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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These Top Few Things Make The Biggest Difference To Health
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The Best Few Interventions For The Best Health
Writer’s note: I was going to do something completely different for today (so that can go out another week now), but when reflecting on my own “what should I focus on in the new year?” (in terms of my own personal health goals and such) it occured to me that I should look back on the year’s articles, to take our own advice myself, and see what most important things I should make sure to focus on.
In so doing for myself, it occured to me that you, our subscribers who like condensed information and simple interventions for big positive effects, might also find value in a similar once-over. And so, today’s main feature was born!
Sometimes at 10almonds we talk about “those five things that affect everything”. They are:
- Good diet
- Good exercise
- Good sleep
- Not drinking
- Not smoking
If we were to add a sixth in terms of things that make a huge difference, it would be “manage stress effectively” and a seventh, beyond the scope of our newsletter, would be “don’t be socioeconomically disadvantaged” (e.g. poor, and/or part of some disprivileged minority group).
But as for those five we listed, it still leaves the question: what are the few most effective things we can do to improve them? Where can we invest our time/energy/effort for greatest effect?
Good diet
Best current science consistently recommends the Mediterranean Diet:
The Mediterranean Diet: What Is It Good For?
But it can be tweaked for specific desired health considerations:
Four Ways To Upgrade The Mediterranean Diet
Other most-effective dietary tweaks that impact a lot of other areas of health include looking after your gut health and looking after your blood sugars:
Making Friends With Your Gut (You Can Thank Us Later)
and
“Let Them Eat Cake”, She Said (10 Ways To Balance Blood Sugars)
Good exercise
Most exercise is good, but two of the most beneficial things that are (for most people) easy to implement are walking, and High-Intensity Interval Training:
How To Do HIIT (Without Wrecking Your Body)
Good sleep
This means quality and quantity! We cannot skimp on either and expect good health:
Why You Probably Need More Sleep
and as for quality,
The Head-To-Head Of Google and Apple’s Top Apps For Getting Your Head Down
Not drinking
According to the World Health Organization, the only safe amount of alcohol is zero.
See also:
Can We Drink To Good Health? (e.g. Red Wine & Heart Health)
and
Not smoking
We haven’t done a main feature on this! It’s probably not really necessary, as it’s not very contentious to say “smoking is bad for everything”.
WHO | Tobacco kills up to half its users who don’t quit
However, as a side-note, while cannabis is generally recognised as not as harmful as tobacco-based products, it has some fairly major drawbacks too. For some people, the benefits (e.g. pain relief) may outweigh the risks, though:
Final thoughts
Not sure where to start? We suggest this order of priorities, unless you have a major health condition that makes something else a higher priority:
- If you smoke, stop
- If you drink, reduce, or ideally stop
- Improve your diet
About that diet…
- Worry less about what to exclude, and instead focus on adding more variety of fruit/veg
- See also: Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)
- That said, if you’re looking for things to cut, sugar is a top candidate (and red meat is in clear second place albeit some way below)
When it comes to exercise, get your 10,000 daily steps in (actually, science says 8,000 steps is fine), and consider adding HIIT per our above article, when you feel like adding that in. As for that about the steps:
When it comes to sleep, if you’re taking care of the above things, and set a regular early wake-up time that you do not deviate from, then this will probably take care of itself, if you don’t have a sleep-inconvenient lifestyle (e.g. shift work, just had a baby, etc) or a sleep disorder.
For further pointers, see: 10 Tips for Better Sleep: Starting In The Morning
Take care!
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Strong Curves – by Bret Contreras & Kellie Davis
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The title (and subtitle) is, of course, an appeal to vanity. However, the first-listed author is well-known as “The Glute Guy”, and he takes this very seriously, not just for aesthetic reasons but also for practical reasons.
After all, when it comes to posture and stability, a lot rests on our hips, and hips, well, they rest on our butt and thighs. What’s more, the gluteus maximus is the largest muscle in the human body, so really, is it a good one to neglect? Probably not, and your lower back will definitely thank you for keeping your glutes in good order, too.
That said, while it’s a focal point, it’s not the be-all-and-end-all, and this book does cover the whole body.
The book takes the reader from “absolute beginner” to “could compete professionally”, with clearly-illustrated and well-described exercises. We also get a strong “crash course” in the relevant anatomy and physiology, and even a chapter on nutrition, which is a lot better than a lot of exercise books’ efforts in that regard.
For those who like short courses, this book has several progressive 12-week workout plans that take the reader from a very clear starting point to a very clear goal point.
Another strength of the book is that while a lot of exercises expect (and require) access to a gym, there are also whole sections of “at home / bodyweight” exercises, including 12-week workout plans for such, as described above.
Bottom line: there’s really nothing bad that this reviewer can find to say about this one—highly recommendable to any woman who wants to get strong while keeping a feminine look.
Click here to check out Strong Curves, and rebuild your body, your way!
PS: at first glance, the cover art looks like an AI model; it’s not; that’s the co-author Kellie Davis, who also serves as the model through the book’s many photographic illustrations.
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The Distracted Mind – by Dr. Adam Gazzaley and Dr. Larry Rosen
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Yes, yes, we know, unplug once in a while. But what else do this highly-qualified pair of neuroscientists have to offer?
Rather than being a book for the sake of being a book, with lots of fluff and the usual advice about single-tasking, the authors start with a reframe:
Neurologically speaking, the hit of dopamine we get when looking for information is the exact same as the hit of dopamine that we, a couple of hundred thousand years ago, got when looking for nuts and berries.
- When we don’t find them, we become stressed, and search more.
- When we do find them, we are encouraged and search more nearby, and to the other side of nearby, and near around, to find more.
But in the case of information (be it useful information or celebrity gossip or anything in between), the Internet means that’s always available now.
So, we jitter around like squirrels, hopping from one to the next to the next.
A strength of this book is where it goes from there. Specifically, what evidence-based practices will actually keep our squirrel-brain focused… and which are wishful thinking for anyone who lives in this century.
Bringing original research from their own labs, as well as studies taken from elsewhere, the authors present a science-based toolkit of genuinely useful resources for actual focus.
Bottom line: if you think you could really optimize your life if you could just get on track and stay on track, this is the book for you.
Click here to check out The Distracted Mind, and get yours to focus!
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Gravitas – by Caroline Goyder
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A no-nonsense guide to (more than!) public speaking that isn’t just “tell jokes in your speech and imagine the audience naked”.
Because this isn’t just about speech-writing or speech delivery, so much as giving you important life skills. The kind that weren’t taught in school, but that nevertheless make a huge impact on success… whether you’re giving a presentation or hosting a party or negotiating a deal or just attending a social event. Or making a phonecall, even.
Whereas a lot of books of this kind treat “the audience” as a nebulous and purely responsive passive crowd of extras, Goyder does better. People are individuals, even if they’re all facing the same way for a moment. She works with that! She also teaches how to deal with not just hecklers, but also simply those people who sap your confidence and find fault with you and anything you do or say.b
Bottom line is: if you for whatever reason communicate with people, and would like them to think better of you, this is the book for you.
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The Smartest Way To Get To 20% Body Fat (Or 10% For Men)
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20% body fat for women, or 10% for men, are suggested in this video as ideal levels of adiposity for most people. While we certainly do have wiggle-room in either direction, going much higher than that can create a metabolic strain, and going much lower than that can cause immune dysfunction, organ damage, brittle bones, and more.
This video assumes you want to get down to those figures. If you want to go up to those figures because you are currently underweight, check out: How To Gain Weight (Healthily!)
Look at the small picture
The main trick, we are told, is to focus on small, incremental changes rather than obsessing over long-term weight loss goals (e.g. 20% body fat for women, 10% for men).
Next, throw out what science shows doesn’t work, such as restrictive or extreme dieting:
- Restrictive dieting doesn’t work as the body will try to save you from starvation by storing extra fat and slowing your metabolism to make your fat reserves last longer
- Extreme dieting doesn’t work because no matter how compelling it is to believe “I’ll just lose it in this extreme way, then maintain my new lower weight”, the vast body of research shows that weight loss in this way will be regained quickly afterwards, and for a significant minority, may even end up putting more back on than was originally lost. In either case, you’ll have put your mind and body through the wringer for no long-term gain.
The recommendation comes in three parts:
- Shift your mindset: detach motivation from timelines and vanity goals; focus instead on lifelong health and sustainable habits.
- Use an analytical approach: apply engineering principles: collect honest data and identify bottlenecks. Track food intake consistently, even during slip-ups, to identify areas for improvement. You remember the whole “it doesn’t count if it’s from someone else’s plate” thing? These days with food trackers, a lot of people fall into “it doesn’t count if I don’t record it”, but a head-in-the-sand approach will not get you where you want to be.
- Tackle bottlenecks incrementally: focus on one small, impactful change at a time (e.g. reducing soda intake). This way, you can build habits gradually to prevent willpower burnout and sustain your progress.
As an example of how this looked for Viva (in the video):
- > 30% body fat stage: she focused on reducing processed foods and portion sizes.
- 29–25% body fat stage: she prioritized nutrient-dense foods and reduced dining out.
- 24–20% body fat stage: she added strength training, improved sleep, and addressed her cravings and energy levels.
In short: look at the small picture; adjust your habits mindfully, keep a track of things, see what needs improvement and improve it, and don’t try to speedrun weight loss; just focus on what you are tangibly doing to keep things heading in the right direction, and you’ll get there 1% at a time.
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:
Lose Weight, But Healthily ← our own guide, which is also consistent with the advice above, and talks about some specific things to pay attention to that weren’t mentioned in the video
Take care!
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How often should you really weigh yourself?
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Few topics are more debated in health than the value of the humble bathroom scale. Some experts advocate daily self-weigh-ins to promote accountability for weight management, particularly when we’re following a diet and exercise program to lose weight.
Others suggest ditching self-weigh-ins altogether, arguing they can trigger negative psychological responses and unhealthy behaviours when we don’t like, or understand, the number we see on the scale.
Many, like me, recommend using scales to weigh yourself weekly, even when we’re not trying to lose weight. Here’s why.
Diva Plavalaguna/Pexels 1. Weighing weekly helps you manage your weight
Research confirms regular self-weighing is an effective weight loss and management strategy, primarily because it helps increase awareness of our current weight and any changes.
A systematic review of 12 studies found participants who weighed themselves weekly or daily over several months lost 1–3 BMI (body mass index) units more and regained less weight than participants who didn’t weight themselves frequently. The weight-loss benefit was evident with weekly weighing; there was no added benefit with daily weighing.
Weighing regularly means we know when our weight changes. Andres Ayrton/Pexels Self-weigh-ins are an essential tool for weight management as we age. Adults tend to gain weight progressively through middle age. While the average weight gain is typically between 0.5–1kg per year, this modest accumulation of weight can lead to obesity over time. Weekly weighing and keeping track of the results helps avoid unnecessary weight gain.
Tracking our weight can also help identify medical issues early. Dramatic changes in weight can be an early sign of some conditions, including problems with our thyroid, digestion and diabetes.
2. Weekly weighing accounts for normal fluctuations
Our body weight can fluctuate within a single day and across the days of the week. Studies show body weight fluctuates by 0.35% within the week and it’s typically higher after the weekend.
Daily and day-to-day body weight fluctuations have several causes, many linked to our body’s water content. The more common causes include:
The type of food we’ve consumed
When we’ve eaten a dinner higher in carbohydrates, we’ll weigh more the next day. This change is a result of our bodies temporarily carrying more water. We retain 3–4 grams of water per gram of carbohydrate consumed to store the energy we take from carbs.
Our water content also increases when we consume foods higher in salt. Our bodies try to maintain a balance of sodium and water. When the concentration of salt in our bloodstream increases, a mechanism is triggered to restore balance by retaining water to dilute the excess salt.
The morning after a big pasta dinner, we’ll carry more water weight. Dana Tentis/Pexels Our food intake
Whether it’s 30 grams of nuts or 65 grams of lean meat, everything we eat and drink has weight, which increases our body weight temporarily while we digest and metabolise what we’ve consumed.
Our weight also tends to be lower first thing in the morning after our food intake has been restricted overnight and higher in the evening after our daily intake of food and drinks.
Exercise
If we weigh ourselves at the gym after a workout, there’s a good chance we’ll weigh less due to sweat-induced fluid loss. The amount of water lost varies depending on things like our workout intensity and duration, the temperature and humidity, along with our sweat rate and hydration level. On average, we lose 1 litre of sweat during an hour of moderate-intensity exercise.
Hormonal changes
Fluctuations in hormones within your menstrual cycle can also affect fluid balance. Women may experience fluid retention and temporarily gain 0.5–2kg of weight at this time. Specifically, the luteal phase, which represents the second half of a woman’s cycle, results in a shift of fluid from your blood plasma to your cells, and bloating.
Most of our weight fluctuations are water-related. Engin Akyurt/Unsplash Bowel movements
Going to the bathroom can lead to small but immediate weight loss as waste is eliminated from the body. While the amount lost will vary, we generally eliminate around 100 grams of weight through our daily bowel movements.
All of these fluctuations are normal, and they’re not indicative of significant changes in our body fat or muscle mass. However, seeing these fluctuations can lead to unnecessary stress and a fixation with our weight.
3. Weekly weighing avoids scale obsession and weight-loss sabotage
Weighing too frequently can create an obsession with the number on the scales and do more harm than good.
Often, our reaction when we see this number not moving in the direction we want or expect is to further restrict our food intake or embark on fad dieting. Along with not being enjoyable or sustainable, fad diets also ultimately increase our weight gain rather than reversing it.
This was confirmed in a long-term study comparing intentional weight loss among more than 4,000 twins. The researchers found the likelihood of becoming overweight by the age of 25 was significantly greater for a twin who dieted to lose 5kg or more. This suggests frequent dieting makes us more susceptible to weight gain and prone to future weight gain.
So what should you do?
Weighing ourselves weekly gives a more accurate measure of our weight trends over time.
Aim to weigh yourself on the same day, at the same time and in the same environment each week – for example, first thing every Friday morning when you’re getting ready to take a shower, after you’ve gone to the bathroom, but before you’ve drunk or eaten anything.
Weigh yourself at the same time on the same day of the week. Alexanderstock23/Shutterstock Use the best quality scales you can afford. Change the batteries regularly and check their accuracy by using a “known” weight – for example, a 10kg weight plate. Place the “known” weight on the scale and check the measurement aligns with the “known” weight.
Remember, the number on the scale is just one part of health and weight management. Focusing solely on it can overshadow other indicators, such as how your clothes fit. It’s also essential to pay equal attention to how we’re feeling, physically and emotionally.
Stop weighing yourself – at any time interval – if it’s triggering anxiety or stress, and get in touch with a health-care professional to discuss this.
At the Boden Group, Charles Perkins Centre, we are studying the science of obesity and running clinical trials for weight loss. You can register here to express your interest.
Nick Fuller, Charles Perkins Centre Research Program Leader, University of Sydney
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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