a fruit (small red berries), juiced from the fruit, or otherwise extracted into supplements (dried powder of the fruit being a common one).
It has long enjoyed usage in various traditional medicines, especially in China and Siberia.
So, what are its health claims, and how does the science stack up?
Menopause
Most of the studies are mouse studies, and we prefer studies on humans, so here’s a small (n=36) randomized clinical trial that concluded…
❝Schisandra chinensis can be a safe and effective complementary medicine for menopausal symptoms, especially for hot flushes, sweating, and heart palpitations❞
~ Dr. Joon Young Park & Dr. Kye Hyun Kim
Read more: A randomized, double-blind, placebo-controlled trial of Schisandra chinensis for menopausal symptoms
Antioxidant (and perhaps more)
Like many berries, it’s a good source of lignans offering antioxidant effects:
Antioxidant Effects of Schisandra chinensis Fruits and Their Active Constituents
Lignans usually have anticancer effects too (which is reasonably, given what is antioxidant is usually anticancer and anti-inflammatory as well, by the same mechanism) but those have not yet been studied in schisandra specifically.
Antihepatotoxicity
In other words, it’s good for your liver. At least, so animal studies tell us, because human studies haven’t been done yet for this one. The effect is largely due to its antioxidant properties, but it seems especially effective for the liver—which is not surprising, giving the liver’s regeneration mechanism.
Anyway, here’s a fascinating study that didn’t even need to use the fruit itself, just the pollen from the plant, it was that potent:
Athletics enhancer
While it’s not yet filling the shelves of sports nutrition stores, we found a small (n=45) study with healthy post-menopausal women who took either 1g of schisandra (experimental group) or 1g of starch (placebo group), measured quadriceps muscle strength and resting lactate levels over the course of a 12 week intervention period, and found:
❝Supplementation of Schisandra chinensis extract can help to improve quadriceps muscle strength as well as decrease lactate level at rest in adult women ❞
Anti-Alzheimers & Anti-Parkinsons
The studies for this are all in vitro, but that’s because it’s hard to find volunteers willing to have their brains sliced and looked at under a microscope while they’re still alive.
Nevertheless, the results are compelling, and it seems uncontroversial to say that schisandra, or specifically Schisandrin B, a compound it contains, has not only anti-inflammatory properties, but also neuroprotective properties, and specifically blocks the formation of excess amyloid-β peptides in the brain (which are critical for the formation of amyloid plaque, as found in the brains of Alzheimer’s patients):
Is it safe?
For most people, yes! Some caveats:
- As it can stimulate the uterus, it’s not recommended if you’re pregant.
- Taking more than the recommended amount can worsen symptoms of heartburn, GERD, ulcers, or other illnesses like that.
And as ever, do speak with our own doctor/pharmacist if unsure, as your circumstances may vary and we cannot cover all possibilities here.
Where can I get some?
We don’t sell it, but here for your convenience is an example product on Amazon
Enjoy!
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Walnuts vs Cashews – Which is Healthier?
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Our Verdict
When comparing walnuts to cashews, we picked the walnuts.
Why?
It was close! In terms of macros, walnuts have about 2x the fiber, while cashews have slightly more protein. In the specific category of fats, walnuts have more fat. Looking further into it: walnuts’ fats are mostly polyunsaturated, while cashews’ fats are mostly monounsaturated, both of which are considered healthy.
Notwithstanding being both high in calories, neither nut is associated with weight gain—largely because of their low glycemic indices (of which, walnuts enjoy the slightly lower GI, but both are low-GI foods)
When it comes to vitamins, walnuts have more of vitamins A, B2, B3 B6, B9, and C, while cashews have more of vitamins B1, B5, E, and K. Because of the variation in their respective margins of difference, this is at best a moderate victory for walnuts, though.
In the category of minerals, cashews get their day, as walnuts have more calcium and manganese, while cashews have more copper, iron, magnesium, phosphorus, potassium, selenium, and zinc.
In short: unless you’re allergic, we recommend enjoying both of these nuts (and others) for a full range of benefits. However, if you’re going to pick one, walnuts win the day.
Want to learn more?
You might like to read:
Why You Should Diversify Your Nuts
Take care!
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The Lies That Depression Tells Us
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In this short (6:42) video, psychiatrist Dr. Tracey Marks talks about 8 commonly-believed lies that depression often tells us. They are:
- “I don’t measure up”
- “No one cares about me”
- “I’m better off alone”
- “No one understands”
- “It’s all my fault”
- “I have no reason to be depressed”
- “Nothing matters”
- “I’ll never get better”
Some of these can be reinforced by people around us; it’s easy to believe that “no one understands” if for example the few people we interact with the most don’t understand, or that “I have no reason to be depressed” if people try to cheer you up by pointing out your many good fortunes.
The reality, of course, is that depression is a large, complex, and many-headed beast, with firm roots in neurobiology.
There are things we can do that may ameliorate it… But they also may not, and sometimes life is just going to suck for a while. That doesn’t mean we should give up (that, too, is depression lying to us, per “I’ll never get better”), but it does mean that we should not be so hard on ourselves for not having “walked it off” the way one might “just walk off” a broken leg.
Oh, you can’t “just walk off” a broken leg? Well then, perhaps it’s not surprising if we don’t “just think off” a broken brain, either. The brain can rebuild itself, but that’s a slow process, so buckle in:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to know more?
You might like these previous articles of ours about depression (managing it, and overcoming it):
- The Mental Health First-Aid That You’ll Hopefully Never Need
- Behavioral Activation Against Depression & Anxiety
- The Easiest Way To Take Up Journaling
- Antidepressants: Personalization Is Key!
Take care!
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Biohack Your Brain – by Dr. Kristen Willeumier
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The title of this book is a little misleading, as it’s not really about biohacking; it’s more like a care and maintenance manual for the brain.
This distinction is relevant, because to hack a thing is to use it in a way it’s not supposed to be used, and/or get it to do something it’s not supposed to do.
Intead, what neurobiologist Dr. Kristen Willeumier offers us is much more important: how to keep our brain in good condition.
She takes us through the various things that our brain needs, and what will happen if it doesn’t get them. Some are dietary, some are behavioral, some are even cognitive.
A strength of this book is not just explaining what things are good for the brain, but also: why. Understanding the “why” can be the motivational factor that makes a difference between us doing the thing or not!
For example, if we know that exercise is good for the brain, we think “sounds reasonable” and carry on with what we were doing. If, however, we also understand how increased bloodflow helps with the timely removal of beta-amyloids that are associated with Alzheimer’s, we’re more likely to make time for getting that movement going.
Bottom line: there are key things we can do to keep our brain healthy, and you probably wouldn’t want to miss any. This book is a great care manual for such!
Click here to check out Biohack Your Brain and keep your brain young and fit!
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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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Age & Aging: What Can (And Can’t) We Do About It?
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How old do you want to be?
We asked you how old you are, and got an interesting spread of answers. This wasn’t too surprising; of course we have a general idea of who our readership is and we write accordingly.
What’s interesting is the gap for “40s”.
And, this wasn’t the case of a broken poll button, it’s something that crops up a lot in health-related sociological research. People who are most interested in taking extra care of their body are often:
- Younger people full of optimism about maintaining this perfectly healthy body forever
- Older people realizing “if I don’t want to suffer avoidable parts of age-related decline, now is the time to address these things”
In between, we often have a gap whereby people no longer have the optimism of youth, but do not yet feel the pressure of older age.
Which is not to say there aren’t 40-somethings who do care! Indeed, we know for a fact we have some subscribers in their 40s (and some in their 90s, too), just, they evidently didn’t vote in this poll.
Anyway, let’s bust some myths…
Aging is inevitable: True or False?
False, probably. That seems like a bold (and fortune-telling) claim, so let’s flip it to deconstruct it more logically:
Aging is, and always will be, unstoppable: True or False?
That has to be “False, probably”. To say “true” now sounds like an even bolder claim. Just like “the moon will always be out of reach”.
- When CPR was first developed, first-aiders were arrested for “interfering with a corpse”.
- Many diseases used to be death sentences that are now “take one of these in the morning”
- If you think this is an appeal to distant history, HIV+ status was a death sentence in the 90s. Now it’s “take one of these in the morning”.
But, this is an appeal to the past, and that’s not always a guarantee of the future. Where does the science stand currently? How is the research and development doing on slowing, halting, reversing aging?
We can slow aging: True or False?
True! There’s a difference between chronological age (i.e., how much time has passed while we’ve been alive) and biological age (i.e., what our diverse markers of aging look like).
Biological age often gets talked about as a simplified number, but it’s more complex than that, as we can age in different ways at different rates, for example:
- Visual markers of aging (e.g. wrinkles, graying hair)
- Performative markers of aging (e.g. mobility tests)
- Internal functional markers of aging (e.g. tests for cognitive decline, eyesight, hearing, etc)
- Cellular markers or aging (e.g. telomere length)
- …and more, but we only have so much room here
There are things we can do to slow most of those, including:
- Good nutrition (e.g. collagen and lutein, to keep specific parts of the body functioning “like those of a younger person” ranging from the joints to the eyes and brain)
- Anti-oxidant activity (e.g. eating anti-oxidant foods, supplementing with anti-oxidants or other things that mitigate oxidative stress, and avoiding foods that hasten oxidative stress which causes many kinds of aging)
- Getting good sleep (not to be underestimated for its restorative importance)
- Taking care of our cognitive health
- Taking care of our mental health (especially: reducing stress)
- Taking care of our mobility (prevention is better than cure!)
In the case of cognitive decline particularly, check out our previous article:
How To Reduce Your Alzheimer’s Risk
It’s too early to worry about… / It’s too late to do anything about… True or False?
False and False!
Many things that affect our health later in life are based on early-life choices and events. So it’s important for young people to take advantage of that. The earlier one adopts a healthy lifestyle, the better, because, and hold onto your hats for the shocker here: aging is cumulative.
However, that doesn’t mean that taking up healthy practices (or dropping unhealthy ones) is pointless later in life, even in one’s 70s and beyond!
Read about this and more from the National Institute of Aging:
What Do We Know About Healthy Aging?
We can halt aging: True or False?
False, for now at least. Our bodies are not statues; they are living organisms, constantly rebuilding themselves, constantly changing, every second of every day, for better or for worse. Every healthy or unhealthy choice you make, every beneficial or adverse experience you encounter, affects your body on a cellular level.
Your body never, ever, stops changing for as long as you live.
But…
We can reverse aging: True or False?
True! Contingently and with limitations, for now at least.
Remember what we said about your body constantly rebuilding itself? That goes for making itself better as well as making itself worse.
- If yesterday you couldn’t touch your toes and today you can, congratulations, you just got younger by a biological marker of aging.
- If you stopped drinking/smoking/eating a certain way last year, and this year your skin has fewer wrinkles, congratulations, you got younger by a biological marker of aging.
- If you’ve been exercising and now your heart rate variability and VO2 max are better than last month, congratulations, you got younger by a biological marker aging.
- If you took supplements that reduce and/or mitigate oxidative stress (e.g. resveratrol, CoQ10, l-theanine, etc), and you took up intermittent fasting, and now your telomeres are longer than they were six months ago, congratulations, you got younger by a biological marker of aging.
But those aren’t really being younger, we’ll still die when our time is up: True or False?
False and True, respectively.
Those kinds of things are really being younger, biologically. What else do you think being biologically younger is?
We may indeed die when our time is up, but (unless we suffer fatal accident or incident first) “when our time is up” is something that is decided mostly by the above factors.
Genetics—the closest thing we have to biological “fate”—accounts for only about 25% of our longevity-related health*.
Genes predispose, but they don’t predetermine.
*Read more: Human longevity: Genetics or Lifestyle? It takes two to tango
(from the Journal of Immunity and Ageing)
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Can you get sunburnt or UV skin damage through car or home windows?
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When you’re in a car, train or bus, do you choose a seat to avoid being in the sun or do you like the sunny side?
You can definitely feel the sun’s heat through a window. But can you get sunburn or skin damage when in your car or inside with the windows closed?
Let’s look at how much UV (ultraviolet) radiation passes through different types of glass, how tinting can help block UV, and whether we need sunscreen when driving or indoors.
Zac Harris/Unsplash What’s the difference between UVA and UVB?
Of the total UV radiation that reaches Earth, about 95% is UVA and 5% is UVB.
UVB only reaches the upper layers of our skin but is the major cause of sunburn, cataracts and skin cancer.
UVA penetrates deeper into our skin and causes cell damage that leads to skin cancer.
UVA penetrates deeper than UVB. Shutterstock/solar22 Glass blocks UVA and UVB radiation differently
All glass used in house, office and car windows completely blocks UVB from passing through.
But only laminated glass can completely block UVA. UVA can pass through other glass used in car, house and office windows and cause skin damage, increasing the risk of cancer.
Car windscreens block UVA, but the side and rear windows don’t
A car’s front windscreen lets in lots of sunshine and light. Luckily it blocks 98% of UVA radiation because it is made of two layers of laminated glass.
But the side and rear car windows are made of tempered glass, which doesn’t completely block UVA. A study of 29 cars found a range from 4% to almost 56% of UVA passed through the side and rear windows.
The UVA protection was not related to the car’s age or cost, but to the type of glass, its colour and whether it has been tinted or coated in a protective film. Grey or bronze coloured glass, and window tinting, all increase UVA protection. Window tinting blocks around 95% of UVA radiation.
In a separate study from Saudi Arabia, researchers fitted drivers with a wearable radiation monitor. They found drivers were exposed to UV index ratings up to 3.5. (In Australia, sun protection is generally recommended when the UV index is 3 or above – at this level it takes pale skin about 20 minutes to burn.)
So if you have your windows tinted, you should not have to wear sunscreen in the car. But without tinted windows, you can accumulate skin damage.
UV exposure while driving increases skin cancer risk
Many people spend a lot of time in the car – for work, commuting, holiday travel and general transport. Repeated UVA radiation exposure through car side windows might go unnoticed, but it can affect our skin.
Indeed, skin cancer is more common on the driver’s side of the body. A study in the United States (where drivers sit on the left side) found more skin cancers on the left than the right side for the face, scalp, arm and leg, including 20 times more for the arm.
Another US study found this effect was higher in men. For melanoma in situ, an early form of melanoma, 74% of these cancers were on the on the left versus 26% on the right.
Earlier Australian studies reported more skin damage and more skin cancer on the right side.
Cataracts and other eye damage are also more common on the driver’s side of the body.
What about UV exposure through home or office windows?
We see UV damage from sunlight through our home windows in faded materials, furniture or plastics.
Most glass used in residential windows lets a lot of UVA pass through, between 45 and 75%.
Residential windows can let varied amounts of UVA through. Sherman Trotz/Pexels Single-pane glass lets through the most UVA, while thicker, tinted or coated glass blocks more UVA.
The best options are laminated glass, or double-glazed, tinted windows that allow less than 1% of UVA through.
Skylights are made from laminated glass, which completely stops UVA from passing through.
Most office and commercial window glass has better UVA protection than residential windows, allowing less than 25% of UVA transmission. These windows are usually double-glazed and tinted, with reflective properties or UV-absorbent chemicals.
Some smart windows that reduce heat using chemical treatments to darken the glass can also block UVA.
So when should you wear sunscreen and sunglasses?
The biggest risk with skin damage while driving is having the windows down or your arm out the window in direct sun. Even untinted windows will reduce UVA exposure to some extent, so it’s better to have the car window up.
For home windows, window films or tint can increase UVA protection of single pane glass. UVA blocking by glass is similar to protection by sunscreen.
When you need to use sunscreen depends on your skin type, latitude and time of the year. In a car without tinted windows, you could burn after one hour in the middle of the day in summer, and two hours in the middle of a winter’s day.
But in the middle of the day next to a home window that allows more UVA to pass through, it could take only 30 minutes to burn in summer and one hour in winter.
When the UV index is above three, it is recommended you wear protective sunglasses while driving or next to a sunny window to avoid eye damage.
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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