The Bitter Truth About Coffee (or is it?)

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The Bitter Truth About Coffee (or is it?)

Yesterday, we asked you for your (health-related) views on coffee. The results were clear: if we assume the responses to be representative, we’re a large group of coffee-enthusiasts!

One subscriber who voted for “Coffee is a healthy stimulant, hydrating, and full of antioxidants” wrote:

❝Not so sure about how hydrating it is! Like most food and drink, moderation is key. More than 2 or 3 cups make me buzz! Just too much.❞

And that fine point brings us to our first potential myth:

Coffee is dehydrating: True or False?

False. With caveats…

Coffee, in whatever form we drink it, is wet. This may not come as a startling revelation, but it’s an important starting point. It’s mostly water. Water itself is not dehydrating.

Caffeine, however, is a diuretic—meaning you will tend to pee more. It achieves its diuretic effect by increasing blood flow to your kidneys, which prompts them to release more water through urination.

See: Effect of caffeine on bladder function in patients with overactive bladder symptoms

How much caffeine is required to have a diuretic effect? About 4.5 mg/kg.

What this means in practical terms: if you weigh 70kg (a little over 150lbs), 4.5×70 gives us 315.

315mg is about how much caffeine might be in six shots of espresso. We say “might” because while dosage calculations are an exact science, the actual amount in your shot of espresso can vary depending on many factors, including:

  • The kind of coffee bean
  • How and when it was roasted
  • How and when it was ground
  • The water used to make the espresso
  • The pressure and temperature of the water

…and that’s all without looking at the most obvious factor: “is the coffee decaffeinated?”

If it doesn’t contain caffeine, it’s not diuretic. Decaffeinated coffee does usually contain tiny amounts of caffeine still, but with nearer 3mg than 300mg, it’s orders of magnitude away from having a diuretic effect.

If it does contain caffeine, then the next question becomes: “and how much water?”

For example, an Americano (espresso, with hot water added to make it a long drink) will be more hydrating than a ristretto (espresso, stopped halfway through pushing, meaning it is shorter and stronger than a normal espresso).

A subscriber who voted for “Coffee messes with sleep, creates dependency, is bad for the heart and gut, and is dehydrating too” wrote:

❝Coffee causes tachycardia for me so staying away is best. People with colon cancer are urged to stay away from coffee completely.❞

These are great points! It brings us to our next potential myth:

Coffee is bad for the heart: True or False?

False… For most people.

Some people, like our subscriber above, have an adverse reaction to caffeine, such as tachycardia. An important reason (beyond basic decency) for anyone providing coffee to honor requests for decaff.

For most people, caffeine is “heart neutral”. It doesn’t provide direct benefits or cause direct harm, provided it is enjoyed in moderation.

See also: Can you overdose on caffeine?

Some quick extra notes…

That’s all we have time for in myth-busting, but it’s worth noting before we close that coffee has a lot of health benefits; we didn’t cover them today because they’re not contentious, but they are interesting nevertheless:

Enjoy!

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  • What to say and how to help if someone close to you has attempted suicide

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    If someone close to you has attempted suicide, you may be feeling scared, confused or overwhelmed.

    You’re not alone – the most recent data shows more than one in three Australians have been close to someone who has died by or attempted suicide.

    Talking about suicide can be really hard. But your support can make a big difference. Here’s what you can do to support someone after a suicide attempt.

    Adam Pretty/Getty

    It’s OK not to have all the answers

    The days and weeks after a suicide attempt are often full of intense emotion — for the person who attempted and those who care about them.

    Your loved one might feel guilt, shame, anger, confusion or relief. They might also be tired, both physically and emotionally. Meanwhile, you might feel worried, shocked, helpless, or unsure about what to say.

    All of these feelings are normal. There’s no “right” way to feel in this situation. But staying connected and offering care (even in small ways) is one of the most powerful things you can do.

    How you can help: emotional support

    It’s OK to acknowledge the suicide attempt – avoiding it can add to feelings of stigma or isolation. But you don’t need to ask for details, and if you feel overwhelmed it’s also OK to set gentle boundaries.

    If you’re unsure what to say, you can be honest about that.

    Just be there. Let your loved one know you’re there to listen, without pressure or judgement.

    Don’t rush the conversation. If they’re not ready to talk, that’s OK. Let them set the pace.

    Avoid guilt or blame. Saying things like “how could you do this to us?” can make someone feel worse. Instead, say something like: “I’m really glad you’re still here. I care about you.”

    Reassure them. Tell them they’re not alone and that it’s OK to ask for help.

    How you can help: practical support

    Offer help with everyday tasks, such as going to appointments, making meals or tidying up.

    Encourage (but don’t force) activities they enjoy – maybe a walk, a movie, or just hanging out quietly.

    If you’re not sure what would help, ask. Try: “What would make today a bit easier for you?”

    Try not to take it personally if they seem withdrawn or say “nothing will help”. They may be feeling overwhelmed.

    Stay with them, if they’re open to it, or check in later with a text message. Small acts that don’t require a response, such as dropping off a meal, can go a long way.

    You don’t have to do this alone

    Supporting someone after a suicide attempt can be both physically and emotionally draining. You might find yourself constantly alert, watching for signs they might be struggling again. This “hypervigilance” is normal, but remember – you don’t have to do this alone.

    One person is not a support network. While your care and support make a real difference, professional help is essential too, whether from a psychologist, doctor or counsellor.

    It can also help to bring in other trusted people, such as siblings, parents, friends or teachers. Ask your loved one who they’d like to involve, and how.

    Support works best when shared.

    If you’re worried it might happen again

    Mental health professionals often help create a safety plan after a suicide attempt.

    This is a step-by-step guide for what to do if suicidal thoughts come back. It usually includes information such as warning signs, how to reduce immediate risks, and strategies to use in the moment.

    A plan can also involve personal motivations to keep going and a list of resources, trusted people and emergency contacts.

    Lifeline has a free app called Beyond Now, where a plan can be written, saved, and shared with trusted people.

    If you want to – and your loved one is open to it – ask if you can be part of the plan or at least know what to do if they’re in crisis again.

    Don’t forget: your wellbeing matters too

    This situation can take a toll on your own wellbeing. You might feel anxious, tired, sad, or even guilty, and struggle with sleep or appetite.

    It’s OK to not be OK.

    Make time to look after yourself – eat well, rest, move your body and talk to people you trust. You don’t need to share private details about your loved one to get the support you need.

    If it feels overwhelming, speak to a doctor or therapist. Your GP can help set up a mental health treatment plan, which helps you access subsidised counselling.

    And if you ever have thoughts of suicide yourself, or you’re deeply worried about someone, reach out – help is available 24/7.

    Recovery is different for everyone

    Recovery after a suicide attempt doesn’t follow a set path – it’s different for everyone. It may involve professional support, medication, changes in routine, or time off from work or school. Rebuilding takes time and often comes with ups and downs.

    Patience and compassion – for your loved one and yourself – can make all the difference.

    Remember, you’re not alone, and there is help available.

    Beyond Blue:

    • call: 1300 22 4636
    • visit their website.

    Suicide Call Back Service is a free nationwide service providing 24/7 phone and online counselling to people affected by suicide:

    • call: 1300 659 467
    • visit their website.

    13YARN is a free and confidential 24/7 national crisis support line for Aboriginal and Torres Strait Islander people who are feeling overwhelmed or having difficulty coping. Call 13 92 76. WellMob also has a list of culturally safe mental health organisations for First Nations people.

    Milena Heinsch, Professor and Head of Social Work, University of Tasmania and Campbell Tickner, Senior Fellow in Social Work, University of Tasmania

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

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  • What families should know about whooping cough

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    What you need to know

    • Whooping cough is a bacterial respiratory illness that can cause long-term symptoms and even death.
    • Two types of vaccines protect against it: The DTap vaccine is given to babies and children up to 6 years old, while the Tdap vaccine is given to children 7 years and older and adults.
    • If you or your child has symptoms of whooping cough, isolate them from vulnerable family members and seek treatment early to reduce the risk of serious illness.

    Whooping cough, also called pertussis, is a highly contagious respiratory illness that’s particularly dangerous for babies. Cases are now at least four times as high as they were at this time last year. Fortunately, vaccines are extremely effective at preventing the disease across age groups.

    Read on to learn about the symptoms and risks of whooping cough, who should get vaccinated, and what to do when symptoms appear.

    What are the symptoms of whooping cough?

    Early symptoms of whooping cough typically appear five to 10 days after exposure and may include a runny or stuffy nose, a low fever, and a mild cough. One to two weeks later, some people may experience extreme coughing fits that can cause shortness of breath, trouble sleeping, vomiting, fatigue, and rib fractures. These fits usually last one to six weeks, but they can last up to 10 weeks after infection. 

    About one in three babies under 1 year old who contract whooping cough require hospitalization, as they may experience life-threatening pauses in breathing (called apnea), pneumonia, and other complications. Children and adults who have asthma or are immunocompromised are also more likely to develop severe symptoms.

    Which vaccines protect against whooping cough, and who is eligible?

    Two types of vaccines protect against whooping cough: The DTap vaccine is given to babies and children up to 6 years old, while the Tdap vaccine is given to children 7 years and older and adults. Both vaccines protect against infections from diptheria, tetanus, and pertussis.

    The Centers for Disease Control and Prevention recommends that pregnant people receive a single dose of the Tdap vaccine between 27 and 36 weeks of pregnancy, as this lowers the risk of whooping cough in babies younger than 2 months old by 78 percent.

    Multiple doses are required for the best protection. Learn more about DTaP and Tdap vaccine schedules from the CDC, and talk to your health care provider about how many doses you and your children need.

    What should families do when whooping cough symptoms appear?

    If you or your child has symptoms of whooping cough, isolate the infected person from vulnerable family members. It’s also important to seek treatment early to reduce the risk of serious illness. Health care providers typically prescribe antibiotics to those recovering at home.

    Over-the-counter cough and cold medicine is not recommended for children under 4 years old. However, limiting smoke, dust, and chemical fumes at home and using a humidifier can reduce coughing. If you are caring for someone with whooping cough who exhibits pauses in breathing or develops gray or blue skin, call 911 immediately.

    For more information, talk to your health care provider.

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  • The voice in your head may help you recall and process words. But what if you don’t have one?

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    Can you imagine hearing yourself speak? A voice inside your head – perhaps reciting a shopping list or a phone number? What would life be like if you couldn’t?

    Some people, including me, cannot have imagined visual experiences. We cannot close our eyes and conjure an experience of seeing a loved one’s face, or imagine our lounge room layout – to consider if a new piece of furniture might fit in it. This is called “aphantasia”, from a Greek phrase where the “a” means without, and “phantasia” refers to an image. Colloquially, people like myself are often referred to as having a “blind mind”.

    While most attention has been given to the inability to have imagined visual sensations, aphantasics can lack other imagined experiences. We might be unable to experience imagined tastes or smells. Some people cannot imagine hearing themselves speak.

    A recent study has advanced our understanding of people who cannot imagine hearing their own internal monologue. Importantly, the authors have identified some tasks that such people are more likely to find challenging.

    fizkes/Shutterstock

    What the study found

    Researchers at the University of Copenhagen in Denmark and at the University of Wisconsin-Madison in the United States recruited 93 volunteers. They included 46 adults who reported low levels of inner speech and 47 who reported high levels.

    Both groups were given challenging tasks: judging if the names of objects they had seen would rhyme and recalling words. The group without an inner monologue performed worse. But differences disappeared when everyone could say words aloud.

    Importantly, people who reported less inner speech were not worse at all tasks. They could recall similar numbers of words when the words had a different appearance to one another. This negates any suggestion that aphants (people with aphantasia) simply weren’t trying or were less capable.

    image of boy sitting with diagram of gold brain superimposed over image
    Hearing our own imagined voice may play an important role in word processing. sutadimages/Shutterstock

    A welcome validation

    The study provides some welcome evidence for the lived experiences of some aphants, who are still often told their experiences are not different, but rather that they cannot describe their imagined experiences. Some people feel anxiety when they realise other people can have imagined experiences that they cannot. These feelings may be deepened when others assert they are merely confused or inarticulate.

    In my own aphantasia research I have often quizzed crowds of people on their capacity to have imagined experiences.

    Questions about the capacity to have imagined visual or audio sensations tend to be excitedly endorsed by a vast majority, but questions about imagined experiences of taste or smell seem to cause more confusion. Some people are adamant they can do this, including a colleague who says he can imagine what combinations of ingredients will taste like when cooked together. But other responses suggest subtypes of aphantasia may prove to be more common than we realise.

    The authors of the recent study suggest the inability to imagine hearing yourself speak should be referred to as “anendophasia”, meaning without inner speech. Other authors had suggested anauralia (meaning without auditory imagery). Still other researchers have referred to all types of imagined sensation as being different types of “imagery”.

    Having consistent names is important. It can help scientists “talk” to one another to compare findings. If different authors use different names, important evidence can be missed.

    bare foot on mossy green grass
    We’re starting to broaden our understanding of the senses and how we imagine them. Napat Chaichanasiri/Shutterstock

    We have more than 5 senses

    Debate continues about how many senses humans have, but some scientists reasonably argue for a number greater than 20.

    In addition to the five senses of sight, smell, taste, touch and hearing, lesser known senses include thermoception (our sense of heat) and proprioception (awareness of the positions of our body parts). Thanks to proprioception, most of us can close our eyes and touch the tip of our index finger to our nose. Thanks to our vestibular sense, we typically have a good idea of which way is up and can maintain balance.

    It may be tempting to give a new name to each inability to have a given type of imagined sensation. But this could lead to confusion. Another approach would be to adapt phrases that are already widely used. People who are unable to have imagined sensations commonly refer to ourselves as “aphants”. This could be adapted with a prefix, such as “audio aphant”. Time will tell which approach is adopted by most researchers.

    Why we should keep investigating

    Regardless of the names we use, the study of multiple types of inability to have an imagined sensation is important. These investigations could reveal the essential processes in human brains that bring about a conscious experience of an imagined sensation.

    In time, this will not only lead to a better understanding of the diversity of humans, but may help uncover how human brains can create any conscious sensation. This question – how and where our conscious feelings are generated – remains one of the great mysteries of science.

    Derek Arnold, Professor, School of Psychology, The University of Queensland

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

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  • Scarcity Brain – by Michael Easter

    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.

    After a brief overview of theevolutionary psychology underpinnings of the scarcity brain, the author grounds the rest of this book firmly in the present. He explains how the scarcity loop hooks us and why we crave more, and what factors can increase or lessen its hold over us.

    As for what things we are wired to consider “potentially scarce any time now” no matter how saturated we are in them, he looks at an array of categories, each with their nuances. From the obvious such as “food” and “stuff“, to understandable “information” and “happiness“, to abstractions like “influence“, he goes to many sources—experts of various kinds from around the world—to explore how we can know “how much is enough”, and—which can be harder—act accordingly.

    The key, he argues, is not in simply wanting less, but in understanding why we crave more in the first place, get rid of our worst habits, and use what we already have, better.

    Bottom line: if you feel a gnawing sense of needing more “to be on the safe side”, this book can help you to be a little more strategic (and at the same time, less stressed!) about that.

    Click here to check out Scarcity Brain, and manage yours more mindfully!

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  • How To Make Drinking Less Harmful

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    Making Drinking Less Harmful

    We often talk of the many ways alcohol harms our health, and we advocate for reducing (or eliminating) its consumption. However, it’s not necessarily as easy as all that, and it might not even be a goal that everyone has. So, if you’re going to imbibe, what can you do to mitigate the harmful effects of alcohol?

    There is no magical solution

    Sadly. If you drink alcohol, there will be some harmful effects, and nothing will completely undo that. But there are some things that can at least help—read on to learn more!

    Coffee

    It’s not the magical sober-upperer that some would like it to be, but it is good against the symptoms of alcohol intoxication, and slightly reduces the harm to your body, because it is:

    • Hydrating (whereas alcohol is dehydrating)
    • A source of antioxidants (whereas alcohol causes oxidative stress, which has nothing to do with psychological stress, and is a kind of cellular damage)
    • A stimulant, assuming it is not decaffeinated (it’s worth noting that its stimulant effects work partly by triggering vasoconstriction, which is the opposite of the vasodilation caused by alcohol)

    To this end, the best coffee for anti-alcohol effects should be:

    • Caffeinated, and strong
    • Long (we love espresso, but we need hydration here and that comes from volume!)
    • Without sugar (you don’t want to create an adverse osmotic gradient to draw water back out from your body)

    As for milk/cream/whatever, have it or don’t, per your usual preference. It won’t make any difference to the alcohol in your system.

    Antioxidants, polyphenols, flavonoids, and things with similar mechanisms

    We mentioned that coffee contains antioxidants, but if you want to really bring out the heavy guns, taking more powerful antioxidants can help a lot. If you don’t have the luxury of enjoying berries and cacao nibs by the handful, supplements that have some similar benefits are a perfectly respectable choice.

    For example, you might want to consider green tea extract:

    L-theanine 200mg (available on Amazon)

    Specialist anti-alcohol drugs

    These are somewhat new and the research is still ongoing, but for example:

    Dihydromyricetin (DHM) as a novel anti-alcohol intoxication medication

    In short, DHM is a flavonoid (protects against the oxidative stress caused by alcohol, and has been found to reduce liver damage—see the above link) and also works on GABA-receptors (reduces alcohol withdrawal symptoms after cessation of drinking, and thus also reduces hangovers).

    Once again: the marketing claims of such drugs may be bold, but there’s a lot that’s not known and they’re not a magic pill. They do NOT mean you can take them alongside drinking and drink what you like with impunity. However, they may help mitigate some of the harmful effects of alcohol. If you wish to try them, these can be purchased at pharmacies or online, for example:

    Alcohol Defense Capsules (available on Amazon)

    Bottom line

    Alcohol is bad for your health and none of the above will eliminate the health risks. But, if you’re going to have alcohol, then having the above things as well may at least somewhat reduce the harm done.

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  • Asparagus vs Sweetcorn – Which is Healthier?

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    Our Verdict

    When comparing asparagus to sweetcorn, we picked the asparagus.

    Why?

    In terms of macros, sweetcorn starts off strong with slightly more protein and notably more carbs for the same fiber, while still keeping glycemic index low, so we say this first round is a marginal win for corn.

    In the category of vitamins, asparagus has a lot more of vitamins A (yes, really, 4x more!), B2, B7, B9, E, and K (138x the amount for this one), while sweetcorn has more of vitamins B2, B5, and C, giving asparagus an overwhelming win here.

    For anyone wondering “why are we so surprised about the vitamin A?”, it’s because vitamin A makes things yellow, and corn is yellow while asparagus is green. But, there are more factors that affect the color of each plant, that’s all.

    Looking at minerals, asparagus has more calcium, copper, iron, potassium, selenium, and zinc, while corn has more magnesium, phosphorus, and potassium, yielding a compelling 5:3 win to asparagus (especially with asparagus having 12x the calcium; do not underestimate green things as a source of calcium; where do you think cows get theirs from?).

    In other considerations, asparagus has a higher polyphenol content (with quercetin scoring notably), while sweetcorn is high in carotenoids such as lutein (whence the yellow color, by the way). So, we’ll call it a tie in this round.

    Adding up the sections makes for an overall win for asparagus on tie-breaks (both plants won two sections each, but asparagus had the greater margins of difference by far), but by all means enjoy either or both, as diversity is best!

    Want to learn more?

    You might like:

    What’s Your Plant Diversity Score?

    Enjoy!

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