When should you get the updated COVID-19 vaccine?

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Updated COVID-19 vaccines are now available: They’re meant to give you the best protection against the strain of the virus that is making people severely sick and also causing deaths. 

Many people were infected during the persistent summer wave, which may leave you wondering when you should get the updated vaccine. The short answer is that it depends on when you last got infected or vaccinated and on your particular level of risk. 

We heard from six experts—including medical doctors and epidemiologists—about when they recommend getting an updated vaccine. Read on to learn what they said. And to make it easy, check out the flowchart below.

A flowchart that helps you answer the question of when to get the 2024-2025 updated COVID-19 vaccine based mainly on whether or not you were infected with COVID-19 or received a COVID-19 vaccine in the last three months. The chart also says that if you're over 65, immunocompromised, or high risk you should consider getting vaccinated as soon as possible.
A flowchart to help you decide when is the best time to get the 2024-2025 updated COVID-19 vaccine.

If I was infected with COVID-19 this summer, when should I get the updated vaccine?

All the experts we spoke to agreed that if you were infected this summer, you should wait at least three months since you were infected to get vaccinated. 

“Generally, an infection may be protective for about three months,” Dr. Ziyad Al-Aly, chief of research and development at the Veterans Affairs St. Louis Health Care System, tells PGN. “If they got infected three or more months ago, it is a good idea to get vaccinated sooner than later.”

This three-month rule applies if you got vaccinated over the summer, which may be the case for some immunocompromised people, adds Dr. Peter Chin-Hong, professor of medicine at the University of California, San Francisco. 

If I didn’t get infected with COVID-19 this summer, when should I get vaccinated?

Most of the experts we talked to say that if you didn’t get infected with COVID-19 this summer, you should get the vaccine as soon as possible. Dr. Peter Hotez, dean of the National School of Tropical Medicine at Baylor College of Medicine, emphasizes that if this applies to you, you should get vaccinated as soon as possible, especially given the current COVID-19 surge.

Al-Aly agrees. “Vaccine-derived immunity lasts for several months, and it should cover the winter season. Plus, the current vaccine is a KP.2-adapted vaccine, so it will work most optimally against KP.2 and related subvariants [such as] KP.3 that are circulating now,” Al-Aly says. “We don’t know when the virus will mutate to a variant that is not compatible with the KP.2 vaccine.” 

Al-Aly adds that if you’d rather take the protection you can get right now, “It may make more sense to get vaccinated sooner than later.”

This especially applies if you’re over 65 or immunocompromised and you haven’t received a COVID-19 vaccine in a year or more because, as Chin-Hong adds, “that is the group that is being hospitalized and disproportionately dying now.”

Some experts—including epidemiologist Katelyn Jetelina, author of newsletter Your Local Epidemiologist—also say that if you’re younger than 65 and not immunocompromised, you can consider waiting and aiming to get vaccinated before Halloween to get the best protection in the winter, when we’re likely to experience another wave because of the colder weather, gathering indoors, and the holidays. 

“I am more worried about the winter than the summer, so I would think of October (some time before Halloween) as the ‘Goldilocks moment’—not too early, not too late, but just right,” Chin-Hong adds. Time it “such that your antibodies peak during the winter when COVID-19 cases are expected to exceed what we are seeing this summer.”

My children are starting school—should I get them vaccinated now? 

According to most experts we spoke to, now is a good time to get your children vaccinated. 

Jennifer Nuzzo, professor of epidemiology and director of the Pandemic Center at the Brown University School of Public Health, adds that “with COVID-19 infection levels as high as they are and increased exposures in school,” now is a particularly good time to get an updated vaccine if people haven’t gotten COVID-19 recently. 

Additionally, respiratory viruses spike when kids are back in school, so “doing everything you can to reduce your child’s risk of infection can help protect families and communities,” says epidemiologist Jessica Malaty Rivera, science communications advisor at the de Beaumont Foundation.

For more information, talk to your health care provider.

(Disclosure: The de Beaumont Foundation is a partner of The Public Good Projects, the organization that owns Public Good News.)

This article first appeared on Public Good News and is republished here under a Creative Commons license.

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  • Peaches vs Plums – Which is Healthier?

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    Our Verdict

    When comparing peaches to plums, we picked the peaches.

    Why?

    Both are great! But there is a clear winner out of these two botanically-similar fruits:

    In terms of macronutrients they are very similar. Peaches have slightly more protein and plums have slightly more carbs, but the numbers are close enough to make no meaningful difference; they’re both mostly water.

    They’re also not too far from each other in the category of vitamins; peaches have more of vitamins B2, B3, B5, E, and choline, while plums have more of vitamins B1, B6, B9, C, and K. They’re equal on vitamin A, by the way, and the vitamins they do differ in, differ by around the same margins, so this category is a clear tie.

    When it comes to minerals, however, peaches win easily with more copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc. The two fruits are equal on calcium, and plum is not higher in any minerals.

    While they already won easily because of the mineral situation, it should be noted that peaches also have the lower glycemic index. But honestly, plums are fine too; peaches are just even lower.

    So: enjoy both, but if you’re going to pick one, peaches boast the most!

    Want to learn more?

    You might like to read:

    Take care!

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  • What Are Nootropics, Really?

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    What are nootropics, really?

    A nootropic is anything that functions as a cognitive enhancerin other words, improves our brainpower.

    These can be sensationalized as “smart drugs”, misrepresented excitingly in science fiction, meme-ified in the mundane (“but first, coffee”), and reframed entirely, (“exercise is the best nootropic”).

    So, clearly, “nootropics” can mean a lot of different things. Let’s look at some of the main categories…

    The neurochemical modulators

    These are what often get called “smart drugs”. They are literally drugs (have a chemical effect on the body that isn’t found in our diet), and they affect the levels of certain neurotransmitters in the brain, such as by:

    • Adding more of that neurotransmitter (simple enough)
    • Decreasing the rate at which we lose that neurotransmitter (re-uptake inhibitors)
    • Antagonizing an unhelpful neurotransmitter (doing the opposite thing to it)
    • Blocking an unhelpful neurotransmitter (stopping the receptors from receiving it)

    “Unhelpful” here is relative and subjective, of course. We need all the neurotransmitters that are in our brain, after all, we just don’t need all of them all the time.

    Examples: modafinil, a dopamine re-uptake inhibitor (mostly prescribed for sleep disorders), reduces the rate at which our brains scrub dopamine, resulting in a gradual build-up of dopamine that we naturally produced, so we get to enjoy that dopamine for longer. This will tend to promote wakefulness, and may also help with problem-solving and language faculties—as well as giving a mood boost. In other words, all things that dopamine is used for. Mirtazaрine, an adrenoreceptor agonist (mostly prescribed as an antidepressant), increases noradrenergic neurotransmission, thus giving many other brain functions a boost.

    Why it works: our brains need healthy levels of neurotransmitters, in order to function well. Those levels are normally self-regulating, but can become depleted in times of stress or fatigue, for example.

    The metabolic brain boosters

    These are the kind of things that get included in nootropic stacks (stack = a collection of supplements and/or drugs that complement each other and are taken together—for example, a multivitamin tablet could be described as a vitamin stack) even though they have nothing specifically relating them to brain function. Why are they included?

    The brain needs so much fuel. Metabolically speaking, it’s a gas-guzzler. It’s the single most resource-intensive organ of our body, by far. So, metabolic brain boosters tend to:

    • Increase blood flow
    • Increase blood oxygenation
    • Increase blood general health
    • Improve blood pressure (this is relative and subjective, since very obviously there’s a sweet spot)

    Examples: B-vitamins. Yep, it can be that simple. A less obvious example might be Co-enzyme Q10, which supports energy production on a cellular level, and good cardiovascular health.

    Why it works: you can’t have a healthy brain without a healthy heart!

    We are such stuff as brains are made of

    Our brains are made of mostly fat, water, and protein. But, not just any old fat and protein—we’re at least a little bit special! So, brain-food foods tend to:

    • Give the brain the fats and proteins it’s made of
    • Give the brain the stuff to make the fats and proteins it’s made of (simpler fats, and amino acids)
    • Give the brain hydration! Just having water, and electrolytes as appropriate, does this

    Examples: healthy fats from nuts, seeds, and seafood; also, a lot of phytonutrients from greens and certain fruits. Long-time subscribers may remember our article “Brain Food: The Eyes Have It!” on the importance of dietary lutein in reducing Alzheimer’s risk, for example

    Why it works: this is matter of structural upkeep and maintenance—our brains don’t work fabulously if deprived of the very stuff they’re made of! Especially hydration is seriously underrated as a nootropic factor, by the way. Most people are dehydrated most of the time, and the brain dehydrates quickly. Fortunately, it rehydrates quickly as well when we take hydrating liquids.

    Weird things that sound like ingredients in a witch’s potion

    These are too numerous and too varied in how they work to cover here, but they do appear a lot in nootropic stacks and in popular literature on the subject.

    Often they work by one of the mechanisms described above; sometimes we’re not entirely sure how they work, and have only measured their effects sufficiently to know that, somehow, they do work.

    Examples: panax ginseng is one of the best-studied examples that still remains quite mysterious in many aspects of its mechanism. Lion’s Mane (the mushroom, not the jellyfish or the big cat hairstyle), meanwhile, is known to contain specific compounds that stimulate healthy brain cell growth.

    Why it works: as we say, it varies so much from on ingredient to another in this category, so… Watch out for our Research Review Monday features, as we’ll be covering some of these in the coming weeks!

    (PS, if there’s any you’d like us to focus on, let us know! We always love to hear from you. You can hit reply to any of our emails, or use the handy feedback widget at the bottom)

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  • How To *Really* Pick Up (And Keep!) Those Habits

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    The Healthiest Habit-Building

    Why was that book “Atomic Habits” called that? It wasn’t just because it’s a catchy title…

    Habits are—much like atoms—things that are almost imperceptibly small, yet when stacked, they make up the substance of many much larger and more obvious things, and also contain an immense amount of potential power.

    About that power…

    Habits are the “compound interest” of natural human life. Every action we take, every decision we make, makes our life (often imperceptibly) better or worse. But getting even just 1% better or 1% worse at something every day? That’s going to not just add up over time… It’ll actively compound over time.

    Habits will snowball one way or the other, good or bad. So, we want to control that snowball so that it works for us rather than against us.

    Thus, we need to choose habits that are helpful to us, rather than those that are harmful to us. Top examples include:

    • Making healthy food choices rather than unhealthy ones
    • Moving our body regularly rather than being sedentary
    • Having a good bedtime/morning routine rather than a daily chaotic blur
    • Learning constantly rather than digging into old beliefs out of habit
    • Forging healthy relationships rather than isolating ourselves

    We all know that to make a habit stick, we need to practice it regularly, with opinions varying on how long it takes for something to become habit. Some say 21 days; some say 66. The number isn’t the important part!

    What is important

    You will never get to day 66, much less will you get to day 366, if you don’t first get to day 6 (New Year’s Resolutions, anyone?).

    So in the early days especially, when the habit is most likely to get dropped, it’s critical to make the habit as easy as possible to form.

    That means:

    • The habit should be made as pleasant as possible
      • (e.g. by making modifications to it if it’s not already intrinsically pleasant)
    • The habit should take under 2 minutes to do at first
      • (no matter if it takes longer than 2 minutes to be useful; it’ll never be useful if you don’t first get it to stick, so make your initial commitment only 2 minutes, just to get in the habit)
    • The habit should have cues to remind you
      • (as it’s not habit yet, you will need to either set a reminder on your phone, or leave a visual reminder, such as your workout clothes laid out ready for you in the morning, or a bowl of fruit in plain view where you spend a lot of time)

    What gets measured, gets done

    Streaks are a great way to do this. Habit-tracking apps help. Marks on a calendar or in a journal are also totally fine.

    What can help especially, and that a lot of people don’t do, is to have a system of regular personal reviews—like a work “performance review”, but for oneself and one’s own life.

    Set a reminder or write on the calendar / in your diary, to review monthly, or weekly if you prefer, such things as:

    • How am I doing in the areas of life that are important to me?
      • Have a list of the areas of life that are important to you, by the way, and genuinely reflect on each of them, e.g:
        • Health
        • Finances
        • Relationships
        • Learning
        • Sleep
        • Etc
    • What is working for me, and what isn’t working for me?
    • What will I do better in this next month/week?

    …and then do it!

    Good luck, and may it all stack up in your favor!

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  • The Wim Hof Method – by Wim Hof

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    In Wednesday’s main feature, we wrote about the Wim Hof Method, and/but only scratched the surface. Such is the downside of being a super-condensed newsletter! However, it does give us the opportunity to feature the book:

    The Wim Hof Method is definitely loudly trumpeted as “up there” with Atomic Habits or How Not To Die in the category of “life-changing” books. Why?

    Firstly, it’s a very motivational book. Hof is a big proponent of the notion “if you think you can or you think you can’t, you’re right” idea, practises what he preaches, and makes clear he’s not special.

    Secondly, it’s backed up with science. While it’s not a science-heavy book and that’s not the main focus, there are references to studies. Where physiological explanations are given for how certain things work, those explanations are sound. There’s no pseudoscience here, which is especially important for a book of this genre!

    What does the book have that our article didn’t? A good few things:

    • More about Hof’s own background and where it’s taken him. This is generally not a reason people buy books (unless they are biographies), but it’s interesting nonetheless.
    • A lot more advice, data, and information about Cold Therapy and how it can (and, he argues convincingly, should) be built into your life.
    • A lot about breathing exercises that we just didn’t cover at all in our article, but is actually an important part of the Wim Hof Method.
    • More about stepping through the psychological barriers that can hold us back.

    Bottom line: this book offers benefits that stretch into many areas of life, from some simple habits that can be built.

    Pick up your copy of The Wim Hof Method from Amazon today!

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  • The Plant-Based Diet Revolution – by Dr. Alan Desomond

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    Is this just another gut-healthy cooking guide? Not entirely…

    For a start, it’s not just about giving you a healthy gut; it also covers a healthy heart and a healthy brain. There’s lots of science in here!

    It’s also aimed as a transitional guide to eating more plants and fewer animal products, if you so choose. And if you don’t so choose, at least having the flexibility to cook both ways.

    The recipes themselves (organized into basics, breakfasts, lunches, mains, desserts) are clear and easy while also being calculated to please readers (and their families) who are used to eating more meat. There are, for instance, plenty of healthy proteins, healthy fats, and comfort foods.

    The “28 days” of the title refers to a meal plan using the recipes from the book; it’s not a big feature of the book though, so use it or don’t, but the cooking advice itself is more than worth the price of the book and the recipes are certainly great.

    Bottom line: if you’re thinking of taking a “Meatless Mondays” approach to making your diet healthier, this book can help you do that in style!

    Click here to check out The Plant-Based Diet Revolution, and upgrade your culinary repertoire!

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  • If you’re worried about inflammation, stop stressing about seed oils and focus on the basics

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    You’ve probably seen recent claims online seed oils are “toxic” and cause inflammation, cancer, diabetes and heart disease. But what does the research say?

    Overall, if you’re worried about inflammation, cancer, diabetes and heart disease there are probably more important things to worry about than seed oils.

    They may or may not play a role in inflammation (the research picture is mixed). What we do know, however, is that a high-quality diet rich in unprocessed whole foods (fruits, vegetables, nuts, seeds, grains and lean meats) is the number one thing you can to do reduce inflammation and your risk of developing diseases.

    Rather than focusing on seed oils specifically, reduce your intake of processed foods more broadly and focus on eating fresh foods. So don’t stress out too much about using a bit of seed oils in your cooking if you are generally focused on all the right things.

    What are seed oils?

    Seed oils are made from whole seeds, such as sunflower seeds, flax seeds, chia seeds and sesame seeds. These seeds are processed to extract oil.

    The most common seed oils found at grocery stores include sesame oil, canola oil, sunflower oil, flaxseed oil, corn oil, grapeseed oil and soybean oil.

    Seed oils are generally affordable, easy to find and suitable for many dishes and cuisines as they often have a high smoke point.

    However, most people consume seed oils in larger amounts through processed foods such as biscuits, cakes, chips, muesli bars, muffins, dipping sauces, deep-fried foods, salad dressings and margarines.

    These processed foods are “discretionary”, meaning they’re OK to have occasionally. But they are not considered necessary for a healthy diet, nor recommended in our national dietary guidelines, the Australian Guide for Healthy Eating.

    A person holds some sunflower oil while standing in a supermarket.
    Seed oils often have a high smoke point.
    Gleb Usovich/Shutterstock

    I’ve heard people say seed oils ‘promote inflammation’. Is that true?

    There are two essential types of omega fatty acids: omega-3 and omega-6. These are crucial for bodily functions, and we must get them through our diet since our bodies cannot produce them.

    While all oils contain varying levels of fatty acids, some argue an excessive intake of a specific omega-6 fatty acid in seed oils called “linoleic acid” may contribute to inflammation in the body.

    There is some evidence linoleic acid can be converted to arachidonic acid in the body and this may play a role in inflammation. However, other research doesn’t support the idea reducing dietary linoleic acid affects the amount of arachidonic acid in your body. The research picture is not clear cut.

    But if you’re keen to reduce inflammation, the best thing you can do is aim for a healthy diet that is:

    • high in antioxidants (found in fruits and vegetables)
    • high in “healthy”, unsaturated fatty acids (found in fatty fish, some nuts and olive oil, for example)
    • high in fibre (found in carrots, cauliflower, broccoli and leafy greens) and prebiotics (found in onions, leeks, asparagus, garlic and legumes)

    • low in processed foods.

    If reducing inflammation is your goal, it’s probably more meaningful to focus on these basics than on occasional use of seed oils.

    A bowl containing bright, fresh vegetables, chicken and chickpeas sits on a table.
    Choose foods high in fibre (like many vegetables) and prebiotics (like legumes).
    Kiian Oksana/Shutterstock

    What about seed oils and heart disease, cancer or diabetes risk?

    Some popular arguments against seed oils come from data from single studies on this topic. Often these are observational studies where researchers do not make changes to people’s diet or lifestyle.

    To get a clearer picture, we should look at meta-analyses, where scientists combine all the data available on a topic. This helps us get a better overall view of what’s going on.

    A 2022 meta-analysis of randomised controlled trials investigated the relationship between supplementation with omega-6 fatty acid (often found in seed oils) and cardiovascular disease risk (meaning disease relating to the heart and blood vessels).

    The researchers found omega-6 intake did not affect the risk for cardiovascular disease or death but that further research is needed for firm conclusions. Similar findings were observed in a 2019 review on this topic.

    The World Health Organization published a review and meta-analysis in 2022 of observational studies (considered lower quality evidence compared to randomised controlled trials) on this topic.

    They looked at omega-6 intake and risk of death, cardiovascular disease, breast cancer, mental health conditions and type 2 diabetes. The findings show both advantages and disadvantages of consuming omega-6.

    The findings reported that, overall, higher intakes of omega-6 were associated with a 9% reduced risk of dying (data from nine studies) but a 31% increased risk of postmenopausal breast cancer (data from six studies).

    One of the key findings from this review was about the ratio of omega-3 fatty acids to omega-6 fatty acids. A higher omega 6:3 ratio was associated with a greater risk of cognitive decline and ulcerative colitis (an inflammatory bowel condition).

    A higher omega 3:6 ratio was linked to a 26% reduced risk of depression. These mixed outcomes may be a cause of confusion among health-conscious consumers about the health impact of seed oils.

    Overall, the evidence suggests that a high intake of omega-6 fatty acids from seed oils is unlikely to increase your risk of death and disease.

    However, more high-quality intervention research is needed.

    The importance of increasing your omega-3 fatty acids

    On top of the mixed outcomes, there is clear evidence increasing the intake of omega-3 fatty acids (often found in foods such as fatty fish and walnuts) is beneficial for health.

    While some seed oils contain small amounts of omega-3s, they are not typically considered rich sources.

    Flaxseed oil is an exception and is one of the few seed oils that is notably high in alpha-linolenic acid (sometimes shortened to ALA), an omega-3 fatty acid.

    If you are looking to increase your omega-3 intake, it’s better to focus on other sources such as fatty fish (salmon, mackerel, sardines), chia seeds, hemp seeds, walnuts, and algae-based supplements. These foods are known for their higher omega-3 content compared to seed oils.

    The bottom line

    At the end of the day, it’s probably OK to include small quantities of seed oils in your diet, as long as you are mostly focused on eating fresh, unprocessed foods.

    The best way to reduce your risk of inflammation, heart disease, cancer or diabetes is not to focus so much on seed oils but rather on doing your best to follow the Australian Guide for Healthy Eating. The Conversation

    Lauren Ball, Professor of Community Health and Wellbeing, The University of Queensland and Emily Burch, Lecturer, Southern Cross University

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

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