11 Things That Can Change Your Eye Color

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Eye color is generally considered so static that iris scans are considered a reasonable security method. However, it can indeed change—mostly for reasons you won’t want, though:

Ringing the changes

Putting aside any wishes of being a manga protagonist with violet eyes, here are the self-changing options:

  • Aging in babies: babies are often born with lighter eyes, which can darken as melanocytes develop during the first few months of life. This is similar to how a small child’s blonde hair can often be much darker by the time puberty hits!
  • Aging in adults: eyes may continue to darken until adulthood, while aging into the elderly years can cause them to lighten due to conditions like arcus senilis
  • Horner’s syndrome: a nerve disorder that can cause the eyes to become lighter due to loss of pigment
  • Fuchs heterochromic iridocyclitis: an inflammation of the iris that leads to lighter eyes over time
  • Pigment dispersion syndrome: the iris rubs against eye fibers, leading to pigment loss and lighter eyes
  • Kayser-Fleischer rings: excess copper deposits on the cornea, often due to Wilson’s disease, causing larger-than-usual brown or grayish rings around the iris
  • Iris melanoma: a rare cancer that can darken the iris, often presenting as brown spots
  • Cancer treatments: chemotherapy for retinoblastoma in children can result in lighter eye color and heterochromia
  • Medications: prostaglandin-based glaucoma treatments can darken the iris, with up to 23% of patients seeing this effect
  • Vitiligo: an autoimmune disorder that destroys melanocytes, mostly noticed in the skin, but also causing patchy loss of pigment in the iris
  • Emotional and pupil size changes: emotions and trauma can affect pupil size, making eyes appear darker or lighter temporarily by altering how much of the iris is visible

For more about all these, and some notes about more voluntary changes (if you have certain kinds of eye surgery), enjoy:

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Understanding And Slowing The Progression Of Cataracts

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  • Watermelon vs Cucumber – Which is Healthier?

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    Our Verdict

    When comparing watermelon to cucumber, we picked the cucumber.

    Why?

    Both are good! But in the battle of the “this is mostly water” salad items, cucumber wins out.

    In terms of macros they both are, as we say, mostly water. However, watermelon contains more sugar for the same amount of fiber, contributing to cucumber having the lower glycemic index.

    When it comes to vitamins, watermelon does a little better; watermelon has more of vitamins A, B1, B3, B6, C, and E, while cucumber has more of vitamins B2, B5, B9, K, and choline. So, a modest 6:5 win for watermelon.

    In the category of minerals, it’s a different story; watermelon has more selenium, while cucumber has more calcium, iron, magnesium, manganese, phosphorus, potassium, and zinc.

    Both contain an array of polyphenols; mostly different ones from each other.

    As ever, enjoy both. However, adding up the sections, we say cucumber enjoys a marginal win here.

    Want to learn more?

    You might like to read:

    Take care!

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  • What Grief Does To Your Body (And How To Manage It)

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    What Grief Does To The Body (And How To Manage It)

    In life, we will almost all lose loved ones and suffer bereavement. For most people, this starts with grandparents, eventually moves to parents, and then people our own generation; partners, siblings, close friends. And of course, sometimes and perhaps most devastatingly, we can lose people younger than ourselves.

    For something that almost everyone suffers, there is often very little in the way of preparation given beforehand, and afterwards, a condolences card is nice but can’t do a lot for our mental health.

    And with mental health, our physical health can go too, if we very understandably neglect it at such a time.

    So, how to survive devastating loss, and come out the other side, hopefully thriving? It seems like a tall order indeed.

    First, the foundations:

    You’re probably familiar with the stages of grief. In their most commonly-presented form, they are:

    1. Denial
    2. Anger
    3. Bargaining
    4. Depression
    5. Acceptance

    You’ve probably also heard/read that we won’t always go through them in order, and also that grief is deeply personal and proceeds on its own timescale.

    It is generally considered healthy to go through them.

    What do they look like?

    Naturally this can vary a lot from person to person, but examples in the case of bereavement could be:

    1. Denial: “This surely has not really happened; I’ll carry on as though it hasn’t”
    2. Anger: “Why didn’t I do xyz differently while I had the chance?!”
    3. Bargaining: “I will do such-and-such in their honor, and this will be a way of expressing the love I wish I could give them in a way they could receive”
    4. Depression: “What is the point of me without them? The sooner I join them, the better.”
    5. Acceptance: “I was so lucky that we had the time together that we did, and enriched each other’s lives while we could”

    We can speedrun these or we can get stuck on one for years. We can bounce back and forth. We can think we’re at acceptance, and then a previous stage will hit us like a tonne of bricks.

    What if we don’t?

    Assuming that our lost loved one was indeed a loved one (as opposed to someone we are merely societally expected to mourn), then failing to process that grief will tend to have a big impact on our life—and health. These health problems can include:

    As you can see, three out of five of those can result in death. The other two aren’t great either. So why isn’t this taken more seriously as a matter of health?

    Death is, ironically, considered something we “just have to live with”.

    But how?

    Coping strategies

    You’ll note that most of the stages of grief are not enjoyable per se. For this reason, it’s common to try to avoid them—hence denial usually being first.

    But, that is like not getting a lump checked out because you don’t want a cancer diagnosis. The emotional reasoning is understandable, but it’s ultimately self-destructive.

    First, have a plan. If a death is foreseen, you can even work out this plan together.

    But even if that time has now passed, it’s “better late than never” to make a plan for looking after yourself, e.g:

    • How you will try to get enough sleep (tricky, but sincerely try)
    • How you will remember to eat (and ideally, healthily)
    • How you will still get exercise (a walk in the park is fine; see some greenery and get some sunlight)
    • How you will avoid self-destructive urges (from indirect, e.g. drinking, to direct, e.g. suicidality)
    • How you will keep up with the other things important in your life (work, friends, family)
    • How you will actively work to process your grief (e.g. journaling, or perhaps grief counselling)

    Some previous articles of ours that may help:

    If it works, it works

    If we are all unique, then any relationship between any two people is uniqueness squared. Little wonder, then, that our grief may be unique too. And it can be complicated further:

    • Sometimes we had a complicated relationship with someone
    • Sometimes the circumstances of their death were complicated

    There is, for that matter, such a thing as “complicated grief”:

    Read more: Complicated grief and prolonged grief disorder (Medical News Today)

    We also previously reviewed a book on “ambiguous loss”, exploring grieving when we cannot grieve in the normal way because someone is gone and/but/maybe not gone.

    For example, if someone is in a long-term coma from which they may never recover, or if they are missing-presumed-dead. Those kinds of situations are complicated too.

    Unusual circumstances may call for unusual coping strategies, so how can we discern what is healthy and what isn’t?

    The litmus test is: is it enabling you to continue going about your life in a way that allows you to fulfil your internal personal aspirations and external social responsibilities? If so, it’s probably healthy.

    Look after yourself. And if you can, tell your loved ones you love them today.

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  • ADHD For Smart Ass Women – by Tracy Otsuka

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    We’ve reviewed books about ADHD in adults before, what makes this one different? It’s the wholly female focus. Which is not to say some things won’t apply to men too, they will.

    But while most books assume a male default unless it’s “bikini zone” health issues, this one is written by a woman for women focusing on the (biological and social) differences in ADHD for us.

    A strength of the book is that it neither seeks to:

    • over-medicalize things in a way that any deviation from the norm is inherently bad and must be fixed, nor
    • pretend that everything’s a bonus, that we are superpowered and beautiful and perfect and capable and have no faults that might ever need addressing actually

    …instead, it gives a good explanation of the ins and outs of ADHD in women, the strengths and weaknesses that this brings, and good solid advice on how to play to the strengths and reduce (or at least work around) the weaknesses.

    Bottom line: this book has been described as “ADHD 2.0 (a very popular book that we’ve reviewed previously), but for women”, and it deserves that.

    Click here to check out ADHD for Smart Ass Women, and fall in love with your neurodivergent brain!

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  • Viruses aren’t always harmful. 6 ways they’re used in health care and pest control

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    We tend to just think of viruses in terms of their damaging impacts on human health and lives. The 1918 flu pandemic killed around 50 million people. Smallpox claimed 30% of those who caught it, and survivors were often scarred and blinded. More recently, we’re all too familiar with the health and economic impacts of COVID.

    But viruses can also be used to benefit human health, agriculture and the environment.

    Viruses are comparatively simple in structure, consisting of a piece of genetic material (RNA or DNA) enclosed in a protein coat (the capsid). Some also have an outer envelope.

    Viruses get into your cells and use your cell machinery to copy themselves.
    Here are six ways we’ve harnessed this for health care and pest control.

    1. To correct genes

    Viruses are used in some gene therapies to correct malfunctioning genes. Genes are DNA sequences that code for a particular protein required for cell function.

    If we remove viral genetic material from the capsid (protein coat) we can use the space to transport a “cargo” into cells. These modified viruses are called “viral vectors”.

    Viruses consist of a piece of RNA or DNA enclosed in a protein coat called the capsid.
    DEXi

    Viral vectors can deliver a functional gene into someone with a genetic disorder whose own gene is not working properly.

    Some genetic diseases treated this way include haemophilia, sickle cell disease and beta thalassaemia.

    2. Treat cancer

    Viral vectors can be used to treat cancer.

    Healthy people have p53, a tumour-suppressor gene. About half of cancers are associated with the loss of p53.

    Replacing the damaged p53 gene using a viral vector stops the cancerous cell from replicating and tells it to suicide (apoptosis).

    Viral vectors can also be used to deliver an inactive drug to a tumour, where it is then activated to kill the tumour cell.

    This targeted therapy reduces the side effects otherwise seen with cytotoxic (cell-killing) drugs.

    We can also use oncolytic (cancer cell-destroying) viruses to treat some types of cancer.

    Tumour cells have often lost their antiviral defences. In the case of melanoma, a modified herpes simplex virus can kill rapidly dividing melanoma cells while largely leaving non-tumour cells alone.

    3. Create immune responses

    Viral vectors can create a protective immune response to a particular viral antigen.

    One COVID vaccine uses a modified chimp adenovirus (adenoviruses cause the common cold in humans) to transport RNA coding for the SARS-CoV-2 spike protein into human cells.

    The RNA is then used to make spike protein copies, which stimulate our immune cells to replicate and “remember” the spike protein.

    Then, when you are exposed to SARS-CoV-2 for real, your immune system can churn out lots of antibodies and virus-killing cells very quickly to prevent or reduce the severity of infection.

    4. Act as vaccines

    Viruses can be modified to act directly as vaccines themselves in several ways.

    We can weaken a virus (for an attenuated virus vaccine) so it doesn’t cause infection in a healthy host but can still replicate to stimulate the immune response. The chickenpox vaccine works like this.

    The Salk vaccine for polio uses a whole virus that has been inactivated (so it can’t cause disease).

    Others use a small part of the virus such as a capsid protein to stimulate an immune response (subunit vaccines).

    An mRNA vaccine packages up viral RNA for a specific protein that will stimulate an immune response.

    5. Kill bacteria

    Viruses can – in limited situations in Australia – be used to treat antibiotic-resistant bacterial infections.

    Bacteriophages are viruses that kill bacteria. Each type of phage usually infects a particular species of bacteria.

    Unlike antibiotics – which often kill “good” bacteria along with the disease-causing ones – phage therapy leaves your normal flora (useful microbes) intact.

    A phage
    Bacteriophages (red) are viruses that kill bacteria (green).
    Shutterstock

    6. Target plant, fungal or animal pests

    Viruses can be species-specific (infecting one species only) and even cell-specific (infecting one type of cell only).

    This occurs because the proteins viruses use to attach to cells have a shape that binds to a specific type of cell receptor or molecule, like a specific key fits a lock.

    The virus can enter the cells of all species with this receptor/molecule. For example, rabies virus can infect all mammals because we share the right receptor, and mammals have other characteristics that allow infection to occur whereas other non-mammal species don’t.

    When the receptor is only found on one cell type, then the virus will infect that cell type, which may only be found in one or a limited number of species. Hepatitis B virus successfully infects liver cells primarily in humans and chimps.

    We can use that property of specificity to target invasive plant species (reducing the need for chemical herbicides) and pest insects (reducing the need for chemical insecticides). Baculoviruses, for example, are used to control caterpillars.

    Similarly, bacteriophages can be used to control bacterial tomato and grapevine diseases.

    Other viruses reduce plant damage from fungal pests.

    Myxoma virus and calicivirus reduce rabbit populations and their environmental impacts and improve agricultural production.

    Just like humans can be protected against by vaccination, plants can be “immunised” against a disease-causing virus by being exposed to a milder version.The Conversation

    Thea van de Mortel, Professor, Nursing, School of Nursing and Midwifery, Griffith University

    This article is republished from The Conversation under a Creative Commons license. Read the original article.

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  • The Sugar Alcohol That Reduces BMI!

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    Inositol Does-It-Ol’!

    First things first, a quick clarification up-front:

    Myo-inositol or D-chiro-inositol?

    We’re going to be talking about inositol today, which comes in numerous forms, but most importantly:

    • Myo-inositol (myo-Ins)
    • D-chiro-inositol (D-chiro-Ins)

    These are both inositol, (a sugar alcohol!) and for our purposes today, the most relevant form is myo-inositol.

    The studies we’ll look at today are either:

    • just about myo-inositol, or
    • about myo-inositol in the presence of d-chiro-inositol at a 40:1 ratio.

    You have both in your body naturally; wherever supplementation is mentioned, it means supplementing with either:

    • extra myo-inositol (because that’s the one the body more often needs more of), or
    • both, at the 40:1 ratio that we mentioned above (because that’s one way to help balance an imbalanced ratio)

    With that in mind…

    Inositol against diabetes?

    Inositol is known to:

    • decrease insulin resistance
    • increase insulin sensitivity
    • have an important role in cell signaling
    • have an important role in metabolism

    The first two things there both mean that inositol is good against diabetes. It’s not “take this and you’re cured”, but:

    • if you’re pre-diabetic it may help you avoid type 2 diabetes
    • if you are diabetic (either type) it can help in the management of your diabetes.

    It does this by allowing your body to make better use of insulin (regardless of whether that insulin is from your pancreas or from the pharmacy).

    How does it do that? Research is still underway and there’s a lot we don’t know yet, but here’s one way, for example:

    ❝Evidence showed that inositol phosphates might enhance the browning of white adipocytes and directly improve insulin sensitivity through adipocytes❞

    Read: Role of Inositols and Inositol Phosphates in Energy Metabolism

    We mentioned its role in metabolism in a bullet-point above, and we didn’t just mean insulin sensitivity! There’s also…

    Inositol for thyroid function?

    The thyroid is one of the largest endocrine glands in the body, and it controls how quickly the body burns energy, makes proteins, and how sensitive the body should be to other hormones. So, it working correctly or not can have a big impact on everything from your mood to your weight to your energy levels.

    How does inositol affect thyroid function?

    • Inositol has an important role in thyroid function and dealing with autoimmune diseases.
    • Inositol is essential to produce H2O2 (yes, really) required for the synthesis of thyroid hormones.
    • Depletion of inositol may lead to the development of some thyroid diseases, such as hypothyroidism.
    • Inositol supplementation seems to help in the management of thyroid diseases.

    Read: The Role of Inositol in Thyroid Physiology and in Subclinical Hypothyroidism Management

    Inositol for PCOS?

    A systematic review published in the Journal of Gynecological Endocrinology noted:

    • Inositol can restore spontaneous ovarian activity (and consequently fertility) in most patients with PCOS.
    • Myo-inositol is a safe and effective treatment to improve:
      • ovarian function
      • healthy metabolism
      • healthy hormonal balance

    While very comprehensive (which is why we included it here), that review’s a little old, so…

    Check out this cutting edge (Jan 2023) study whose title says it all:

    Inositol is an effective and safe treatment in polycystic ovary syndrome: a systematic review and meta-analysis of randomized controlled trials

    Inositol for fertility?

    Just last year, Mendoza et al published that inositol supplementation, together with antioxidants, vitamins, and minerals, could be an optimal strategy to improve female fertility.

    This built from Gambiole and Forte’s work, which laid out how inositol is a safe compound for many issues related to fertility and pregnancy. In particular, several clinical trials demonstrated that:

    • inositol can have therapeutic effects in infertile women
    • inositol can also be useful as a preventive treatment during pregnancy
    • inositol could prevent the onset of neural tube defects
    • inositol also reduces the occurrence of gestational diabetes

    Due to the safety and efficiency of inositol, it can take the place of many drugs that are contraindicated in pregnancy. Basically: take this, and you’ll need fewer other drugs. Always a win!

    Read: Myo-Inositol as a Key Supporter of Fertility and Physiological Gestation

    Inositol For Weight Loss

    We promised you “this alcohol sugar can reduce your BMI”, and we weren’t making it up!

    Zarezadeh et al conducited a very extensive systematic review, and found:

    • Oral inositol supplementation has positive effect on BMI reduction.
    • Inositol in the form of myo-inositol had the strongest effect on BMI reduction.
    • Participants with PCOS and/or who were overweight, experienced the most significant improvement of all.

    Want some inositol?

    As ever, we don’t sell it (or anything else), but for your convenience, here’s myo-inositol and d-chiro-inositol at a 40:1 ratio, available on Amazon!

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  • Atomic Habits – by James Clear

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    James Clear’s Atomic Habits has become “the” go-to book about the power of habit-forming. And, there’s no shortage of competition out there, so that’s quite a statement. What makes this book stand out?

    A lot of books start by assuming you want to build habits. That can seem a fair assumption; after all, we picked up the book! But an introductory chapter really hammers home the idea in a way that makes it a lot more motivational:

    • Habits are the compound interest of productivity
    • This means that progress is not linear, but exponential
    • Habits can also be stacked, and thus become synergistic
    • The more positive habits you add incrementally, the easier they become because each thing is making your life easier/better

    For example:

    • It’s easier to save money if you’re in good health
    • It’s easier to sleep better if you do not have financial worries
    • It’s easier to build your relationship with your loved ones if you’re not tired

    …and so on.

    For many people this presents a Catch-22 problem! Clear instead presents it as an opportunity… Start wherever you like, but just start small, with some two-minute thing, and build from there.

    A lot of the book is given over to:

    • how to form effective habits (using his “Four Laws”)
    • how to build them into your life
    • how to handle mishaps
    • how to make sure your habits are working for you
    • how to see habits as part of your identity, and not just a goal to be checked off

    The last one is perhaps key—goals cease to be motivating once accomplished. Habits, on the other hand, keep spiralling upwards (if you guide them appropriately).

    There’s lots more we could say, but it’s a one-minute book review, so we’ll just close by saying:

    This book can help you to become the kind of person who genuinely gets a little better each day, and reaps the benefits over time.

    Get your copy of Atomic Habits from Amazon today!

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