
Lies I Taught in Medical School – by Dr. Robert Lufkin
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There seems to be a pattern of doctors who practice medicine one way, get a serious disease personally, and then completely change their practice of medicine afterwards. This is one of those cases.
Dr. Lufkin here presents, on a chapter-by-chapter basis, the titularly promised “lies” or, in more legally compliant speak (as he acknowledges in his preface), flawed hypotheses that are generally taught as truths. In many cases, the “lie” is some manner of “xyz is normal and nothing to worry about”, and/or “there is nothing to be done about xyz; suck it up”.
The end result of the information is not complicated—enjoy a plants-forward whole foods low-carb diet to avoid metabolic diseases and all the other things to branch off from same (Dr. Lufkin makes a fair case for metabolic disease leading to a lot of secondary diseases that aren’t considered metabolic diseases per se). But, the journey there is actually important, as it answers a lot of questions that are much less commonly understood, and often not even especially talked-about, despite their great import and how they may affect health decisions beyond the dietary. Things like understanding the downsides of statins, or the statistical models that can be used to skew studies, per relative risk reduction and so forth.
Bottom line: this book gives the ins and outs of what can go right or wrong with metabolic health and why, and how to make sure you don’t sabotage your health through missing information.
Click here to check out Lies I Taught In Medical School, and arm yourself with knowledge!
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Kidney Beans vs Chickpeas – Which is Healthier?
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Our Verdict
When comparing kidney beans to chickpeas, we picked the chickpeas.
Why?
Both are great! But there’s a clear winner here today:
In terms of macros, chickpeas have more protein, carbs, and fiber, making them the more nutrient-dense option in this category.
In the category of vitamins, kidney beans have more of vitamins B1, B3, and K, while chickpeas have more of vitamins A, B2, B5, B6, B7, B9, C, E, and choline, taking the victory again here.
When it comes to minerals, it’s a similar story: kidney beans have more potassium, while chickpeas have more calcium, copper, iron, magnesium, manganese, phosphorus, selenium, and zinc. Another easy win for chickpeas.
Adding up the three wins makes chickpeas the clear overall winner, but of course, as ever, enjoy either or both; diversity is good!
Want to learn more?
You might like to read:
What’s Your Plant Diversity Score?
Take care!
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Curious Kids: what are the main factors in forming someone’s personality?
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“What are the main factors in forming someone’s personality?” – Emma, age 10, from Shanghai
Hello Emma, and thank you for this very interesting question!
Let’s start by exploring what we mean by personality. Have you noticed no two people are completely alike? We all see, experience, and understand the world in different ways.
For example, some people love spending time with friends and being the centre of attention, whereas other people are more shy and enjoy having time to themselves.
Your unique personality is shaped by your genes as well as various influences in your environment. And your personality plays an important role in how you interact with the world.
The big five
Did you know there are scientists who spend time researching personality? Their research is concerned with describing the ways people differ from each other, and understanding how these differences could be important for other parts of life such as our health and how well we do in school or at work.
There are many different perspectives on personality. A widely accepted viewpoint based on a lot of research is called the five factor model or the “big five”. According to this theory, a great deal of a person’s personality can be summarised in terms of where they sit on five dimensions, called traits:
- the introversion-extraversion trait refers to how much someone is outgoing and social (extroverted) or prefers being with smaller groups of friends or focusing on their own thoughts (introverted)
- agreeableness captures how much someone tends to be cooperative and helps others
- openness to experience refers to how much a person is creative and enjoys experiencing new things
- neuroticism describes a person’s tendency to experience negative feelings, like worrying about things that could go wrong
- conscientiousness encompasses how much a person is organised, responsible, and dedicated to things that are important to them, like schoolwork or training for a sports team.
A person can have high, low, or moderate levels of each of these traits. And understanding whether someone has higher or lower levels of the big five can tell us a lot about how we might expect them to behave in different situations.
So what shapes our personalities?
A number of factors shape our personalities, including our genes and social environment.
Our bodies are made up of many very small structures called cells. Within these cells are genes. We inherit genes from our parents, and they carry the information needed to make our bodies and personalities. So, your personality may be a bit like your parents’ personalities. For example, if you’re an outgoing sort of person who loves to meet new people, perhaps one or both of your parents are very social too.
Our personalities are influenced by the genes we get from our parents.
KieferPix/ShutterstockPersonalities are also affected by our environment, such as our experiences and our relationships with family and friends. For example, some research has shown our relationships with our parents can influence our personality. If we have loving and warm relationships, we may be more agreeable and open. But if our relationships are hurtful or stressful, this may increase our neuroticism.
Another study showed that, over time, young children who were more physically active were less introverted (less shy) and less likely to get very upset when things don’t go their way, compared to children who were less physically active. Although we don’t know why this is for sure, one possible explanation is that playing sport leads to reduced shyness because it introduces children to different people.
While we’re learning more about personality development all the time, research in this area presents quite a few challenges. Many different biological, cultural and environmental influences shape our development, and these factors can interact with each other in complex ways.
Is our personality fixed once we become adults?
Although we develop most of our personality when we are young, and people’s personalities tend to become more stable as they get older, it is possible for aspects of a person’s personality to change, even when they are fully grown.
A good example of this can be seen among people who seek treatment for conditions like anxiety or depression. People who respond well to working with a psychologist can show decreases in neuroticism, indicating they become less likely to worry a lot or feel strong negative feelings when something stressful happens.
Hello, Curious Kids! Do you have a question you’d like an expert to answer? Ask an adult to send your question to mailto:[email protected]
Tim Windsor, Professor, Director, Generations Research Initiative, College of Education, Psychology and Social Work, Flinders University and Natalie Goulter, Lecturer, College of Education, Psychology and Social Work, Flinders University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Winter Wellness & The Pills That Increase Your Alzheimer’s Risk
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This week in health news…
Do not go gentle into that good night
As wildfires rage in California, snow is falling from Texas to Georgia, meaning that a lot of people are facing weather they’re not accustomed to, in houses that were not built for it. And that’s the lucky ones; there are many thousands of people who are homeless, of whom many will die.
Hopefully all our readers are safe, but it pays to watch out for the signs of hypothermia as it is a condition that really sneaks up on people and, in the process, takes away their ability to notice the hypothermia. You and your loved ones are not immune to this, so it’s good to keep an eye on each other, looking out for:
- Shivering, first ← when this stops, assuming it’s not because the temperature has risen, it is often a sign of hypothermia entering a later stage, in which the body is no longer responding appropriately to the cold
- Slurred speech or mumbling
- Slow, shallow breathing
- A weak pulse
- Clumsiness or lack of coordination
- Drowsiness or very low energy
- Confusion or memory loss
- Loss of consciousness
- In infants, bright red, cold skin
How cold is too cold? It doesn’t even have to be sub-zero. According to the CDC, temperatures of 4℃ (40℉) can be low enough to cause hypothermia.
Read in full: The warning signs to notice if someone has hypothermia
Related: Cold Weather Health Risks
Lethal lottery of pathogens
In Minnesota, hospital emergency room waiting times have skyrocketed since yesterday (at time of writing), with 40% of Minnesota’s 1,763 flu-related hospitalizations this fall and winter occurring in the same week, according to yesterday’s report. To put it further into perspective, 17 out of 20 of this season’s flu outbreaks have occurred in the past two weeks.
And that’s just the flu, without considering COVID, RSV, and Norovirus, which are also all running rampant in MN right now.
The advice presently is:
❝Go to the ER if you are super-sick. If you are not super-sick, go to urgent care, go to your clinic, schedule a virtual appointment.❞
And if you’re not in Minneapolis? These stats won’t apply, but definitely consider, before going to the hospital, whether you might leave sicker than you arrived, and plan accordingly, making use of telehealth where reasonably possible.
Read in full: Minnesota ERs stressed by “quad-demic” of COVID, flu, RSV, norovirus
Related: Move over, COVID and Flu! We Have “Hybrid Viruses” To Contend With Now
Sleep, but at what cost?
This was a study looking at the effects of sleeping pills on the brain, specifically zolpidem (most well-known by its brand name of Ambien).
What they found is that while it does indeed effectively induce sleep, part of how it does that is suppressing norepinephrine oscillations (which might otherwise potentially wake you up, though in healthy people these oscillations and the micro-arousals that they cause shouldn’t disrupt sleep at all, and are just considered part of our normal sleep cycles), which oscillations are necessary to generate the pumping action required to move cerebrospinal fluid through the glymphatic system while asleep.
This is a big problem, because the glymphatic system is almost entirely responsible for keeping the brain free from waste products such as beta-amyloids (whose build-up is associated with Alzheimer’s disease and is considered to be a significant part of Alzheimer’s pathogensesis) and alpha-synuclein (same but for Parkinson’s disease), amongst others:
Read in full: Common sleeping pill may pave way for disorders like Alzheimer’s
Related: How To Clean Your Brain (Glymphatic Health Primer)
Take care!
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Bushfire smoke affects children differently. Here’s how to protect them
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Bushfires are currently burning in Australian states including Victoria, Tasmania, Western Australia and South Australia. In some areas, fire authorities have warned residents about the presence of smoke.
Bushfire smoke is harmful to our health. Tiny particles of ash can lodge deep in the lungs.
Exposure to this type of smoke may worsen existing conditions such as asthma, and induce a range of health effects from irritation of the eyes, nose and throat to changes in the cardiovascular system.
Public health recommendations during smoke events tend to provide general advice, and don’t often include advice specifically geared at children. But children are not just little adults. They are uniquely vulnerable to environmental hazards such as bushfire smoke for a number of reasons.
Different physiology, different behaviour
Children’s lungs are still developing and maturing.
Airways are smaller in children, especially young children, which is associated with greater rates of particle deposition – when particles settle on the surfaces of the airways.
Children also breathe more air per kilogram of body weight compared with adults, and therefore inhale more polluted air relative to their size.
Further, children’s detoxification systems are still developing, so environmental toxins take longer to effectively clear from their bodies.
Meanwhile, children’s behaviour and habits may expose them to more environmental toxins than adults. For example, they tend to do more physical activity and spend more time outdoors. Higher levels of physical activity lead to more air inhaled per kilogram of body weight.
Also, a normal and important part of children’s early play is exploring their environment, including by putting things in their mouth. This can result in kids ingesting soil, dust and dirt, which often contain environmental contaminants.
For these reasons, it’s important to consider the specific needs of children when providing advice on what to do when there’s smoke in the air.
Keeping our environments healthy
The Australian government offers recommendations for minimising the health risks from exposure to bushfire smoke. The main advice includes staying indoors and keeping doors and windows closed.
This is great advice when the smoke is thick outside, but air pollutants may still accumulate inside the home. So it’s important to air your home once the smoke outside starts to clear. Take advantage of wind changes to open up and get air moving out of the house with a cross breeze.
Kids are natural scientists, so get them involved. For example, you and your child can “rate” the air each hour by looking at a landmark outside your home and rating how clearly you can see it. When you notice the haze is reducing, open up the house and clear the air.
Because air pollutants settle onto surfaces in our home and into household dust, an easy way to protect kids during smoky periods is to do a daily dust with a wet cloth and vacuum regularly. This will remove pollutants and reduce ingestion by children as they play. Frequent hand washing helps too.
Healthy bodies and minds
Research exploring the effects of bushfire smoke exposure on children’s health is sparse. However, during smoke events, we do see an increase in hospital visits for asthma, as well as children reporting irritation to their eyes, nose and throat.
If your child has asthma or another medical condition, ensure they take any prescribed medications on a regular schedule to keep their condition well controlled. This will minimise the risk of a sudden worsening of their symptoms with bushfire smoke exposure.
Make sure any action plans for symptom flare-ups are up to date, and ensure you have an adequate supply of in-date medication somewhere easy to locate and access.
Children may be anxious during a bushfire.
Media_Photos/ShutterstockKids can get worried during bushfires, and fire emergencies have been linked with a reduction in children’s mental health. Stories such as the Birdie’s Tree books can help children understand these events do pass and people help one another in times of difficulty.
Learning more about air pollution can help too. Our group has a children’s story explaining how air pollution affects our bodies and what can help.
It’s also important for parents and caregivers not to get too stressed, as children cope better when their parents manage their own anxiety and help their children do the same. Try to strike a balance between being vigilant and staying calm.
What about masks?
N95 masks can protect the wearer from fine particles in bushfire smoke, but their use is a bit complicated when it comes to kids. Most young children won’t be able to fit properly into an N95 mask, or won’t tolerate the tight fit for long periods. Also, their smaller airways make it harder for young children to breathe through a mask.
If you choose to use an N95 mask for your children, it’s best to save them for instances when high-level outdoor exposure is unavoidable, such as if you’re going outside when the smoke is very thick.
N95 masks should be replaced after around four hours or when they become damp.
If your child has an existing heart or lung condition, consult their doctor before having them wear an N95 mask.
Our team is currently recruiting for a study exploring the effects of bushfire smoke in children. If you live in south east Queensland and are interested in participating in the event of a bushfire or hazard reduction burn near your home, please express your interest here.
Dwan Vilcins, Group leader, Environmental Epidemiology, Children’s Health Environment Program, The University of Queensland; Nicholas Osborne, Associate Professor, School of Public Health, The University of Queensland, and Paul D. Robinson, Conjoint Professor in Respiratory and Sleep Medicine, Child Health Research Centre, The University of Queensland
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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The Forgotten Exercise That Could Save Your Health After 50
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A lot depends on this:
Your heart is also a “use it or lose it” muscle
It’s well-known that muscles in general require maintenance (by regular exertion thereof), or they will atrophy and weaken. However, this is not only true of our skeletal muscles (the ones people think about when they say “muscles”), but also muscles like the heart.
Now, of course, we are all using our heart all the time, every day. One might be tempted to think it’ll be fine. It won’t; the body will not maintain anything beyond necessity. Thus, the prescription here is to regularly get our heart out of “zone 1”, its regular resting rate, which is usually about 50% or so of its maximum rate, and into “zone 2”, in which it beats at 60–70% of its maximum rate.
To find your maximum rate: as a general rule of thumb, 220 minus your age will usually give a fairly accurate estimate, unless you are unusually fit or unusually unfit.
Alternatively, if you have a fitness tracker, it can probably give you a number based on actual observation of your heartrate.
The benefits of doing so, as mentioned in this video:
- Improves heart health, circulation, and lowers blood pressure.
- Burns belly fat by using stored fat as energy*
- Boosts aerobic capacity, making daily activities easier.
- Enhances insulin sensitivity, mental health, and sleep.
- Helps manage arthritis, osteoporosis, and high cholesterol.
*note that this won’t happen in zone 1, and if you spend more than a little time in zone 3, it will happen but your body will do a metabolic slump afterwards to compensate, while doing its best to replenish the fat reserves. So, zone 2 is really the goal for this one, unless you want to do HIIT, which is beyond the scope of today’s article.
He recommends activities like brisk walking, cycling, or swimming. You don’t have to become a triathlon competitor if you don’t want to, but just pick what you like and do it at a fair pace. If it’s the brisk walking or cycling*, then (unless it’s very hot/humid where you are), if you break a sweat, you probably broke out of zone 2 and into zone 3. Which is fine, but wasn’t what you were aiming for, so it’s a sign you can go a little easier than that if you want.
*of course the same statement is also true of swimming, but you’ll not notice sweating in a pool 😉
As for how much and how often, averaging 20 minutes per day is good; if you want to condense that into 40 minutes 2–3 times per week, that’s fine too.
For more on all of this, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
The Doctor Who Wants Us To Exercise Less & Move More
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5 Exercises That Fix 95% Of Your Problems
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Well, your musculoskeletal problems, anyway! The exercises won’t, for example, do your taxes or deal with your loud neighbor for you. But, they will help your body be strong, supple, and pain-free:
20 minutes total
The exercises & what they do:
- Dead hang: improves shoulder health, decompresses the spine, and strengthens grip. Hang from a bar for 20–30 seconds, progressing to 1–2 minutes.
- Glute bridge: builds glute strength, improves core stability, and reduces lower back tension. Perform 2 sets of 10–15 reps, with variations like single-leg bridges or added weight.
- Farmer’s walk: a full-body workout that strengthens the shoulders, core, and grip while improving posture. Walk with weights for 30–60 seconds, 3 rounds, increasing weight or duration over time.
- Resting squat: enhances ankle, hip, and knee mobility, restoring natural functionality. Hold a deep squat for 20–30 seconds, progressing to 1–2 minutes. Use support for balance if necessary.
- Thread the needle: improves flexibility, reduces tension, and enhances rotational mobility. Perform slow, controlled rotations from an all-fours position, 2 sets of 10 reps per side.
Suggested 20-minute workout plan:
- Dead hang: 3 sets of 30 seconds
- Glute bridge: 2 sets of 10–15 reps
- Farmer’s walk: 30–60 seconds, 3 rounds
- Resting squat: hold for 20–30 seconds, 2–3 rounds
- Thread the needle: 2 sets of 10 reps per side
It is recommended to perform this routine 3 times per week with 1-minute rests between sets.
For more on all of these, plus visual demonstrations, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like:
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