The Many Health Benefits Of Garlic

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The Many Health Benefits of Garlic

We’re quite confident you already know what garlic is, so we’re going to leap straight in there with some science today:

First, let’s talk about allicin

Allicin is a compound in garlic that gives most of its health benefits. A downside of allicin is that it’s not very stable, so what this means is:

  • Garlic is best fresh—allicin breaks down soon after garlic is cut/crushed
    • So while doing the paperwork isn’t fun, buying it as bulbs is better than buying it as granules or similar
  • Allicin also breaks down somewhat in cooking, so raw garlic is best
    • Our philosophy is: still use it in cooking as well; just use more!
  • Supplements (capsule form etc) use typically use extracts and potency varies (from not great to actually very good)

Read more about that:

Now, let’s talk benefits…

Benefits to heart health

Garlic has been found to be as effective as the drug Atenolol at reducing blood pressure:

Effects of Allium sativum (garlic) on systolic and diastolic blood pressure in patients with essential hypertension

It also lowers LDL (bad cholesterol):

Lipid-lowering effects of time-released garlic powder tablets in double-blinded placebo-controlled randomized study

Benefits to the gut

We weren’t even looking for this, but as it turns out, as an add-on to the heart benefits…

Garlic lowers blood pressure in hypertensive subjects, improves arterial stiffness and gut microbiota: A review and meta-analysis

Benefits to the immune system

Whether against the common cold or bringing out the heavy guns, garlic is a booster:

Benefits to the youthfulness of body and brain

Garlic is high in antioxidants that, by virtue of reducing oxidative stress, help slow aging. This effect, combined with the cholesterol and blood pressure benefits, means it may also reduce the risk of Alzheimer’s and other forms of dementia:

There are more benefits too…

That’s all we have time to dive into study-wise today, but for the visually-inclined, here are yet more benefits to garlic (at a rate of 3–4 cloves per day):

An incredible awesome recipe using lots of garlic:

  • Take small potatoes (still in their skins), cut in half
  • Add enough peeled cloves of garlic so that you have perhaps a 1:10 ratio of garlic to potato by mass
  • Boil (pressure-cooking is ideal) until soft, and drain
  • Keeping them in the pan, add a lashing of olive oil, and any additional seasonings per your preference (consider black pepper, rosemary, thyme, parsley)
  • Put a lid on the pan, and holding it closed, shake the pan vigorously
    • Note: if you didn’t leave the skins on, or you chopped much larger potatoes smaller instead of cutting in half, the potatoes will break up into a rough mash now. This is actually also fine and still tastes (and honestly, looks) great, but it is different, so just be aware, so that you get the outcome you want.
  • The garlic, which—unlike the potatoes—didn’t have a skin to hold it together, will now have melted over the potatoes like butter

You can serve like this (it’s delicious already) or finish up in the oven or air-fryer or under the grill, if you prefer a roasted style dish (an amazing option too).

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  • Early Bird Or Night Owl? Genes vs Environment

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    A Sliding Slope?

    In Tuesday’s newsletter, we asked you how much control you believe we have over our sleep schedule, and got the above-depicted, below-described, set of responses:

    • 45% said “most people can control it; some people with sleep disorders cannot
    • 35% said “our genes predispose us to early/late, but we can slide it a bit
    • 15% said: “going against our hardwired sleep schedules is a road to ruin”
    • 5% said “anyone can adjust their sleep schedule with enough willpower”

    You may be wondering: what’s with those single-digit numbers in the graph there? And the answer is: Tuesday’s email didn’t go out at the usual time due to a scheduling mistake (sorry!), which is probably what affected the number of responses (poll response levels vary, but are usually a lot higher than this).

    Note: yes, this does mean most people who read our newsletter don’t vote. So, not to sound like a politician on the campaign trail, but… Your vote counts! We always love reading your comments when you add those, too—often they provide context that allow us to tailor what we focus on in our articles

    However, those are the responses we got, so here we are!

    What does the science say?

    Anyone can adjust their sleep with enough willpower: True or False?

    False, simply. It’s difficult for most people, but for many people with sleep disorders, it is outright impossible.

    In a battle of narcolepsy vs willpower, for example, no amount of willpower will stop the brain from switching to sleep mode when it thinks it’s time to sleep:

    ❝Narcolepsy is the most common neurological cause of chronic sleepiness. The discovery about 20 years ago that narcolepsy is caused by selective loss of the neurons producing orexins sparked great advances in the field

    [There is also] developing evidence that narcolepsy is an autoimmune disorder that may be caused by a T cell-mediated attack on the orexin neurons and explain how these new perspectives can inform better therapeutic approaches.❞

    ~ Dr. Carrie Mahoney et al. (lightly edited for brevity)

    Source: The neurobiological basis of narcolepsy

    For further reading, especially if this applies to you or a loved one:

    Living with Narcolepsy: Current Management Strategies, Future Prospects, and Overlooked Real-Life Concerns

    Our genes predispose us to early/late, but we can slide it a bit: True or False?

    True! First, about our genes predisposing us:

    Genome-wide association analysis of 89,283 individuals identifies genetic variants associated with self-reporting of being a morning person

    …and also:

    Gene distinguishes early birds from night owls and helps predict time of death

    Now, as for the “can slide it a bit”, this is really just a function of the general categories of “early bird” and “night owl” spanning periods of time that allow for a few hours’ wiggle-room at either side.

    However, it is recommended to make any actual changes more gradually, with the Sleep Foundation going so far as to recommend 30 minutes, or even just 15 minutes, of change per day:

    Sleep Foundation | How to Fix Your Sleep Schedule

    Going against our hardwired sleep schedule is a road to ruin: True or False?

    False, contextually. By this we mean: our “hardwired” sleep schedule is (for most of us), genetically predisposed but not predetermined.

    Also, genetic predispositions are not necessarily always good for us; one would not argue, for example, for avoiding going against a genetic predisposition to addiction.

    Some genetic predispositions are just plain bad for us, and genes can be a bit of a lottery.

    That said, we do recommend getting some insider knowledge (literally), by getting personal genomics tests done, if that’s a viable option for you, so you know what’s really a genetic trait (and what to do with that information) and what’s probably caused by something else (and what to do with that information):

    Genetic Testing: Health Benefits & Methods

    Take care!

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  • How To Reduce Cortisol Levels Naturally

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    Cortisol is a hormone that is important for us (we’d struggle to get up in the morning without it, for a start), but in this modern world we often have too much of it, too much of the time. How can we rebalance it? Dr. Mindy Pelz explains:

    Lifestyle adjustments

    A note in advance: the video makes frequent reference to things that “spike cortisol levels”, but this is probably intended as a stand-in for “raise cortisol levels”. Because, unlike for some things, in the case of cortisol, spikes aren’t usually a problem (indeed, they can be beneficial, and this is a large part of why cold showers and ice baths can be healthy; it’s an artificially induced cortisol spike, and this hormesis has an assortment of healthy benefits, each related to improving our body’s ability to switch quickly between states as appropriate); rather, it’s chronically high cortisol levels that are the problem. However, the video discusses things that can increase resting cortisol levels, so where she says “spike”, we suggest to read “raise”.

    Dr. Pelz, an advocate of intermittent fasting, mentions that done incorrectly and/or for the same way for too long, fasting can raise cortisol levels and thus sabotage our efforts—so varying our fasting style can help avoid that. For example, 16:8, 5:2, longer fasts less frequently, etc.

    On the topic of food, she also warns us of the dangers of ultra-processed food, harmful oils, and foods with added sugar, as these can all raise cortisol levels.

    When it comes to exercise, she notes that intense exercise without adequate recovery can raise cortisol levels, so again it’s good to mix up one’s methods, vary one’s exercise routine, and allow each well-worked muscle-group adequate rest afterwards.

    Dr. Pelz also talks mindset, and has her own interesting way of framing the well-established science that chronic stress means chronically high stress hormone (cortisol) levels; Dr. Pelz prefers to see it as negative vs positive thoughts, environments, etc.

    Any discussion of cortisol management would be incomplete without discussing the importance of good quality sleep. Dr. Pelz doesn’t mention this at all in her video, but it’s important to bear in mind too!

    Click Here If The Embedded Video Doesn’t Load Automatically!

    Want to learn more?

    You might also like to read:

    Lower Your Cortisol! (Here’s Why & How)

    Take care!

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  • I’m iron deficient. Which supplements will work best for me and how should I take them?

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    Iron deficiency is common and can be debilitating. It mainly affects women. One in three premenopausal women are low in iron compared to just 5% of Australian men. Iron deficiency particularly affects teenage girls, women who do a lot of exercise and those who are pregnant.

    The body needs iron to make new red blood cells, and to support energy production, the immune system and cognitive function. If you’re low, you may experience a range of symptoms including fatigue, weakness, shortness of breath, headache, irregular heartbeat and reduced concentration.

    If a blood test shows you’re iron deficient, your doctor may recommend you start taking an oral iron supplement. But should you take a tablet or a liquid? With food or not? And when is the best time of day?

    Here are some tips to help you work out how, when and what iron supplement to take.

    LittlePigPower/Shutterstock

    How do I pick the right iron supplement?

    The iron in your body is called “elemental iron”. Choosing the right oral supplement and dose will depend on how much elemental iron it has – your doctor will advise exactly how much you need.

    The sweet spot is between 60-120 mg of elemental iron. Any less and the supplement won’t be effective in topping up your iron levels. Any higher and you risk gastrointestinal symptoms such as diarrhoea, cramping and stomach pain.

    Three pregnant bellies during a stretching class.
    Low iron can especially affect people during pregnancy and women who do a lot of sport. Kamil Macniak/Shutterstock

    In Australia, iron salts are the most common oral supplements because they are cheap, effective and come in different delivery methods (tablets, capsules, liquid formulas). The iron salts you are most likely to find in your local chemist are ferrous sulfate (~20% elemental iron), ferrous gluconate (~12%) and ferrous fumarate (~33%).

    These formulations all work similarly, so your choice should come down to dose and cost.

    Many multivitamins may look like an iron supplement, but it’s important to note they usually have too little iron – usually less than 20 mg – to correct an iron deficiency.

    Should I take tablets or liquid formulas?

    Iron contained within a tablet is just as well absorbed as iron found in a liquid supplement. Choosing the right one usually comes down to personal preference.

    The main difference is that liquid formulas tend to contain less iron than tablets. That means you might need to take more of the product to get the right dose, so using a liquid supplement could work out to be more expensive in the long term.

    What should I eat with my iron supplement?

    Research has shown you will absorb more of the iron in your supplement if you take it on an empty stomach. But this can cause more gastrointestinal issues, so might not be practical for everyone.

    If you do take your supplement with meals, it’s important to think about what types of food will boost – rather than limit – iron absorption. For example, taking the supplement alongside vitamin C improves your body’s ability to absorb it.

    Some supplements already contain vitamin C. Otherwise you could take the supplement along with a glass of orange juice, or other vitamin C-rich foods.

    A woman pours orange juice into a glass next to a bowl of strawberries and kiwifruit.
    Taking your supplement alongside foods rich in vitamin C, like orange juice or kiwifruit, can help your body absorb the iron. Anete Lusina/Pexels

    On the other hand, tea, coffee and calcium all decrease the body’s ability to absorb iron. So you should try to limit these close to the time you take your supplement.

    Should I take my supplement in the morning or evening?

    The best time of day to take your supplement is in the morning. The body can absorb significantly more iron earlier in the day, when concentrations of hepcidin (the main hormone that regulates iron) are at their lowest.

    Exercise also affects the hormone that regulates iron. That means taking your iron supplement after exercising can limit your ability to absorb it. Taking your supplement in the hours following exercise will mean significantly poorer absorption, especially if you take it between two and five hours after you stop.

    Our research has shown if you exercise every day, the best time to take your supplement is in the morning before training, or immediately after (within 30 minutes).

    My supplements are upsetting my stomach. What should I do?

    If you experience gastrointestinal side effects such as diarrhoea or cramps when you take iron supplements, you may want to consider taking your supplement every second day, rather than daily.

    Taking a supplement every day is still the fastest way to restore your iron levels. But a recent study has shown taking the same total dose can be just as effective when it’s taken on alternate days. For example, taking a supplement every day for three months works as well as every second day for six months. This results in fewer side effects.

    Oral iron supplements can be a cheap and easy way to correct an iron deficiency. But ensuring you are taking the right product, under the right conditions, is crucial for their success.

    It’s also important to check your iron levels prior to commencing iron supplementation and do so only under medical advice. In large amounts, iron can be toxic, so you don’t want to be consuming additional iron if your body doesn’t need it.

    If you think you may be low on iron, talk to your GP to find out your best options.

    Alannah McKay, Postdoctoral Research Fellow, Sports Nutrition, Australian Catholic University

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

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  • Pistachios vs Pecans – Which is Healthier?

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    Our Verdict

    When comparing pistachios to pecans, we picked the pistachios.

    Why?

    Firstly, the macronutrients: pistachios have twice as much protein and fiber. Pecans have more fat, though in both of these nuts the fats are healthy.

    The category of vitamins is an easy win for pistachios, with a lot more of vitamins A, B1, B2, B3, B6, B9, C, and E. Especially the 8x vitamin A, 7x vitamin B6, 4x vitamin C, and 2x vitamin E, and as the percentages are good too, these aren’t small differences. Pecans, meanwhile, boast only a little more vitamin B5 (pantothenic acid, the one whose name means “it’s everywhere”, because that’s how easy it is to get it).

    In terms of minerals, pistachios have more calcium, iron, phosphorus, potassium, and selenium, while pecans have more manganese and zinc. So, a fair win for pistachios on this one.

    Adding up the three different kinds of win for pistachios means that *drumroll* pistachios win overall, and it’s not close.

    As ever, do enjoy both though, because diversity is healthy!

    Want to learn more?

    You might like to read:

    Take care!

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  • What Most People Don’t Know About HIV

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    What To Know About HIV This World AIDS Day

    Yesterday, we asked 10almonds readers to engage in a hypothetical thought experiment with us, and putting aside for a moment any reason you might feel the scenario wouldn’t apply for you, asked:

    ❝You have unprotected sex with someone who, afterwards, conversationally mentions their HIV+ status. Do you…❞

    …and got the above-depicted, below-described, set of responses. Of those who responded…

    • Just over 60% said “rush to hospital; maybe a treatment is available”
    • Just under 20% said “ask them what meds they’re taking (and perhaps whether they’d like a snack)”
    • Just over 10% said “despair; life is over”
    • Two people said “do the most rigorous washing down there you’ve ever done in your life”

    So, what does science say about it?

    First, a quick note on terms

    • HIV is the Human Immunodeficiency Virus. It does what it says on the tin; it gives humans immunodeficiency. Like many viruses that have become epidemic in humans, it started off in animals (called SIV, because there was no “H” involved yet), which were then eaten by humans, passing the virus to us when it one day mutated to allow that.
      • It’s technically two viruses, but that’s beyond the scope of today’s article; for our purposes they are the same. HIV-1 is more virulent and infectious than HIV-2, and is the kind more commonly found in most of the world.
    • AIDS is Acquired Immunodeficiency Syndrome, and again, is what it sounds like. When a person is infected with HIV, then without treatment, they will often develop AIDS.
      • Technically AIDS itself doesn’t kill people; it just renders people near-defenseless to opportunistic infections (and immune-related diseases such as cancer), since one no longer has a properly working immune system. Common causes of death in AIDS patients include cancer, influenza, pneumonia, and tuberculosis.

    People who contract HIV will usually develop AIDS if untreated. Untreated life expectancy is about 11 years.

    HIV/AIDS are only a problem for gay people: True or False?

    False, unequivocally. Anyone can get HIV and develop AIDS.

    The reason it’s more associated with gay men, aside from homophobia, is that since penetrative sex is more likely to pass it on, then if we go with the statistically most likely arrangements here:

    • If a man penetrates a woman and passes on HIV, that woman will probably not go on to penetrate someone else
    • If a man penetrates a man and passes on HIV, that man could go on to penetrate someone else—and so on
    • This means that without any difference in safety practices or promiscuity, it’s going to spread more between men on average, by simple mathematics.
    • This is why “men who have sex with men” is the generally-designated higher-risk category.

    There is medication to cure HIV/AIDS: True or False?

    False so far (though there have been individual case studies of gene treatments that may have cured people—time will tell).

    But! There are medications that can prevent HIV from being a life-threatening problem:

    • PrEP (Pre-Exposure Prophylaxis) is a medication that one can take in advance of potential exposure to HIV, to guard against it.
      • This is a common choice for people aren’t sure about their partners’ statuses, or people working in risky environments.
    • PEP (Post-Exposure Prophylaxis) is a medication that one can take after potential exposure to HIV, to “nip it in the bud”.
      • Those of you who were rushing to hospital in our poll, this is what you’re rushing there for.
    • ARVs (Anti-RetroVirals) are a class of medications (there are different options; we don’t have room to distinguish them) that reduce an HIV+ person’s viral load to undetectable levels.
      • Those of you who were asking what meds your partner was taking, these will be those meds. Also, most of them are to be taken in the morning with food, so that’s what the snack was for.

    If someone is HIV+, the risk of transmission in unprotected sex is high: True or False?

    True or False, with false being the far more likely. It depends on their medications, and this is why you were asking. If someone is on ARVs and their viral load is undetectable (as is usual once someone has been on ARVs for 6 months), they cannot transmit HIV to you.

    U=U is not a fancy new emoticon, it means “undetectable = untransmittable”, which is a mathematically true statement in the case of HIV viral loads.

    See: NIH | HIV Undetectable=Untransmittable (U=U)

    If you’re thinking “still sounds risky to me”, then consider this:

    You are safer having unprotected sex with someone who is HIV+ and on ARVs with an undetectable viral load, than you are with someone you are merely assuming is HIV- (perhaps you assume it because “surely this polite blushing young virgin of a straight man won’t give me cooties” etc)

    Note that even your monogamous partner of many decades could accidentally contract HIV due to blood contamination in a hospital or an accident at work etc, so it’s good practice to also get tested after things that involve getting stabbed with needles, cut in a risky environment, etc.

    If you’re concerned about potential stigma associated with HIV testing, you can get kits online:

    CDC | How do I find an HIV self-test?

    (these are usually fingerprick blood tests, and you can either see the results yourself at home immediately, or send it in for analysis, depending on the kit)

    If I get HIV, I will get AIDS and die: True or False?

    False, assuming you get treatment promptly and keep taking it. So those of you who were at “despair; life is over” can breathe a sigh of relief now.

    However, if you get HIV, it does currently mean you will have to take those meds every day for the rest of your (no reason it shouldn’t be long and happy) life.

    So, HIV is definitely still something to avoid, because it’s not great to have to take a life-saving medication every day. For a little insight as to what that might be like:

    HIV.gov | Taking HIV Medication Every Day: Tips & Challenges

    (as you’ll see there, there are also longer-lasting injections available instead of daily pulls, but those are much less widely available)

    Summary

    Some quick take-away notes-in-a-nutshell:

    • Getting HIV may have been a death sentence in the 1980s, but nowadays it’s been relegated to the level of “serious inconvenience”.
    • Happily, it is very preventable, with PrEP, PEP, and viral loads so low that they can’t transmit HIV, thanks to ARVs.
    • Washing will not help, by the way. Safe sex will, though!
      • As will celibacy and/or sexual exclusivity in seroconcordant relationships, e.g. you have the same (known! That means actually tested recently! Not just assumed!) HIV status as each other.
    • If you do get it, it is very manageable with ARVs, but prevention is better than treatment
    • There is no certain cure—yet. Some people (small number of case studies) may have been cured already with gene therapy, but we can’t know for sure yet.

    Want to know more? Check out:

    CDC | Let’s Stop HIV Together

    Take care!

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  • Dogs Paired With Providers at Hospitals Help Ease Staff and Patient Stress

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    DENVER — Outside HCA HealthONE Rose medical center, the snow is flying. Inside, on the third floor, there’s a flurry of activity within the labor and delivery unit.

    “There’s a lot of action up here. It can be very stressful at times,” said Kristina Fraser, an OB-GYN in blue scrubs.

    Nurses wheel a very pregnant mom past.

    “We’re going to bring a baby into this world safely,” Fraser said, “and off we go.”

    She said she feels ready in part due to a calming moment she had just a few minutes earlier with some canine colleagues.

    A pair of dogs, tails wagging, had come by a nearby nursing station, causing about a dozen medical professionals to melt into a collective puddle of affection. A yellow Lab named Peppi showered Fraser in nuzzles and kisses. “I don’t know if a human baby smells as good as that puppy breath!” Fraser had said as her colleagues laughed.

    The dogs aren’t visitors. They work here, too, specifically for the benefit of the staff. “I feel like that dog just walks on and everybody takes a big deep breath and gets down on the ground and has a few moments of just decompressing,” Fraser said. “It’s great. It’s amazing.”

    Hospital staffers who work with the dogs say there is virtually no bite risk with the carefully trained Labradors, the preferred breed for this work.

    The dogs are kept away from allergic patients and washed regularly to prevent germs from spreading, and people must wash their hands before and after petting them.

    Doctors and nurses are facing a growing mental health crisis driven by their experiences at work. They and other health care colleagues face high rates of depression, anxiety, stress, suicidal ideation, and burnout. Nearly half of health workers reported often feeling burned out in 2022, an increase from 2018, according to the Centers for Disease Control and Prevention. And the percentage of health care workers who reported harassment at work more than doubled over that four-year period. Advocates for the presence of dogs in hospitals see the animals as one thing that can help.

    That includes Peppi’s handler, Susan Ryan, an emergency medicine physician at Rose.

    Ryan said years working as an emergency room doctor left her with symptoms of PTSD. “I just was messed up and I knew it,” said Ryan, who isolated more at home and didn’t want to engage with friends. “I shoved it all in. I think we all do.”

    She said doctors and other providers can be good at hiding their struggles, because they have to compartmentalize. “How else can I go from a patient who had a cardiac arrest, deal with the family members telling them that, and go to a room where another person is mad that they’ve had to wait 45 minutes for their ear pain? And I have to flip that switch.”

    To cope with her symptoms of post-traumatic stress disorder, Ryan started doing therapy with horses. But she couldn’t have a horse in her backyard, so she got a Labrador. 

    Ryan received training from a national service dog group called Canine Companions, becoming the first doctor trained by the group to have a facility dog in an emergency room. Canine Companions has graduated more than 8,000 service dogs.

    The Rose medical center gave Ryan approval to bring a dog to work during her ER shifts. Ryan’s colleagues said they are delighted that a dog is part of their work life.

    “When I have a bad day at work and I come to Rose and Peppi is here, my day’s going to be made better,” EMT Jasmine Richardson said. “And if I have a patient who’s having a tough day, Peppi just knows how to light up the room.”

    Nursing supervisor Eric Vaillancourt agreed, calling Peppi “joyful.”

    Ryan had another dog, Wynn, working with her during the height of the pandemic. She said she thinks Wynn made a huge difference. “It saved people,” she said. “We had new nurses that had never seen death before, and now they’re seeing a covid death. And we were worried sick we were dying.”

    She said her hospital system has lost a couple of physicians to suicide in the past two years, which HCA confirmed to KFF Health News and NPR. Ryan hopes the canine connection can help with trauma. “Anything that brings you back to the present time helps ground you again. A dog can be that calming influence,” she said. “You can get down on the ground, pet them, and you just get calm.”

    Ryan said research has shown the advantages. For example, one review of dozens of original studies on human-animal interactions found benefits for a variety of conditions including behavioral and mood issues and physical symptoms of stress. 

    Rose’s president and CEO, Casey Guber, became such a believer in the canine connection he got his own trained dog to bring to the hospital, a black Lab-retriever mix named Ralphie.

    She wears a badge: Chief Dog Officer.

    Guber said she’s a big morale booster. “Phenomenal,” he said. “It is not uncommon to see a surgeon coming down to our administration office and rolling on the ground with Ralphie, or one of our nurses taking Ralphie out for a walk in the park.”

    This article is from a partnership that includes CPR News, NPR, and KFF Health News.

    KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.

    Subscribe to KFF Health News’ free Morning Briefing.

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

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