Could my glasses be making my eyesight worse?
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So, you got your eyesight tested and found out you need your first pair of glasses. Or you found out you need a stronger pair than the ones you have. You put them on and everything looks crystal clear. But after a few weeks things look blurrier without them than they did before your eye test. What’s going on?
Some people start to wear spectacles for the first time and perceive their vision is “bad” when they take their glasses off. They incorrectly interpret this as the glasses making their vision worse. Fear of this might make them less likely to wear their glasses.
But what they are noticing is how much better the world appears through the glasses. They become less tolerant of a blurry world when they remove them.
Here are some other things you might notice about eyesight and wearing glasses.
Lazy eyes?
Some people sense an increasing reliance on glasses and wonder if their eyes have become “lazy”.
Our eyes work in much the same way as an auto-focus camera. A flexible lens inside each eye is controlled by muscles that let us focus on objects in the distance (such as a footy scoreboard) by relaxing the muscle to flatten the lens. When the muscle contracts it makes the lens steeper and more powerful to see things that are much closer to us (such as a text message).
From the age of about 40, the lens in our eye progressively hardens and loses its ability to change shape. Gradually, we lose our capacity to focus on near objects. This is called “presbyopia” and at the moment there are no treatments for this lens hardening.
Optometrists correct this with prescription glasses that take the load of your natural lens. The lenses allow you to see those up-close images clearly by providing extra refractive power.
Once we are used to seeing clearly, our tolerance for blurry vision will be lower and we will reach for the glasses to see well again.
The wrong glasses?
Wearing old glasses, the wrong prescription (or even someone else’s glasses) won’t allow you to see as well as possible for day-to-day tasks. It could also cause eyestrain and headaches.
Incorrectly prescribed or dispensed prescription glasses can lead to vision impairment in children as their visual system is still in development.
But it is more common for kids to develop long-term vision problems as a result of not wearing glasses when they need them.
By the time children are about 10–12 years of age, wearing incorrect spectacles is less likely to cause their eyes to become lazy or damage vision in the long term, but it is likely to result in blurry or uncomfortable vision during daily wear.
Registered optometrists in Australia are trained to assess refractive error (whether the eye focuses light into the retina) as well as the different aspects of ocular function (including how the eyes work together, change focus, move around to see objects). All of these help us see clearly and comfortably.
What about dirty glasses?
Dirty or scratched glasses can give you the impression your vision is worse than it actually is. Just like a window, the dirtier your glasses are, the more difficult it is to see clearly through them. Cleaning glasses regularly with a microfibre lens cloth will help.
While dirty glasses are not commonly associated with eye infections, some research suggests dirty glasses can harbour bacteria with the remote but theoretical potential to cause eye infection.
To ensure best possible vision, people who wear prescription glasses every day should clean their lenses at least every morning and twice a day where required. Cleaning frames with alcohol wipes can reduce bacterial contamination by 96% – but care should be taken as alcohol can damage some frames, depending on what they are made of.
When should I get my eyes checked?
Regular eye exams, starting just before school age, are important for ocular health. Most prescriptions for corrective glasses expire within two years and contact lens prescriptions often expire after a year. So you’ll need an eye check for a new pair every year or so.
Kids with ocular conditions such as progressive myopia (short-sightedness), strabismus (poor eye alignment), or amblyopia (reduced vision in one eye) will need checks at least every year, but likely more often. Likewise, people over 65 or who have known eye conditions, such as glaucoma, will be recommended more frequent checks.
An online prescription estimator is no substitute for a full eye examination. If you have a valid prescription then you can order glasses online, but you miss out on the ability to check the fit of the frame or to have them adjusted properly. This is particularly important for multifocal lenses where even a millimetre or two of misalignment can cause uncomfortable or blurry vision.
Conditions such as diabetes or high blood pressure, can affect the eyes so regular eye checks can also help flag broader health issues. The vast majority of eye conditions can be treated if caught early, highlighting the importance of regular preventative care.
James Andrew Armitage, Professor of Optometry and Course Director, Deakin University and Nick Hockley, Lecturer in Optometric Clinical Skills, Director Deakin Collaborative Eye Care Clinic, Deakin University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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The Drug & Supplement Combo That Reverses Aging
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So far, its effects have been dramatic (in a good way) in mice; human trials are now underway.
How does it work?
It builds from previous work, in which a Japanese research team created an “anti-aging vaccine”, that responded to a problem more specific than aging as a whole, namely atherosclerosis.
They found that a certain* protein was upregulated (i.e., it was made at a greater rate resulting in greater quantities) in patients (mouse and human alike) with atherosclerosis. So, they immunized the mice against that protein, and long story short, everything improved for them, from their atherosclerosis to general markers of aging—including growing back fur that had been lost due to age-related balding (just like in humans). They also lived longer, as is to be expected of a mouse who is now biologically younger.
*To avoid being mysterious: it was glycoprotein nonmetastatic melanoma protein B, known to its friends as GPNMB.
You may be wondering: how can one be immunized against a protein? If so, do bear in mind, a virus is also a protein. In this case, they developed an RNA vaccine, that works in a similar way to the COVID vaccines we all know and love (albeit with a different target).
You can read about this in abundant detail here: Senolytic vaccination improves normal and pathological age-related phenotypes and increases lifespan in progeroid mice
Hot on the heels of that, new approaches were found, including…
The combination
We’ll not keep you waiting; the combination is dasatinib plus quercetin, or else fisetin alone.
It’s about killing senescent (aging) “zombie cells” while sparing healthy cells, which that drug (dasatinib) and those supplements (quercetin and fisetin) do.
The researchers noted:
❝Senescent cells are resistant to apoptosis, which is governed through the upregulation of senescent cell anti-apoptotic pathways (SCAPs). Compounds were subsequently identified that disrupted the SCAPs, inducing death of senescent cells while leaving healthy cells unaffected. Forty-six potential senolytic agents were discovered through this process. To advance translational efforts, the majority of research has focused on agents with known safety profiles and limited off-target effects (Kirkland and Tchkonia, 2020).
The best characterized senolytic agents are dasatinib, a tyrosine kinase inhibitor approved for use in humans for cancer treatment, and quercetin, a naturally occurring plant flavonoid. The agents have a synergistic effect, making their combination more potent for senescent cell clearance (Zhu et al., 2015). As senescent cells do not divide and accumulate over a period of weeks, they can be administered using an intermittent approach, which further serves to reduce the risk of side effects (Kirkland and Tchkonia, 2020).
In preclinical trials, the combination of dasatinib and quercetin (D + Q) have been found to alleviate numerous chronic medical conditions including vascular stiffness, osteoporosis, frailty, and hepatic stenosis❞
Source: A geroscience motivated approach to treat Alzheimer’s disease: Senolytics move to clinical trials
As to how they expanded on this research:
❝In our study, oral D + Q were intermittently administered to tau transgenic mice with late-stage pathology (approximated to a 70-year-old human with advanced AD) (Musi et al., 2018). The treatment effectively reduced cellular senescence and associated senescence-associated secretory phenotype incidence. The 35 % reduction in neurofibrillary tangles was accompanied by enhanced neuron density, decreased ventricular enlargement, diminished tau accumulation, and restoration of aberrant cerebral blood flow. A subsequent preclinical study validated the findings, reporting that intermittently administered D + Q cleared senescent cells in the central nervous system, reduced amyloid-β plaques, attenuated neuroinflammation, and enhanced cognition❞
Source: Ibid.
And now taking it to humans:
❝The first clinical trial of D + Q for early-stage Alzheimer’s Disease (AD) has completed enrollment (Gonzales et al., 2021). The primary aim of the open-label pilot study was to examine the central nervous system penetrance of D and Q in a small sample of older adults with early-stage AD (NCT04063124). In addition, two placebo-controlled trials of D + Q for neurodegenerative disease are underway (NCT04685590 and NCT04785300).
One of the trials in development is a multi-site, double-blind, randomized, placebo-controlled study of senolytic therapy in older adults with amnestic mild cognitive impairment (MCI) or early-stage dementia (Clinical Dementia Rating Scale (CDR) Global 0.5–1) due to AD (elevated CSF total tau/Aβ42 ratio).
The treatment regimen will consist of 12-weeks of intermittently administered oral D + Q.❞
Source: Ibid.
The study is actually completed now, but its results are not yet published (again, at time of writing). Which means: they have the data, and now they’re writing the paper.
We look forward to providing an update about that, when the paper is published!
In the meantime…
Dasatinib is a drug usually prescribed to people with certain kinds of leukemia, and suffice it to say, it’s prescription-only. And unlike drugs that are often prescribed off-label (such as metformin for weight loss), getting your doctor to prescribe you an anticancer drug is unlikely unless you have the cancer in question.
You may be wondering: how is an anticancer drug helpful against aging? And the answer is that cancer and aging are very interrelated, and both have to do with “these old cells just won’t die, and are using the resources needed for young healthy cells”. So in both cases, killing those “zombie cells” while sparing healthy ones, is what’s needed. However, your doctor will probably not buy that as a reason to prescribe you a drug that is technically chemotherapy.
Quercetin, on the other hand, is a readily-available supplement, as is fisetin, and both have glowing (in a good way) safety profiles.
Want to know more?
You can read more about each of quercetin and fisetin (including how to get them), here:
Enjoy!
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Sleep Through Insomnia – by Dr. Brandon Peters
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First, what this is not: a guide to get better sleep tonight.
Rather, what it is: a guide to get better sleep in the near future (six weeks).
The way it delivers this is primarily Cognitive Behavioral Therapy for Insomnia (CBT-I), in 6 weekly lessons, each divided into 3 activities:
- Reflection
- Education
- Setting goals
Now, all parts are important, but we’d say the biggest value here is in the education segment, in part because it helps the reader understand why the reflection is important, and how to usefully set the goals.
“Reflection” may sound quite wishy-washy, but in fact it is very science-based, with questions as prompts, which effectively amount to the “gathering data” part of science.
“Setting goals”, for its part, is intended to be a progressive, step-by-step approach to get you to where you want to be with your sleep.
The style is instructional pop-science, with everything made easy to understand. There are an abundance of scientific references for those who wish to delve further, and sometimes he does go into more neurological detail than a book written by a psychologist might (Dr. Peters being a medical doctor, board-certified in neurology and sleep medicine, and with extensive training in CBT-I).
Bottom line: if you’d like to sleep better and you have the will to commit to a 6-week program (which will not ask anything arduous of you, but you will need to show up for it and do the things), then this book can give you a much better long-term fix than telling you to change your sheets and put your phone away.
Click here to check out Sleep Through Insomnia, and sleep easy!
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Slowing the Progression of Cataracts
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Understanding Cataracts
Cataracts are natural and impact everyone.
That’s a bit of a daunting opening line, but as Dr. Michele Lee, a board-certified ophthalmologist, explains, cataracts naturally develop with age, and can be accelerated by factors such as trauma, certain medications, and specific eye conditions.
We know how important your vision is to you (we’ve had great feedback about the book Vision for Life) as well as our articles on how glasses impact your eyesight and the effects of using eye drops.
While complete prevention isn’t possible, steps such as those mentioned below can be taken to slow their progression.
Here is an overview of the video’s first 3 takeaways. You can watch the whole video below.
Protect Your Eyes from Sunlight
Simply put, UV light damages lens proteins, which (significantly) contributes to cataracts. Wearing sunglasses can supposedly prevent up to 20% of cataracts caused by UV exposure.
Moderate Alcohol Consumption
We all, at some level, know that alcohol consumption doesn’t do us any good. Your eye health isn’t an exception to the rule; alcohol has been shown to contribute to cataract development.
If you’re looking at reducing your alcohol use, try reading this guide on lowering, or eradicating, alcohol consumption.
Avoid Smoking
Smokers are 2-3 times more likely to develop cataracts. Additionally, ensure good ventilation while cooking to avoid exposure to harmful indoor smoke.
See all 5 steps in the below video:
How was the video? If you’ve discovered any great videos yourself that you’d like to share with fellow 10almonds readers, then please do email them to us!
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The Lupus Encyclopedia – by Dr. Donald Thomas
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First, a note on the authorship: while this is broadly by Donald E. Thomas Jr. MD FACP FACR, there were more contributors, namely:
Jemima Albayda, MD; Divya Angra, MD; Alan N. Baer, MD; Sasha Bernatsky, MD, PhD; George Bertsias, MD, PhD; Ashira D. Blazer, MD; Ian Bruce, MD; Jill Buyon, MD; Yashaar Chaichian, MD; Maria Chou, MD; Sharon Christie, Esq; Angelique N. Collamer, MD; Ashté Collins, MD; Caitlin O. Cruz, MD; Mark M. Cruz, MD; Dana DiRenzo, MD; Jess D. Edison, MD; Titilola Falasinnu, PhD; Andrea Fava, MD; Cheri Frey, MD; Neda F. Gould, PhD; Nishant Gupta, MD; Sarthak Gupta, MD; Sarfaraz Hasni, MD; David Hunt, MD; Mariana J. Kaplan, MD; Alfred Kim, MD; Deborah Lyu Kim, DO; Rukmini Konatalapalli, MD; Fotios Koumpouras, MD; Vasileios C. Kyttaris, MD; Jerik Leung, MPH; Hector A. Medina, MD; Timothy Niewold, MD; Julie Nusbaum, MD; Ginette Okoye, MD; Sarah L. Patterson, MD; Ziv Paz, MD; Darryn Potosky, MD; Rachel C. Robbins, MD; Neha S. Shah, MD; Matthew A. Sherman, MD; Yevgeniy Sheyn, MD; Julia F. Simard, ScD; Jonathan Solomon, MD; Rodger Stitt, MD; George Stojan, MD; Sangeeta Sule, MD; Barbara Taylor, CPPM, CRHC; George Tsokos, MD; Ian Ward, MD; Emma Weeding, MD; Arthur Weinstein, MD; Sean A. Whelton, MD
The reason we mention this is to render it clear that this isn’t one man’s opinions (as happens with many books about certain topics), but rather, a panel of that many doctors all agreeing that this is correct and good, evidence-based, up-to-date (as of the publication of this latest revised edition last year) information.
And if you have lupus, you’ll be aware there are a lot of doctors who don’t know a tremendous amount about it, hence the value of this “…for patients and healthcare providers” tome.
It is what it claims to be: a very comprehensive guide. It’s not light reading, and it is 848 pages of information-dense text and diagrams. If you want to know something, anything, about lupus, then if science knows it, then chances are it is in this book, or this book will at least point you directly to a paper you can read about your specific query.
The style is, nevertheless, about as readable for the layperson as possible, which is quite an achievement for a book with this amount of dense scientific information. For that, the author thanks his husband, for being the non-doctor beta-reader to screen it for readability—quite a service, with all those doctors writing!
Bottom line: if you or someone you love has lupus, this book should absolutely be in your collection.
Click here to check out The Lupus Encyclopedia, and have everything at your fingertips!
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Easy Ways To Fix Brittle, Dry, Wiry Hair
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Dr. Sam Ellis, a dermatologist, specializes in skin, hair, and nail care—and she’s here with professional knowledge:
Tackling the problem at the root
As we age, hair becomes less shiny, more brittle, coarse, wiry, or gray. More concerningly for many, hair thinning and shedding increases due to shortened growth phases and hormonal changes.
The first set of symptoms there are largely because sebum production decreases, leading to dry hair. It’s worth bearing in mind though, that factors like UV radiation, smoking, stress, and genetics contribute to hair aging too. So while we can’t do much about genetics, the modifiable factors are worth addressing.
Menopause and the corresponding “andropause” impact hair health, and hormonal shifts, not just aging, drive many hair changes. Which is good to know, because it means that HRT (mostly: topping up estrogen or testosterone as appropriate) can make a big difference. Additionally, topical/oral minoxidil and DHT blockers (such as finasteride or dutasteride) can boost hair density. These things come with caveats though, so do research any possible treatment plan before embarking on it, to be sure you are comfortable with all aspects of it—including that if you use minoxidil, while on the one hand it indeed works wonders, on the other hand, you’ll then have to keep using minoxidil for the rest of your life or your hair will fall out when you stop. So, that’s a commitment to be thought through before beginning.
Nutritional deficiencies (iron, zinc, vitamin D) and insufficient protein intake hinder hair growth, so ensure proper nutrition, with sufficient protein and micronutrients.
While we’re on the topic of “from the inside” things: take care to manage stress healthily, as stress negatively affects hair health.
Now, as for “from the outside”…
Dr. Ellis recommends moisturizing shampoos/conditioners; Virtue and Dove brands she mentions positively. She also recommends bond repair products (such as K18 and Olaplex) that restore hair integrity, and heat protectants (she recommends: Unite 7 Seconds) as well as hair oils in general that improve hair condition.
For more on all of this, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
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Pinto Beans vs Fava Beans – Which is Healthier?
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Our Verdict
When comparing pinto beans to fava beans, we picked the pinto beans.
Why?
It wasn’t close!
In terms of macros, pinto beans have more protein and carbs, and much more fiber, resulting in a much lower glycemic index. We mention this, because while often the GI of two similar foods is similar, in this case pinto beans have a GI of 39 (low), while fava beans have a GI of 79 (high). In other words, not at all close, and pinto beans are the clear winner.
When it comes to vitamins, pinto beans have more of vitamins B1, B5, B6, B7, B9, C, E, K, and choline, while fava beans have more of vitamins B2 and B3. Once again, not close, and that’s before we take into account the margins of difference for those vitamins; the margins of difference are much greater on the pinto beans’ side of the scale, for example pinto beans having 47x more vitamin E, while fava beans have only 43% more vitamin B2. So, orders of magnitude less. A clear win for pinto beans in all respects.
In the category of minerals, pinto beans have more calcium, iron, magnesium, manganese, phosphorus, potassium, and selenium, while fava beans have more copper and zinc. This time, the margins of difference were quite moderate across the board, and/but pinto beans win on clear strength of numbers.
All in all, three clear wins for pinto beans add up to one big clear win for pinto beans.
Enjoy!
Want to learn more?
You might like to read:
What Matters Most For Your Heart? Eat More (Of This) For Lower Blood Pressure
Take care!
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