Sometimes, Perfect Isn’t Practical!

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It’s Q&A Day at 10almonds!

Have a question or a request? We love to hear from you!

In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!

As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!

So, no question/request too big or small

❝10 AM breakfast is not realistic for most. What’s wrong with 8 AM and Evening me at 6. Don’t quite understand the differentiation.❞

(for reference, this is about our “Breakfasting For Health?” main feature)

It’s not terrible to do it the way you suggest It’s just not optimal, either, that’s all!

Breakfasting at 08:00 and then dining at 18:00 is ten hours apart, so no fasting benefits between those. Let’s say you take half an hour to eat dinner, then eat nothing again until breakfast, that’s 18:30 to 08:00, so that’s 13½ hours fasting. You’ll recall that fasting benefits start at 12 hours into the fast, so that means you’d only get 1½ hours of fasting benefits.

As for breakfasting at 08:00 regardless of intermittent fasting considerations, the reason for the conclusion of around 10:00 being optimal, is based on when our body is geared up to eat breakfast and get the most out of that, which the body can’t do immediately upon waking. So if you wake and get sunlight at 08:30, get a little moderate exercise, then by 10:00 your digestive system will be perfectly primed to get the most out of breakfast.

However! This is entirely based on you waking and getting sunlight at 08:30.

So, iff you wake and get sunlight at 06:30, then in that case, breakfasting at 08:00 would give the same benefits as described above. What’s important is the 1½ hour priming-time.

Writer’s note: our hope here is always to be informational, not prescriptive. Take what works for you; ignore what doesn’t fit your lifestyle.

I personally practice intermittent fasting for about 21hrs/day. I breakfast (often on nuts and perhaps a little salad) around 16:00, and dine at around 18:00ish, giving myself a little wiggleroom. I’m not religious about it and will slide it if necessary.

As you can see: that makes what is nominally my breakfast practically a pre-dinner snack, and I clearly ignore the “best to eat in the morning” rule because that’s not consistent with my desire to have a family dinner together in the evening while still practicing the level of fasting that I prefer.

Science is science, and that’s what we report here. How we apply it, however, is up to us all as individuals!

Enjoy!

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  • Voluntary assisted dying is different to suicide. But federal laws conflate them and restrict access to telehealth

    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.

    Voluntary assisted dying is now lawful in every Australian state and will soon begin in the Australian Capital Territory.

    However, it’s illegal to discuss it via telehealth. That means people who live in rural and remote areas, or those who can’t physically go to see a doctor, may not be able to access the scheme.

    A federal private members bill, introduced to parliament last week, aims to change this. So what’s proposed and why is it needed?

    What’s wrong with the current laws?

    Voluntary assisted dying doesn’t meet the definition of suicide under state laws.

    But the Commonwealth Criminal Code prohibits the discussion or dissemination of suicide-related material electronically.

    This opens doctors to the risk of criminal prosecution if they discuss voluntary assisted dying via telehealth.

    Successive Commonwealth attorneys-general have failed to address the conflict between federal and state laws, despite persistent calls from state attorneys-general for necessary clarity.

    This eventually led to voluntary assistant dying doctor Nicholas Carr calling on the Federal Court of Australia to resolve this conflict. Carr sought a declaration to exclude voluntary assisted dying from the definition of suicide under the Criminal Code.

    In November, the court declared voluntary assisted dying was considered suicide for the purpose of the Criminal Code. This meant doctors across Australia were prohibited from using telehealth services for voluntary assisted dying consultations.

    Last week, independent federal MP Kate Chaney introduced a private members bill to create an exemption for voluntary assisted dying by excluding it as suicide for the purpose of the Criminal Code. Here’s why it’s needed.

    Not all patients can physically see a doctor

    Defining voluntary assisted dying as suicide in the Criminal Code disproportionately impacts people living in regional and remote areas. People in the country rely on the use of “carriage services”, such as phone and video consultations, to avoid travelling long distances to consult their doctor.

    Other people with terminal illnesses, whether in regional or urban areas, may be suffering intolerably and unable to physically attend appointments with doctors.

    The prohibition against telehealth goes against the principles of voluntary assisted dying, which are to minimise suffering, maximise quality of life and promote autonomy.

    Old hands hold young hands
    Some people aren’t able to attend doctors’ appointments in person.
    Jeffrey M Levine/Shutterstock

    Doctors don’t want to be involved in ‘suicide’

    Equating voluntary assisted dying with suicide has a direct impact on doctors, who fear criminal prosecution due to the prohibition against using telehealth.

    Some doctors may decide not to help patients who choose voluntary assisted dying, leaving patients in a state of limbo.

    The number of doctors actively participating in voluntary assisted dying is already low. The majority of doctors are located in metropolitan areas or major regional centres, leaving some locations with very few doctors participating in voluntary assisted dying.

    It misclassifies deaths

    In state law, people dying under voluntary assisted dying have the cause of their death registered as “the disease, illness or medical condition that was the grounds for a person to access voluntary assisted dying”, while the manner of dying is recorded as voluntary assisted dying.

    In contrast, only coroners in each state and territory can make a finding of suicide as a cause of death.

    In 2017, voluntary assisted dying was defined in the Coroners Act 2008 (Vic) as not a reportable death, and thus not suicide.

    The language of suicide is inappropriate for explaining how people make a decision to die with dignity under the lawful practice of voluntary assisted dying.

    There is ongoing taboo and stigma attached to suicide. People who opt for and are lawfully eligible to access voluntary assisted dying should not be tainted with the taboo that currently surrounds suicide.

    So what is the solution?

    The only way to remedy this problem is for the federal government to create an exemption in the Criminal Code to allow telehealth appointments to discuss voluntary assisted dying.

    Chaney’s private member’s bill is yet to be debated in federal parliament.

    If it’s unsuccessful, the Commonwealth attorney-general should pass regulations to exempt voluntary assisted dying as suicide.

    A cooperative approach to resolve this conflict of laws is necessary to ensure doctors don’t risk prosecution for assisting eligible people to access voluntary assisted dying, regional and remote patients have access to voluntary assisted dying, families don’t suffer consequences for the erroneous classification of voluntary assisted dying as suicide, and people accessing voluntary assisted dying are not shrouded with the taboo of suicide when accessing a lawful practice to die with dignity.

    Failure to change this will cause unnecessary suffering for patients and doctors alike.The Conversation

    Michaela Estelle Okninski, Lecturer of Law, University of Adelaide; Marc Trabsky, Associate professor, La Trobe University, and Neera Bhatia, Associate Professor in Law, Deakin University

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

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  • The Real Benefit Of Genetic Testing

    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.

    Genetic Testing: Health Benefits & Methods

    Genetic testing is an oft-derided American pastime, but there’s a lot more to it than finding out about your ancestry!

    Note: because there are relatively few companies offering health-related genetic testing services, and we are talking about the benefits of those services, some of this main feature may seem like an advert.

    It’s not; none of those companies are sponsoring us, and if any of them become a sponsor at some point, we’ll make it clear and put it in the clearly-marked sponsor segment.

    As ever, our only goal here is to provide science-backed information, to enable you to make your own, well-informed, decisions.

    Health genomics & genetic testing

    The basic goal of health genomics and genetic testing is to learn:

    • What genetic conditions you have
      • Clearcut genetic conditions, such as Fragile X syndrome, or Huntington’s disease
    • What genetic predispositions you have
      • Such as an increased/decreased risk for various kinds of cancer, diabetes, heart conditions, and so forth
    • What genetic traits you have
      • These may range from “blue eyes” to “superathlete muscle type”
    • More specifically, pharmacogenomic information
      • For example, “fast caffeine metabolizer” or “clopidogrel (Plavix) non-responder” (i.e., that drug simply will not work for you)

    Wait, what’s the difference between health genomics and genetic testing?

    • Health genomics is the science of how our genes affect our health.
    • Genetic testing can be broadly defined as the means of finding out which genes we have.

    A quick snippet…

    More specifically, a lot of these services look at which single nucleotide polymorphisms (SNPs, pronounced “snips”) we have. While we share almost all of our DNA with each other (and indeed, with most vertebrates), our polymorphisms are the bits that differ, and are the bits that, genetically speaking, make us different.

    So, by looking just at the SNPs, it means we “only” need to look at about 3,000,000 DNA positions, and not our entire genome. For perspective, those 3,000,000 DNA positions make up about 0.1% of our whole genome, so without focusing on SNPs, the task would be 1000x harder.

    For example, the kind of information that this sort of testing may give you, includes (to look at some “popular” SNPs):

    • rs53576 in the oxytocin receptor influences social behavior and personality
    • rs7412 and rs429358 can raise the risk of Alzheimer’s disease by more than 10x
    • rs6152 can influence baldness
    • rs333 resistance to HIV
    • rs1800497 in a dopamine receptor may influence the sense of pleasure
    • rs1805007 determines red hair and sensitivity to anesthetics
    • rs9939609 triggers obesity and type-2 diabetes
    • rs662799 prevents weight gain from high fat diets
    • rs12255372 linked to type-2 diabetes and breast cancer
    • rs1799971 makes alcohol cravings stronger
    • rs17822931 determines earwax, sweating and body odor
    • rs1333049 coronary heart disease
    • rs1051730 and rs3750344 nicotine dependence
    • rs4988235 lactose intolerance

    (You can learn about these and more than 100,000 other SNPs at SNPedia.com)

    I don’t know what SNPs I have, and am disinclined to look them up one by one!

    The first step to knowing, is to get your DNA out of your body and into a genetic testing service. This is usually done by saliva or blood sample. This writer got hers done many years ago by 23andMe and was very happy with that service, but there are plenty of other options.

    Healthline did an independent review of the most popular companies, so you might like to check out:

    Healthline: Best DNA Testing Kits of 2023

    Those companies will give you some basic information, such as “6x higher breast cancer risk” or “3x lower age-related macular degeneration risk” etc.

    However, to really get bang-for-buck, what you want to do next is:

    1. Get your raw genetic data (the companies above should provide it); this will probably look like a big text file full of As, Cs, Gs, and Ts, but it make take another form.
    2. Upload it to Promethease. When this writer got hers done , the cost was $2; that price has now gone up to a whopping $12.
    3. You will then get a report that will cross-reference your data with everything known about SNPs, and give a supremely comprehensive, readable-to-the-human-eye, explanation of what it all means for you—from much more specific health risk prognostics, to more trivial things like whether you can roll your tongue or smell decomposed asparagus metabolites in urine.

    A note on privacy: anything you upload to Promethease will be anonymized, and/but in doing so, you consent to it going into the grand scientific open-source bank of “things we know about the human genome”, and thus contribute to the overall sample size of genetic data.

    In our opinion, it means you’re doing your bit for science, without personal risk. But your opinion may differ, and that’s your decision to make.

    Lastly, on the pros and cons of pharmacogenetic testing specifically:

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  • Feeding You Lies – by Vani Hari

    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.

    When it comes to advertising, we know that companies will often be as misleading as they can get away with. But just how misleading is it?

    Vani Hari, of “Food Babe” fame, is here to unravel it all.

    The book covers many areas of food and drink advertising and marketing, and gives particular attention to:

    • Sodas (with and without sugar), and how deleterious they are to the health—as well as not even helping people lose weight, but actively hindering
    • Nutritionally fortified foods, and what we may or may not actually get from them by the time the processing is done
    • Organic food, and what that may or may not mean

    She also covers a lot of what happens outside of supermarkets, way back in universities and corporate boardrooms. In short, who is crossing whose palms with silver for a seal of approval… And what that means for us as consumers.

    A strength of this book that sets it apart from many of its genre, by the way, is that while being deeply critical of certain institutions’ practices, it doesn‘t digress into tinfoil-hat pseudoscientific scaremongering, either. Here at 10almonds we love actual science, so that was good to see too.

    Bottom line: is you’d like to know “can they say that and get away with it if it’s not true?” and make decisions based on the actual nutritional value of things, this is a great book for you.

    Click here to check out “Feeding You Lies” on Amazon and make your shopping healthier!

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  • Managing Your Mortality

    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.

    When Planning Is a Matter of Life and Death

    Barring medical marvels as yet unrevealed, we are all going to die. We try to keep ourselves and our loved ones in good health, but it’s important to be prepared for the eventuality of death.

    While this is not a cheerful topic, considering these things in advance can help us manage a very difficult thing, when the time comes.

    We’ve put this under “Psychology Sunday” as it pertains to processing our own mortality, and managing our own experiences and the subsequent grief that our death may invoke in our loved ones.

    We’ll also be looking at some of the medical considerations around end-of-life care, though.

    Organizational considerations

    It’s generally considered good to make preparations in advance. Write (or update) a Will, tie up any loose ends, decide on funerary preferences, perhaps even make arrangements with pre-funding. Life insurance, something difficult to get at a good rate towards the likely end of one’s life, is better sorted out sooner rather than later, too.

    Beyond bureaucracy

    What’s important to you, to have done before you die? It could be a bucket list, or it could just be to finish writing that book. It could be to heal a family rift, or to tell someone how you feel.

    It could be more general, less concrete: perhaps to spend more time with your family, or to engage more with a spiritual practice that’s important to you.

    Perhaps you want to do what you can to offset the grief of those you’ll leave behind; to make sure there are happy memories, or to make any requests of how they might remember you.

    Lest this latter seem selfish: after a loved one dies, those who are left behind are often given to wonder: what would they have wanted? If you tell them now, they’ll know, and can be comforted and reassured by that.

    This could range from “bright colors at my funeral, please” to “you have my blessing to remarry if you want to” to “I will now tell you the secret recipe for my famous bouillabaisse, for you to pass down in turn”.

    End-of-life care

    Increasingly few people die at home.

    • Sometimes it will be a matter of fighting tooth-and-nail to beat a said-to-be-terminal illness, and thus expiring in hospital after a long battle.
    • Sometimes it will be a matter of gradually winding down in a nursing home, receiving medical support to the end.
    • Sometimes, on the other hand, people will prefer to return home, and do so.

    Whatever your preferences, planning for them in advance is sensible—especially as money may be a factor later.

    Not to go too much back to bureaucracy, but you might also want to consider a Living Will, to be enacted in the case that cognitive decline means you cannot advocate for yourself later.

    Laws vary from place to place, so you’ll want to discuss this with a lawyer, but to give an idea of the kinds of things to consider:

    National Institute on Aging: Preparing A Living Will

    Palliative care

    Palliative care is a subcategory of end-of-life care, and is what occurs when no further attempts are made to extend life, and instead, the only remaining goal is to reduce suffering.

    In the case of some diseases including cancer, this may mean coming off treatments that have unpleasant side-effects, and retaining—or commencing—pain-relief treatments that may, as a side-effect, shorten life.

    Euthanasia

    Legality of euthanasia varies from place to place, and in some times and places, palliative care itself has been considered a form of “passive euthanasia”, that is to say, not taking an active step to end life, but abstaining from a treatment that prolongs it.

    Clearer forms of passive euthanasia include stopping taking a medication without which one categorically will die, or turning off a life support machine.

    Active euthanasia, taking a positive action to end life, is legal in some places and the means varies, but an overdose of barbiturates is an example; one goes to sleep and does not wake up.

    It’s not the only method, though; options include benzodiazepines, and opioids, amongst others:

    Efficacy and safety of drugs used for assisted dying

    Unspoken euthanasia

    An important thing to be aware of (whatever your views on euthanasia) is the principle of double-effect… And how it comes to play in palliative care more often than most people think.

    Say a person is dying of cancer. They opt for palliative care; they desist in any further cancer treatments, and take medication for the pain. Morphine is common. Morphine also shortens life.

    It’s common for such a patient to have a degree of control over their own medication, however, after a certain point, they will no longer be in sufficient condition to do so.

    After this point, it is very common for caregivers (be they medical professionals or family members) to give more morphine—for the purpose of reducing suffering, of course, not to kill them.

    In practical terms, this often means that the patient will die quite promptly afterwards. This is one of the reasons why, after sometimes a long-drawn-out period of “this person is dying”, healthcare workers can be very accurate about “it’s going to be in the next couple of days”.

    The take-away from this section is: if you would like for this to not happen to you or your loved one, you need to be aware of this practice in advance, because while it’s not the kind of thing that tends to make its way into written hospital/hospice policies, it is very widespread and normalized in the industry on a human level.

    Further reading: Goods, causes and intentions: problems with applying the doctrine of double effect to palliative sedation

    One last thing…

    Planning around our own mortality is never a task that seems pressing, until it’s too late. We recommend doing it anyway, without putting it off, because we can never know what’s around the corner.

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  • Support For Long COVID & Chronic Fatigue

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    Long COVID and Chronic Fatigue

    Getting COVID-19 can be very physically draining, so it’s no surprise that getting Long COVID can (and usually does) result in chronic fatigue.

    But, what does this mean and what can we do about it?

    What makes Long COVID “long”

    Long COVID is generally defined as COVID-19 whose symptoms last longer than 28 days, but in reality the symptoms not only tend to last for much longer than that, but also, they can be quite distinct.

    Here’s a large (3,762 participants) study of Long COVID, which looked at 203 symptoms:

    Characterizing long COVID in an international cohort: 7 months of symptoms and their impact

    Three symptoms stood at out as most prevalent:

    1. Chronic fatigue (CFS)
    2. Cognitive dysfunction
    3. Post-exertional malaise (PEM)

    The latter means “the symptoms get worse following physical or mental exertion”.

    CFS, Chronic Fatigue Syndrome, is also called Myalgic Encephalomyelitis (ME).

    What can be done about it?

    The main “thing that people do about it” is to reduce their workload to what they can do, but this is not viable for everyone. Note that work doesn’t just mean “one’s profession”, but anything that requires physical or mental energy, including:

    • Childcare
    • Housework
    • Errand-running
    • Personal hygiene/maintenance

    For many, this means having to get someone else to do the things—either with support of family and friends, or by hiring help. For many who don’t have those safety nets available, this means things simply not getting done.

    That seems bleak; isn’t there anything more we can do?

    Doctors’ recommendations are chiefly “wait it out and hope for the best”, which is not encouraging. Some people do recover from Long COVID; for others, it so far appears it might be lifelong. We just don’t know yet.

    Doctors also recommend to journal, not for the usual mental health benefits, but because that is data collection. Patients who journal about their symptoms and then discuss those symptoms with their doctors, are contributing to the “big picture” of what Long COVID and its associated ME/CFS look like.

    You may notice that that’s not so much saying what doctors can do for you, so much as what you can do for doctors (and in the big picture, eventually help them help people, which might include you).

    So, is there any support for individuals with Long COVID ME/CFS?

    Medically, no. Not that we could find.

    However! Socially, there are grassroots support networks, that may be able to offer direct assistance, or at least point individuals to useful local resources.

    Grassroots initiatives include Long COVID SOS and the Patient-Led Research Collaborative.

    The patient-led organization Body Politic also used to have such a group, until it shut down due to lack of funding, but they do still have a good resource list:

    Click here to check out the Body Politic resource list (it has eight more specific resources)

    Stay strong!

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  • From immunotherapy to mRNA vaccines – the latest science on melanoma treatment explained

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    More than 16,000 Australians will be diagnosed with melanoma each year. Most of these will be caught early, and can be cured by surgery.

    However, for patients with advanced or metastatic melanoma, which has spread from the skin to other organs, the outlook was bleak until the advent of targeted therapies (that attack specific cancer traits) and immune therapies (that leverage the immune system). Over the past decade, these treatments have seen a significant climb in the number of advanced melanoma patients surviving for at least five years after diagnosis, from less than 10% in 2011 to around 50% in 2021.

    While this is great news, there are still many melanoma patients who cannot be treated effectively with current therapies. Researchers have developed two exciting new therapies that are being evaluated in clinical trials for advanced melanoma patients. Both involve the use of immunotherapy at different times and in different ways.

    The first results from these trials are now being shared publicly, offering insight into the future of melanoma treatment.

    Svitlana Hulko/Shutterstock

    Immunotherapy before surgery

    Immunotherapy works by boosting the power of a patient’s immune system to help kill cancer cells. One type of immunotherapy uses something called “immune checkpoint inhibitors”.

    Immune cells carry “immune checkpoint” proteins, which control their activity. Cancer cells can interact with these checkpoints to turn off immune cells and hide from the immune system. Immune checkpoint inhibitors block this interaction and help keep the immune system activated to fight the cancer.

    Results from an ongoing phase 3 trial using immune checkpoint inhibitors were recently published in the New England Journal of Medicine.

    This trial used two types of immune checkpoint inhibitors: nivolumab, which blocks an immune checkpoint called PD-1, and ipilimumab, which blocks CTLA-4.

    A woman's arm with a mole on it.
    More than 16,000 Australians are diagnosed with melanoma each year. Delovely Pics/Shutterstock

    Some 423 patients (including many from Australia) were enrolled in the trial, and participants were randomly assigned to one of two groups.

    The first group had surgery to remove their melanoma, and were then given immunotherapy (nivolumab) to help kill any remaining cancer cells. Giving a systemic (whole body) therapy such as immunotherapy after surgery is a standard way of treating melanoma. The second group received immunotherapy first (nivolumab plus ipilimumab) and then underwent surgery. This is a new approach to treating these cancers.

    Based on previous observations, the researchers had predicted that giving patients immunotherapy while the whole tumour was still present would activate the tumour-fighting abilities of the patient’s immune system much better than giving it once the tumour had been removed.

    Sure enough, 12 months after starting therapy, 83.7% of patients who received immunotherapy before surgery remained cancer-free, compared to 57.2% in the control group who received immunotherapy after surgery.

    Based on these results, Australian of the year Georgina Long – who co-led the trial with Christian Blank from The Netherlands Cancer Institute – has suggested this method of immunotherapy before surgery should be considered a new standard of treatment for higher risk stage 3 melanoma. She also said a similar strategy should be evaluated for other cancers.

    The promising results of this phase 3 trial suggest we might see this combination treatment being used in Australian hospitals within the next few years.

    mRNA vaccines

    Another emerging form of melanoma therapy is the post-surgery combination of a different checkpoint inhibitor (pembrolizumab, which blocks PD-1), with a messenger RNA vaccine (mRNA-4157).

    While checkpoint inhibitors like pembrolizumab have been around for more than a decade, mRNA vaccines like mRNA-4157 are a newer phenomenon. You might be familiar with mRNA vaccines though, as the biotechnology companies Pfizer-BioNTech and Moderna released COVID vaccines based on mRNA technology.

    mRNA-4157 works basically the same way – the mRNA is injected into the patient and produces antigens, which are small proteins that train the body’s immune system to attack a disease (in this case, cancer, and for COVID, the virus).

    However, mRNA-4157 is unique – literally. It’s a type of personalised medicine, where the mRNA is created specifically to match a patient’s cancer. First, the patient’s tumour is genetically sequenced to figure out what antigens will best help the immune system to recognise their cancer. Then a patient-specific version of mRNA-4157 is created that produces those antigens.

    The latest results of a three-year, phase 2 clinical trial which combined pembrolizumab and mRNA-4157 were announced this past week. Overall, 2.5 years after starting the trial, 74.8% of patients treated with immunotherapy combined with mRNA-4157 post-surgery remained cancer-free, compared to 55.6% of those treated with immunotherapy alone. These were patients who were suffering from high-risk, late-stage forms of melanoma, who generally have poor outcomes.

    It’s worth noting these results have not yet been published in peer-reviewed journals. They’re available as company announcements, and were also presented at some cancer conferences in the United States.

    Based on the results of this trial, the combination of pembrolizumab and the vaccine progressed to a phase 3 trial in 2023, with the first patients being enrolled in Australia. But the final results of this trial are not expected until 2029.

    It is hoped this mRNA-based anti-cancer vaccine will blaze a trail for vaccines targeting other types of cancer, not just melanoma, particularly in combination with checkpoint inhibitors to help stimulate the immune system.

    Despite these ongoing advances in melanoma treatment, the best way to fight cancer is still prevention which, in the case of melanoma, means protecting yourself from UV exposure wherever possible.

    Sarah Diepstraten, Senior Research Officer, Blood Cells and Blood Cancer Division, WEHI (Walter and Eliza Hall Institute of Medical Research) and John (Eddie) La Marca, Senior Research Officer, Blood Cells and Blood Cancer, WEHI (Walter and Eliza Hall Institute of Medical Research)

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

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