Limitless Expanded Edition – by Jim Kwik
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This is a little flashier in presentation than we usually go for here, but the content is actually very good. Indeed, we’ve featured Jim Kwik before, with different, but also good content—in that case, physical exercises that strengthen the brain.
This time, Kwik (interspersed with motivational speeches that you may or may not benefit from, but they are there) offers a step-by-step course in improving various metrics of cognitive ability. His methods were produced by trial and error, and now have been refined and enjoyed by man. If it sounds like a sales gimmick, it is a bit, but the good news is that everything you need to benefit is in the book; it’s not about upselling to a course or “advanced” books or whatnot.
The style is enthusiastically conversational, and instructions when given (which is often) are direct and clear.
Bottom line: one of the most critical abilities a brain can have is the ability to improve itself, so whatever level your various cognitive abilities are at right now, if you apply this book, you will almost certainly improve in one or more areas, which will make it worth the price of the book.
Click here to check out Limitless, and find out what you can do!
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What’s the difference between a heart attack and cardiac arrest? One’s about plumbing, the other wiring
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In July 2023, rising US basketball star Bronny James collapsed on the court during practice and was sent to hospital. The 18-year-old athlete, son of famous LA Lakers’ veteran LeBron James, had experienced a cardiac arrest.
Many media outlets incorrectly referred to the event as a “heart attack” or used the terms interchangeably.
A cardiac arrest and a heart attack are distinct yet overlapping concepts associated with the heart.
With some background in how the heart works, we can see how they differ and how they’re related.
Explode/Shutterstock Understanding the heart
The heart is a muscle that contracts to work as a pump. When it contracts it pushes blood – containing oxygen and nutrients – to all the tissues of our body.
For the heart muscle to work effectively as a pump, it needs to be fed its own blood supply, delivered by the coronary arteries. If these arteries are blocked, the heart muscle doesn’t get the blood it needs.
This can cause the heart muscle to become injured or die, and results in the heart not pumping properly.
Heart attack or cardiac arrest?
Simply put, a heart attack, technically known as a myocardial infarction, describes injury to, or death of, the heart muscle.
A cardiac arrest, sometimes called a sudden cardiac arrest, is when the heart stops beating, or put another way, stops working as an effective pump.
In other words, both relate to the heart not working as it should, but for different reasons. As we’ll see later, one can lead to the other.
Why do they happen? Who’s at risk?
Heart attacks typically result from blockages in the coronary arteries. Sometimes this is called coronary artery disease, but in Australia, we tend to refer to it as ischaemic heart disease.
The underlying cause in about 75% of people is a process called atherosclerosis. This is where fatty and fibrous tissue build up in the walls of the coronary arteries, forming a plaque. The plaque can block the blood vessel or, in some instances, lead to the formation of a blood clot.
Atherosclerosis is a long-term, stealthy process, with a number of risk factors that can sneak up on anyone. High blood pressure, high cholesterol, diet, diabetes, stress, and your genes have all been implicated in this plaque-building process.
Other causes of heart attacks include spasms of the coronary arteries (causing them to constrict), chest trauma, or anything else that reduces blood flow to the heart muscle.
Regardless of the cause, blocking or reducing the flow of blood through these pipes can result in the heart muscle not receiving enough oxygen and nutrients. So cells in the heart muscle can be injured or die.
Here’s a simple way to remember the difference. Author provided But a cardiac arrest is the result of heartbeat irregularities, making it harder for the heart to pump blood effectively around the body. These heartbeat irregularities are generally due to electrical malfunctions in the heart. There are four distinct types:
- ventricular tachycardia: a rapid and abnormal heart rhythm in which the heartbeat is more than 100 beats per minute (normal adult, resting heart rate is generally 60-90 beats per minute). This fast heart rate prevents the heart from filling with blood and thus pumping adequately
- ventricular fibrillation: instead of regular beats, the heart quivers or “fibrillates”, resembling a bag of worms, resulting in an irregular heartbeat greater than 300 beats per minute
- pulseless electrical activity: arises when the heart muscle fails to generate sufficient pumping force after electrical stimulation, resulting in no pulse
- asystole: the classic flat-line heart rhythm you see in movies, indicating no electrical activity in the heart.
Remember this flat-line rhythm from the movies? It’s asystole, when there’s no electrical activity in the heart. Kateryna Kon/Shutterstock Cardiac arrest can arise from numerous underlying conditions, both heart-related and not, such as drowning, trauma, asphyxia, electrical shock and drug overdose. James’ cardiac arrest was attributed to a congenital heart defect, a heart condition he was born with.
But among the many causes of a cardiac arrest, ischaemic heart disease, such as a heart attack, stands out as the most common cause, accounting for 70% of all cases.
So how can a heart attack cause a cardiac arrest? You’ll remember that during a heart attack, heart muscle can be damaged or parts of it may die. This damaged or dead tissue can disrupt the heart’s ability to conduct electrical signals, increasing the risk of developing arrhythmias, possibly causing a cardiac arrest.
So while a heart attack is a common cause of cardiac arrest, a cardiac arrest generally does not cause a heart attack.
What do they look like?
Because a cardiac arrest results in the sudden loss of effective heart pumping, the most common signs and symptoms are a sudden loss of consciousness, absence of pulse or heartbeat, stopping of breathing, and pale or blue-tinged skin.
But the common signs and symptoms of a heart attack include chest pain or discomfort, which can show up in other regions of the body such as the arms, back, neck, jaw, or stomach. Also frequent are shortness of breath, nausea, light-headedness, looking pale, and sweating.
What’s the take-home message?
While both heart attack and cardiac arrest are disorders related to the heart, they differ in their mechanisms and outcomes.
A heart attack is like a blockage in the plumbing supplying water to a house. But a cardiac arrest is like an electrical malfunction in the house’s wiring.
Despite their different nature both conditions can have severe consequences and require immediate medical attention.
Michael Todorovic, Associate Professor of Medicine, Bond University and Matthew Barton, Senior lecturer, School of Nursing and Midwifery, Griffith University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Metabolism Made Simple – by Sam Miller
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The author, a nutritionist, sets out to present exactly what the title promises: metabolism made simple.
On this, he delivers. Explaining things from the most basic elements upwards, he gives a well-rounded introduction to the science of metabolism and what it means for us when it comes to our dietary habits.
The book is in large part a how-to, but with a lot of flexibility left to the reader. He doesn’t advocate for any particular dietary plan, but he does give the reader the tools necessary to make an informed choice and go from there—including the pros and cons of some popular dietary approaches.
He talks a lot about getting the most out of whatever we do choose to—managing appetite, mitigating adaptation, maximizing adherence, optimizing absorption of nutrients, and so forth.
The book does also touch on things like exercise and stress management, but diet is always center-stage and is the main topic of the book.
The style is—as promised by the title—simple. However, this simply means that he avoids unnecessary jargon and explains any necessary terms along the way. As for backing up claims with science, there are 22 pages of references, which is always a good sign.
Bottom line: if you’d like a simple, practical guide to eating for metabolic health, this book will start you off on a good footing.
Click here to check out Metabolism Made Simple, and give your metabolic health a boost!
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Eat To Beat Cancer
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Controlling What We Can, To Avoid Cancer
Every time a cell in our body is replaced, there’s a chance it will be cancerous. Exactly what that chance is depends on very many factors. Some of them we can’t control; others, we can.
Diet is a critical, modifiable factor
We can’t choose, for example, our genes. We can, for the most part, choose our diet. Why “for the most part”?
- Some people live in a food desert (the Arctic Circle is a good example where food choices are limited by supply)
- Some people have dietary restrictions (whether by health condition e.g. allergy, intolerance, etc or by personal-but-unwavering choice, e.g. vegetarian, vegan, kosher, halal, etc)
But for most of us, most of the time, we have a good control over our diet, and so that’s an area we can and should focus on.
Choose your animal protein wisely
If you are vegan, you can skip this section. If you are not, then the short version is:
- Fish: almost certainly fine
- Poultry: the jury is out; data is leaning towards fine, though
- Red meat: significantly increased cancer risk
- Processed meat: significantly increased cancer risk
For more details (and a run-down on the science behind the above super-summarized version):
- Do We Need Animal Products To Be Healthy? ← A mythbuster article that outlines many health properties (good and bad) of animal products
- The Whys and Hows of Cutting Meats Out Of Your Diet ← A life-hack article about acting on that information
Skip The Ultra-Processed Foods
Ok, so this one’s probably not a shocker in its simplest form:
❝Studies are showing us is that not only do the ultraprocessed foods increase the risk of cancer, but that after a cancer diagnosis such foods increase the risk of dying❞
Source: Is there a connection between ultraprocessed food and cancer?
There’s an unfortunate implication here! If you took the previous advice to heart and cut out [at least some] meat, and/but then replaced that with ultra-processed synthetic meat, then this was not a great improvement in cancer risk terms.
Ultra-processed meat is worse than unprocessed, regardless of whether it was from an animal or was synthetic.
In other words: if you buy textured soy pieces (a common synthetic meat), it pays to look at the ingredients, because there’s a difference between:
- INGREDIENTS: SOY
- INGREDIENTS: Rehydrated Textured SOY Protein (52%), Water, Rapeseed Oil, SOY Protein Concentrate, Seasoning (SULPHITES) (Dextrose, Flavourings, Salt, Onion Powder, Food Starch Modified, Yeast Extract, Colour: Red Iron Oxide), SOY Leghemoglobin, Fortified WHEAT Flour (WHEAT Flour, Calcium Carbonate, Iron, Niacin, Thiamin), Bamboo Fibre, Methylcellulose, Tomato Purée, Salt, Raising Agent: Ammonium Carbonates
Now, most of those original base ingredients are/were harmless per se (as are/were the grapes in wine—before processing into alcohol), but it has clearly been processed to Hell and back to do all that.
Choose the one that just says “soy”. Or eat soybeans. Or other beans. Or lentils. Really there are a lot of options.
About soy, by the way…
There is (mostly in the US, mostly funded by the animal agriculture industry) a lot of fearmongering about soy. Which is ironic, given the amount of soy that is fed to livestock to be fed to humans, but it does bear addressing:
❝Soy foods are safe for all cancer patients and are an excellent source of plant protein. Studies show soy may improve survival after breast cancer❞
Source: Food risks and cancer: What to avoid
(obviously, if you have a soy allergy then you should not consume soy—for most people, the above advice stands, though)
Advanced Glycation End-Products
These (which are Very Bad™ for very many things, including cancer) occur specifically as a result of processing animal proteins and fats.
Note: not even necessarily ultra-processing, just processing can do it. But ultra-processing is worse. What’s the difference, you wonder?
The difference between “ultra-processed” and just “processed”:
- Your average hotdog has been ultra-processed. It’s not only usually been changed with many artificial additives, it’s also been through a series of processes (physical and chemical) and ends up bearing little relation to the creature it came from.
- Your bacon (that you bought fresh from your local butcher, not a supermarket brand of unknown provenance, and definitely not the kind that might come on the top of frozen supermarket pizza) has been processed. It’s undergone a couple of simple processes on its journey “from farm to table”. Remember also that when you cook it, that too is one more process (and one that results in a lot of AGEs).
Read more: What’s so bad about AGEs?
Note if you really don’t want to cut out certain foods, changing the way you cook them (i.e., the last process your food undergoes before you eat it) can also reduce AGES:
Advanced Glycation End Products in Foods and a Practical Guide to Their Reduction in the Diet
Get More Fiber
❝The American Institute for Cancer Research shows that for every 10-gram increase in fiber in the diet, you improve survival after cancer diagnosis by 13%❞
Source: Plant-based diet is encouraged for patients with cancer
Yes, that’s post-diagnosis, but as a general rule of thumb, what is good/bad for cancer when you have it is good/bad for cancer beforehand, too.
If you’re thinking that increasing your fiber intake means having to add bran to everything, happily there are better ways:
Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)
Enjoy!
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Metabolical – by Dr. Robert Lustig
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.
The premise of this book itself is not novel: processed food is bad, food giants lie to us, and eating better makes us less prone to disease (especially metabolic disease).
What this book does offer that’s less commonly found is a comprehensive guide, a walkthrough of each relevant what and why and how, with plenty of good science and practical real-world examples.
In terms of unique selling points, perhaps the greatest strength of this book is its focus on two things in particular that affect many aspects of health: looking after our liver, and looking after our gut.
The style is… A little dramatic perhaps, but that’s just the style; there’s no hyperbole, he is stating well-established scientific facts.
Bottom line: very much of chronic disease would be a lot less diseasey if we all ate with these aspects of our health in mind. This book’s a comprehensive guide to that.
Click here to check out Metabolical, and let food be thy medicine!
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Cashew & Chickpea Balti
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When it comes to curries, the humble balti is perhaps the best when you don’t have all day to let something simmer. Filled with healthful spices, this one also comes complete with lots of fiber as well as healthy proteins and fats, with most of its calories coming from the nuts themselves, and the haricot paste base makes for a deliciously creamy curry without having to add anything unhealthy.
You will need
- 1 cup cashews, soaked in warm water for at least 5 minutes, and drained (if allergic, omit)
- 1 can chickpeas (keep the water)
- 1 can haricot beans (keep the water)
- 1 can crushed tomatoes
- 2 medium (or 3 small) red onions, sliced
- red or green chilis, quantity per your preference re heat, chopped
- ½ bulb garlic, crushed
- ½ oz fresh ginger, peeled and finely chopped
- 1 tbsp tomato paste
- 1 tbsp garam masala
- 1 tbsp ground coriander
- 1 tbsp black pepper, coarse ground
- 2 tsp turmeric
- 1 tsp mustard seeds (if allergic, omit)
- 1 tsp sweet cinnamon
- 1 tsp coriander seeds
- ½ tsp MSG or 1 tsp low-sodium salt
- Avocado oil, for frying (extra virgin olive-oil, or cold-pressed coconut oil, are fine alternatives)
- Garnish: handful fresh cilantro, chopped (or parsley, if you have the “cilantro tastes like soap” gene)
Method
(we suggest you read everything at least once before doing anything)
1) Heat a little oil in a large sauté pan (we’re going to need space to work; a large wok is traditional but a sauté pan is convenient), and add the garlic, ginger, mustard seeds, and coriander seeds, stirring for about 2 minutes, then add the onions and chilis, stirring for another 3 minutes. The onions and chilis won’t be fully cooked yet, but that’s fine, we just needed to get them started.
2) Add the crushed tomatoes, stirring them in, and when they get to temperature, turn the heat down to a simmer.
3) Add the chickpeas to the pan, but separately put the chickpea water into a high-speed blender.
4) Add the haricot beans, including the water they came in, to the high-speed blender, as well as the tomato paste and the remaining spices (including the MSG or salt), and blend on high until smooth. Add the curry paste (that’s what you’ve just made in the blender) to the pan, and stir in well.
5) Add the cashews, stirring in well. Taste, and adjust any spices if necessary for your liking. If the onions still aren’t fully cooked, let them simmer until they are, but it shouldn’t take long.
10almonds tip: if perchance you made it too spicy, you can add a little lime juice and the acidity will counteract the heat. Adding lemon juice, lime juice, or some kind of vinegar (depending on what works with the flavor profile of your recipe) is a good last resort to have up your sleeve for fixing a dish that got too spicy.
6) Add the garnish, and serve—we recommend serving it with our Tasty Versatile Rice, but any carb is fine.
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Why You Should Diversify Your Nuts!
- Three Daily Servings of Beans?
- Cashew Nuts vs Coconut – Which is Healthier?
- What Matters Most For Your Heart?
- Our Top 5 Spices: How Much Is Enough For Benefits? ← we hit 5/5 again today!
Take care!
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You can thaw and refreeze meat: five food safety myths busted
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This time of year, most fridges are stocked up with food and drinks to share with family and friends. Let’s not make ourselves and our guests sick by getting things wrong when preparing and serving food.
As the weather warms up, so does the environment for micro-organisms in foods, potentially allowing them to multiply faster to hazardous levels. So put the drinks on ice and keep the fridge for the food.
But what are some of those food safety myths we’ve long come to believe that aren’t actually true?
Myth 1: if you’ve defrosted frozen meat or chicken you can’t refreeze it
From a safety point of view, it is fine to refreeze defrosted meat or chicken or any frozen food as long as it was defrosted in a fridge running at 5°C or below. Some quality may be lost by defrosting then refreezing foods as the cells break down a little and the food can become slightly watery.
Another option is to cook the defrosted food and then divide into small portions and refreeze once it has stopped steaming. Steam in a closed container leads to condensation, which can result in pools of water forming. This, combined with the nutrients in the food, creates the perfect environment for microbial growth. So it’s always best to wait about 30 minutes before refrigerating or freezing hot food.
Plan ahead so food can be defrosted in the fridge, especially with large items such as a frozen turkey or roll of meat. If left on the bench, the external surface could be at room temperature and micro-organisms could be growing rapidly while the centre of the piece is still frozen!
Myth 2: Wash meat before you prepare and/or cook it
It is not a good idea to wash meats and poultry when preparing for cooking. Splashing water that might contain potentially hazardous bacteria around the kitchen can create more of a hazard if those bacteria are splashed onto ready-to-eat foods or food preparation surfaces.
It is, however, a good idea to wash fruits and vegetables before preparing and serving, especially if they’re grown near or in the ground as they may carry some dirt and therefore micro-organisms.
This applies particularly to foods that will be prepared and eaten without further cooking. Consuming foods raw that traditionally have been eaten cooked or otherwise processed to kill pathogenic micro-organisms (potentially deadly to humans) might increase the risk of food poisoning.
Fruit, salad, vegetables and other ready-to-eat foods should be prepared separately, away from raw meat, chicken, seafood and other foods that need cooking.
Myth 3: Hot food should be left out to cool completely before putting it in the fridge
It’s not OK to leave perishable food out for an extended time or overnight before putting it in the fridge.
Micro-organisms can grow rapidly in food at temperatures between 5° and 60°C. Temperature control is the simplest and most effective way of controlling the growth of bacteria. Perishable food should spend as little time as possible in the 5-60°C danger zone. If food is left in the danger zone, be aware it is potentially unsafe to eat.
Hot leftovers, and any other leftovers for that matter, should go into the fridge once they have stopped steaming to reduce condensation, within about 30 minutes.
Large portions of hot food will cool faster if broken down into smaller amounts in shallow containers. It is possible that hot food such as stews or soup left in a bulky container, say a two-litre mixing bowl (versus a shallow tray), in the fridge can take nearly 24 hours to cool to the safe zone of less than 5°C.
Myth 4: If it smells OK, then it’s OK to eat
This is definitely not always true. Spoilage bacteria, yeasts and moulds are the usual culprits for making food smell off or go slimy and these may not make you sick, although it is always advisable not to consume spoiled food.
Pathogenic bacteria can grow in food and not cause any obvious changes to the food, so the best option is to inhibit pathogen growth by refrigerating foods.
Myth 5: Oil preserves food so it can be left at room temperature
Adding oil to foods will not necessarily kill bugs lurking in your food. The opposite is true for many products in oil if anaerobic micro-organisms, such as Clostridium botulinum (botulism), are present in the food. A lack of oxygen provides perfect conditions for their growth.
Outbreaks of botulism arising from consumption of vegetables in oil – including garlic, olives, mushrooms, beans and hot peppers – have mostly been attributed to the products not being properly prepared.
Vegetables in oil can be made safely. In 1991, Australian regulations stipulated that this class of product (vegetables in oil) can be safely made if the pH (a measure of acid) is less than 4.6. Foods with a pH below 4.6 do not in general support the growth of food-poisoning bacteria including botulism.
So keep food out of the danger zone to reduce your guests’ risk of getting food poisoning this summer. Check out other food safety tips and resources from CSIRO and the Food Safety Information Council, including testing your food safety knowledge.
Cathy Moir, Team leader, Microbial and chemical sciences, Food microbiologist and food safety specialist, CSIRO
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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