Fatty Acids For The Eyes & Brain: The Good And The Bad
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Good For The Eyes; Good For The Brain
We’ve written before about omega-3 fatty acids, covering the basics and some lesser-known things:
What Omega-3 Fatty Acids Really Do For Us
…and while we discussed its well-established benefits against cognitive decline (which is to be expected, because omega-3 is good against inflammation, and a large part of age-related neurodegeneration is heavily related to neuroinflammation), there’s a part of the brain we didn’t talk about in that article: the eyes.
We did, however, talk in another article about supplements that benefit the eyes and [the rest of the] brain, and the important links between the two, to the point that an examination of the levels of lutein in the retina can inform clinicians about the levels of lutein in the brain as a whole, and strongly predict Alzheimer’s disease (because Alzheimer’s patients have significantly less lutein), here:
Now, let’s tie these two ideas together
In a recent (June 2024) meta-analysis of high-quality observational studies from the US and around the world, involving nearly a quarter of a million people over 40 (n=241,151), researchers found that a higher intake of omega-3 is significantly linked to a lower risk of macular degeneration.
To put it in numbers, the highest intake of omega-3s was associated with an 18% reduced risk of early stage macular degeneration.
They also looked at a breakdown of what kinds of omega-3, and found that taking a blend DHA and EPA worked best of all, although of people who only took one kind, DHA was the best “single type” option.
You can read the paper in full, here:
Association between fatty acid intake and age-related macular degeneration: a meta-analysis
A word about trans-fatty acids (TFAs)
It was another feature of the same study that, while looking at fatty acids in general, they also found that higher consumption of trans-fatty acids was associated with a higher risk of advanced age-related macular degeneration.
Specifically, the highest intake of TFAs was associated with a more than 2x increased risk.
There are two main dietary sources of trans-fatty acids:
- Processed foods that were made with TFAs; these have now been banned in a lot of places, but only quite recently, and the ban is on the processing, not the sale, so if you buy processed foods that contain ingredients that were processed before 2021 (not uncommon, given the long life of many processed foods), the chances of them having TFAs is higher.
- Most animal products. Most notably from mammals and their milk, so beef, pork, lamb, milk, cheese, and yes even yogurt. Poultry and fish technically do also contain TFAs in most cases, but the levels are much lower.
Back to the omega-3 fatty acids…
If you’re wondering where to get good quality omega-3, well, we listed some of the best dietary sources in our main omega-3 article (linked at the top of today’s).
However, if you want to supplement, here’s an example product on Amazon that’s high in DHA and EPA, following the science of what we shared today 😎
Take care!
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Chia Seeds vs Flax Seeds – Which is Healthier?
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Our Verdict
When comparing chia to flax, we picked the chia.
Why?
Both are great! And it’s certainly close. Both are good sources of protein, fiber, and healthy fats.
Flax seeds contain a little more fat (but it is healthy fat), while chia seeds contain a little more fiber.
They’re both good sources of vitamins and minerals, but chia seeds contain more. In particular, chia seeds have about twice as much calcium and selenium, and notably more iron and phosphorous—though flax seeds do have more potassium.
Of course the perfect solution is to enjoy both, but since for the purpose of this exercise we have to pick one, we’d say chia comes out on top—even if flax is not far behind.
Enjoy!
Learn more
For more on these, check out:
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Eye Exercises That Measurably Improve Your Vision
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Our eyesight, like most of the rest of our body’s functions, will decline if not adequately maintained. Modern lifestyles see most of us indoors for most of the day (which means a reduced maximum focal length) and often looking at screens (even further reduced focal length), which means that part of our eyes responsible for focus will tend to atrophy and wither. And if we want to see something better, we adjust the settings instead of adjusting our eyes. However, it is perfectly possible to recover our clear youthful vision:
See the results for yourself (and see them clearly!)
The exercises that gave him the results he showed between the two tests, are:
- Blink for 30 seconds
- Focus on something in front and (keeping your focus on that stationary point) move your head left & right, upwards & downwards, and diagonally
- Take a break and blink for 30 seconds
- Keep your head still while you move your eyes left & right, upwards & downwards, and diagonally
- Focus on something in front while you move move your head left & right, upwards & downwards, and diagonally
This should temporarily improve your vision immediately, because of what has been going on in the capillaries in and around your eyes, but sustained results require sustained (i.e. daily) practice. This is because the vasculature is only part of the mechanism; it’s also a matter of improving the muscles responsible for focusing the eyes—and like any muscles, it’s not a case of “do it once and enjoy the results forever”. So, even just 2–3 minutes each day is recommended.
For more on all of this plus a visual demonstration, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Are Your Glasses Making Your Eyesight Worse?
or, if you are very serious about having excellent vision for life:
Vision for Life, Revised Edition – by Dr. Meir Schneider ← this one’s a book, and a very good one at that
Take care!
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Luxurious Longevity Risotto
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Pearl barley is not only tasty and fiber-rich, but also, it contains propionic acid, which lowers cholesterol. The fiber content also lowers cholesterol too, of course, by the usual mechanism. The dish’s health benefits don’t end there, though; check out the science section at the end of the recipe!
You will need
- 2 cups pearl barley
- 3 cups sliced chestnut mushrooms
- 2 onions, finely chopped
- 6 large leaves collard greens, shredded
- ½ bulb garlic, finely chopped
- 8 spring onions, sliced
- 1½ quarts low-sodium vegetable stock
- 2 tbsp nutritional yeast
- 1 tbsp chia seeds
- 1 tbsp black pepper, coarse ground
- 1 tsp MSG or 2 tsp low-sodium salt
- 1 tsp rosemary
- 1 tsp thyme
- Extra virgin olive oil, for cooking
- Optional garnish: fresh basil leaves
Method
(we suggest you read everything at least once before doing anything)
1) Heat a little oil in a large sauté pan; add the onions and garlic and cook for 5 minutes; add the mushrooms and cook for another 5 minutes.
2) Add the pearl barley and a cup of the vegetable stock. Cook, stirring, until the liquid is nearly all absorbed, and add more stock every few minutes, as per any other risotto. You may or may not use all the stock you had ready. Pearl barley takes longer to cook than rice, so be patient—it’ll be worth the wait!
Alternative: an alternative is to use a slow cooker, adding a quart of the stock at once and coming back about 4 hours later—thus, it’ll take a lot longer, but will require minimal/no supervision.
3) When the pearl barley has softened, become pearl-like, and the dish is taking on a creamy texture, stir in the rest of the ingredients. Once the greens have softened, the dish is done, and it’s time to serve. Add the garnish if using one:
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- The Magic Of Mushrooms: “The Longevity Vitamin” (That’s Not A Vitamin)
- The Many Health Benefits Of Garlic
- Chia: The Tiniest Seeds With The Most Value
- Black Pepper’s Impressive Anti-Cancer Arsenal (And More)
- Monosodium Glutamate: Sinless Flavor-Enhancer Or Terrible Health Risk?
Take care!
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Upgrade Your Life – by Pat Divilly
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Pat Divilly takes us through the steps to establish what it is we want out of life, adopt daily habits of success, build our self-esteem and confidence, and pursue what’s actually fulfilling, whatever that is for us as individuals.
The general layout of the book is: first, figuring out where you genuinely want to go (not just where people expect you to want to go!), and then seeing about what things you can change, first small and then larger, to get there.
The scope of the book covers work life and personal life, and treats them both as something where you can optimize how things work for you, and those around you. All in all, unless your life is literally perfect in every way imaginable, there’s probably something in this book that will help you to, indeed, “upgrade your life”. And who wouldn’t want that?
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How (And Why) To Train Your Pre-Frontal Cortex
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Dr. Chapman’s Keys For Mental Focus
This is Dr. Sandra Chapman; she’s a cognitive neuroscientist, on a mission to, in her words, further our understanding of:
- what makes the brain stronger, faster and last longer
- what enhances human cognitive capacity, and
- what enhances the underlying brain systems across the lifespan.
To this end, she’s also the founder and Chief Director of the Center For Brain Health, where she has worked on her mission for the past 25 years (clocking up hundreds of peer-reviewed publications to her name), as well as being a professor of Behavioral and Brain Sciences at UT Dallas.
What does she want us to know?
Get your brain into gear
When it comes to your brainpower, it is “use it or lose it”, but it is also perfectly possible to use it and lose it.
Why?
Very often, what we are using our brains for is high-strain, low-yield stuff, such as multitasking, overthinking, or overthinking while multitasking. And to make it worse, we often do it without sufficient rest.
This is the equivalent of owning a Ferrari but trying to drive it in second and third gear at once by switching between the two as rapidly as possible. And doing that for 18 hours each day.
Suffice it to say, you’ll be going nowhere quickly.
An alternative “use” of brainpower is low-strain, low-yield stuff, such as having to pay close attention to a boring conversation. It’s enough to stop your mind from doing anything else, but not enough to actually stimulate you.
This is the equivalent of owning a Ferrari but keeping it idling. The wear and tear is minimal this time, but you’re not actually going anywhere either.
Better, of course, are the other two quadrants:
- low-strain, high-yield: consistently using our brain in relatively non-taxing ways that encourage its development
- high-strain, high-yield: here the Ferrari metaphor definitely fails, because unlike cars, our bodies (including our brains) are machines that benefit from judicious regular progressive overloading (but just by a bit, and with adequate recovery time between overloads).
See also: 12 Weeks To Measurably Boost Your Brain
How to do the “low-strain, low-yield” part
When it comes to “what’s the most important part of the brain to help in the face of cognitive decline?” the usual answer is either to focus on memory (hippocampi) or language (various parts, but for example Wernicke’s area and Broca’s area), since people most fear losing memory, and language is very important both socially and practically.
Those are indeed critical, and we at 10almonds stand by them, but Dr. Chapman (herself having originally trained as speech and language pathologist!) makes a strong case for adding a third brain part to the list.
Specifically, she advocates for strengthening the pre-frontal cortex, which is responsible for inhibition, task-switching, working memory, and cognitive flexibility. If that seems like a lot, do remember it’s a whole cortex and not one of the assorted important-but-small brain bits we mentioned above.
How? She has developed training programs for this, based on what she calls Strategic Memory Advanced Reasoning Tactics (SMART), to support support attention, planning, judgment and emotional management.
You can read more about those programs here:
Center For Brain Health | Our Programs
Participation in those is mostly not free, however, if you join their…
Center For Brain Health | BrainHealth Project
…then they will periodically invite you to join pilot programs, research programs, and the like, which will either be free or they-pay-you affairs—because this is how science is done, and you can read about yourself (anonymized, of course) later in peer-reviewed papers of the kind we often cite here.
If you’re not interested in any of that though, we will say that according to Dr. Chapman, the keys are:
Inhibition: be conscious of this function of your brain, and develop it. This is the function of your brain that stops you from making mistakes—or put differently: stops you from saying/doing something stupid.
Switching: do this consciously; per “I am now doing this task, now I am switching to this other task”, rather than doing the gear-grinding thing we discussed earlier
Working memory: this is effectively your brain’s RAM. Unlike the RAM of a computer (can be enhanced by adding another chip or replacing with a bigger chip), our brain’s RAM can be increased by frequent use, and especially by judicious use of progressive overloading (with rests between!) which we’ll discuss in the high-strain, high-yield section.
Flexibility: this is about creative problem-solving, openness to new ideas, and curiosity
See also: Curiosity Kills The Neurodegeneration
How to do the “high-strain, high-yield” part
Delighting this chess-playing writer, Dr. Chapman recommends chess. Although, similar games such as go (a Chinese game that looks simpler than chess but actually requires more calculation) work equally well too.
Why?
Games like chess and go cause structural changes that are particularly helpful, in terms of engaging in such foundational tasks as learning, abstract reasoning, problem-solving and self-control:
Chess Practice as a Protective Factor in Dementia
Basically, it checks (so to speak) a lot of boxes, especially for the pre-frontal cortex. Some notes:
- Focusing on the game is required for brain improvement; simply pushing wood casually will not do it. Ideally, calculating several moves ahead will allow for strong working memory use (because to calculate several moves ahead, one will have to hold increasingly many possible positions in the mind while doing so).
- The speed of play must be sufficiently slow as to allow not only for thinking, but also for what in chess is called “blunder-checking”, in other words, having decided on one’s move, pausing to consider whether it is a mistake, and actively trying to find evidence that it is. This is the crucial “inhibition habit”, and when one does it reflexively, one will make fewer mistakes. Tying this to dementia, see for example how one of the common symptoms of dementia is falling for scams that one wouldn’t have previously. How did cognitive decline make someone naïve? It didn’t, per se; it just took away their ability to, having decided what to do, pause to consider whether it was a mistake, and actively trying to find evidence that it is.
- That “conscious switching” that we talked about, rather than multitasking? In chess, there is a difference between strategy and tactics. Don’t worry about what that difference is for now (learn it if you want to take up chess), but know that strong players will only strategize while it is their opponent’s turn, and only calculate (tactics) while it is their own turn. It’s very tempting to flit constantly between one and the other, but chess requires players to have the mental discipline be able to focus on one task or the other and stick with that task until it’s the appointed time to switch.
If you feel like taking up chess, this site (and related app, if you want it) is free (it’s been funded by voluntary donations for a long time now) and good and even comes with free tuition and training tools: LiChess.org
Here’s another site that this writer (hi, it’s me) personally uses—it has great features too, but many are paywalled (I’m mostly there just because I’ve been there nearly since its inception, so I’m baked into the community now): Chess.com
Want to know more?
You might like this book by Dr. Chapman, which we haven’t reviewed yet but it did inform large parts of today’s article:
Make Your Brain Smarter: Increase Your Brain’s Creativity, Energy, and Focus – by Dr. Sandra Chapman
Enjoy!
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Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)
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Why You’re Probably Not Getting Enough Fiber (And How To Fix It)
First things first… How much fiber should we be eating?
- The World Health Organization recommends we each get at least 25g of fiber per day:
- A more recent meta-review of studies, involving thousands of people and decades of time, suggests 25–29g is ideal:
- The British Nutritional Foundation gives 30g as the figure:
- The US National Academy of Sciences’ Institute of Medicine recommends 21g–38g per day, depending on age and sex:
- A large study last year gave 30–40g as the figure:
*This one is also a great read to understand more about the “why” of fiber
Meanwhile, the average American gets 16g of fiber per day.
So, how to get more fiber, without piling on too many carbs?
Foods that contain fiber generally contain carbs (there’s a limit to how much celery most people want to eat), so there are two key ideas here:
- Getting a good carb:fiber ratio
- Making substitutions that boost fiber without overdoing (or in some case, even changing) carbs
Meat → Lentils
Well-seasoned lentils can be used to replaced ground beef or similar. A cup of boiled lentils contains 18g of fiber, so you’re already outdoing the average American’s daily total.
Meat → Beans
Black beans are a top-tier option here (15g per cup, cooked weight), but many kinds of beans are great.
Chicken/Fish → Chickpeas
Yes, chicken/fish is already meat, but we’re making a case for chickpeas here. Cooked and seasoned appropriately, they do the job, and pack in 12g of fiber per cup. Also… Hummus!
Bonus: Hummus, eaten with celery sticks.
White pasta/bread → Wholewheat pasta/bread
This is one where “moderation is key”, but if you’re going to eat pasta/bread, then wholewheat is the way to go. Fiber amounts vary, so read labels, but it will always have far more than white.
Processed salty snacks → Almonds and other nuts
Nuts in general are great, but almonds are top-tier for fiber, amongst other things. A 40g handful of almonds contains about 10g of fiber.
Starchy vegetables → Non-starchy vegetables
Potatoes, parsnips, and their friends have their place. But they cannot compete with broccoli, peas, cabbage, and other non-starchy vegetables for fiber content.
Bonus: if you’re going to have starchy vegetables though, leave the skins on!
Fruit juice → Fruit
Fruit juice has had most, if not all, of its fiber removed. Eat an actual juicy fruit, instead. Apples and bananas are great options; berries such as blackberries and raspberries are even better (at around 8g per cup, compared to the 5g or so depending on the size of an apple/banana)
Processed cereals → Oats
5g fiber per cup. Enough said.
Summary
Far from being a Herculean task, getting >30g of fiber per day can be easily accomplished by a lentil ragù with wholewheat pasta.
If your breakfast is overnight oats with fruit and some chopped almonds, you can make it to >20g already by the time you’ve finished your first meal of the day.
Enjoy!
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