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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Pistachios vs Pecans – Which is Healthier?
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Our Verdict
When comparing pistachios to pecans, we picked the pistachios.
Why?
Firstly, the macronutrients: pistachios have twice as much protein and fiber. Pecans have more fat, though in both of these nuts the fats are healthy.
The category of vitamins is an easy win for pistachios, with a lot more of vitamins A, B1, B2, B3, B6, B9, C, and E. Especially the 8x vitamin A, 7x vitamin B6, 4x vitamin C, and 2x vitamin E, and as the percentages are good too, these aren’t small differences. Pecans, meanwhile, boast only a little more vitamin B5 (pantothenic acid, the one whose name means “it’s everywhere”, because that’s how easy it is to get it).
In terms of minerals, pistachios have more calcium, iron, phosphorus, potassium, and selenium, while pecans have more manganese and zinc. So, a fair win for pistachios on this one.
Adding up the three different kinds of win for pistachios means that *drumroll* pistachios win overall, and it’s not close.
As ever, do enjoy both though, because diversity is healthy!
Want to learn more?
You might like to read:
Take care!
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Radical Longevity – by Dr. Ann Gittleman
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Dr. Gittleman takes a comprehensive approach, advising us about avoiding AGEs, freeing up fascia, stimulating cellular rejuvenation, the mind-gut connection, keeping the immune system healthy, and more.
The “plan” promised by the subtitle involves identifying the key factors of nutrition and lifestyle most impactful to you, and adjusting them accordingly, in a multistep, author-walks-the-reader-by-the-hand process.
There’s also, for those who prefer it, a large section (seven chapters) on a body part/system by body part/system approach, e.g. brain health, heart health, revitalizing skin, reversing hair loss, repairing bones, muscles, joints, etc.
The writing style is quite casual,butalso with a mind to education, with its call-out boxes, bullet-point summaries, and so forth. There is a “select references” section, but if one wants to find studies, it’s often necessary to go looking, as there aren’t inline citations.
Bottom line: we’d love to see better referencing, but otherwise this is a top-tier anti-aging book, and a lot more accessible than most, without skimping on depth and breadth.
Click here to check out Radical Longevity, and get rejuvenating radically!
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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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Avocado Oil vs Olive Oil – Which is Healthier?
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Our Verdict
When comparing avocado oil to olive oil, we picked the olive oil.
Why?
Avocados and olives are both very healthy foods. However, when they are made into oils, there’s an important distinguishing factor:
Olive oil usually retains a lot of the micronutrients from the olives (including vitamins E and K), whereas no measurable micronutrients usually remain in avocado oil.
So while both olive oil and avocado oil have a similar (excellent; very heart-healthy!) lipids profile, the olive oil has some bonuses that the avocado oil doesn’t.
We haven’t written about the nutritional profiles of either avocados or olives yet, but here’s what we had to say on the different kinds of olive oil available:
And here’s an example of a good one on Amazon, for your convenience 😎
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Is white rice bad for me? Can I make it lower GI or healthier?
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Rice is a culinary staple in Australia and around the world.
It might seem like a given that brown rice is healthier than white and official public health resources often recommend brown rice instead of white as a “healthy swap”.
But Australians definitely prefer white rice over brown. So, what’s the difference, and what do we need to know when choosing rice?
Dragne Marius/Unsplash What makes rice white or brown?
Rice “grains” are technically seeds. A complete, whole rice seed is called a “paddy”, which has multiple parts:
- the “hull” is the hard outer layer which protects the seed
- the “bran”, which is a softer protective layer containing the seed coat
- the “germ” or the embryo, which is the part of the seed that would develop into a new plant if was germinated
- the “endosperm”, which makes up most of the seed and is essentially the store of nutrients that feeds the developing plant as a seed grows into a plant.
Rice needs to be processed for humans to eat it.
Along with cleaning and drying, the hard hulls are removed since we can’t digest them. This is how brown rice is made, with the other three parts of the rice remaining intact. This means brown rice is regarded as a “wholegrain”.
White rice, however, is a “refined” grain, as it is further polished to remove the bran and germ, leaving just the endosperm. This is a mechanical and not a chemical process.
What’s the difference, nutritionally?
Keeping the bran and the germ means brown rice has more magnesium, phosphorus, potassium B vitamins (niacin, folate, riboflavin and pyridoxine), iron, zinc and fibre.
The germ and the bran also contain more bioactives (compounds in foods that aren’t essential nutrients but have health benefits), like oryzanols and phenolic compounds which have antioxidant effects.
Brown rice is cleaned and dried and the hard hulls are removed. Sung Min/Shutterstock But that doesn’t mean white rice is just empty calories. It still contains vitamins, minerals and some fibre, and is low in fat and salt, and is naturally gluten-free.
White and brown rice actually have similar amounts of calories (or kilojoules) and total carbohydrates.
There are studies that show eating more white rice is linked to a higher risk of type 2 diabetes. But it is difficult to know if this is down to the rice itself, or other related factors such as socioeconomic variables or other dietary patterns.
What about the glycaemic index?
The higher fibre means brown rice has a lower glycaemic index (GI), meaning it raises blood sugar levels more slowly. But this is highly variable between different rices within the white and brown categories.
The GI system uses low (less than 55), medium (55–70) and high (above 70) categories. Brown rices fall into the low and medium categories. White rices fall in the medium and high.
There are specific low-GI types available for both white and brown types. You can also lower the GI of rice by heating and then cooling it. This process converts some of the “available carbohydrates” into “resistant starch”, which then functions like dietary fibre.
Are there any benefits to white rice?
The taste and textural qualities of white and brown rices differ. White rice tends to have a softer texture and more mild or neutral flavour. Brown rice has a chewier texture and nuttier flavour.
So, while you can technically substitute brown rice into most recipes, the experience will be different. Or other ingredients may need to be added or changed to create the desired texture.
Removing more of the outer layers may also reduce the levels of contaminants such as pesticides.
We don’t just eat rice
You’ll likely have vegetables and protein with your rice. Chay_Tee/Shutterstock Comparing white and brown rice seems like an easy way to boost nutritional value. But just because one food (brown rice) is more nutrient-dense doesn’t make the other food (white rice) “bad”.
Ultimately, it’s not often that we eat just rice, so we don’t need the rice we choose to be the perfect one. Rice is typically the staple base of a more complex dish. So, it’s probably more important to think about what we eat with rice.
Adding vegetables and lean proteins to rice-based dishes can easily add the micronutrients, bioactives and fibre that white rice is comparatively lacking, and this can likely do more to contribute to diet quality than eating brown rice instead.
Emma Beckett, Adjunct Senior Lecturer, Nutrition, Dietetics & Food Innovation – School of Health Sciences, UNSW Sydney
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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How to Stop Negative Thinking – by Daniel Paul
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Just think positive thoughts” is all well and good, but it doesn’t get much mileage in the real world, does it?
What Daniel Paul offers is a lot better than that. Taking a CBT approach, he recommends tips and tricks, gives explanations and exercises, and in short, puts tools in the reader’s toolbox.
But it doesn’t stop at just stopping negative thinking. Rather, it takes a holistic approach to also improve your general life…
- Bookending your day with a good start and finish
- Scheduling a time for any negative thinking that does need to occur (again with the useful realism!)
- Inviting the reader to take on small challenges, of the kind that’ll have knock-on effects that add and multiply and compound as we go
The format is very easy-reading, and we love that there are clear section headings and chapter summaries, too.
Bottom line: definitely a book with the potential to improve your life from day one, and that’ll keep you coming back to it as a cheatsheet and references source.
Get your copy of “How to Stop Negative Thinking” from Amazon today!
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