‘Naked carbs’ and ‘net carbs’ – what are they and should you count them?

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According to social media, carbs come in various guises: naked carbs, net carbs, complex carbs and more.

You might be wondering what these terms mean or if all carbs are really the same. If you are into “carb counting” or “cutting carbs”, it’s important to make informed decisions about what you eat.

What are carbs?

Carbohydrates, or “carbs” for short, are one of the main sources of energy we need for brain function, muscle movement, digestion and pretty much everything our bodies do.

There are two classifications of carbs, simple and complex. Simple carbs have one or two sugar molecules, while complex carbs are three or more sugar molecules joined together. For example, table sugar is a simple carb, but starch in potatoes is a complex carb.

All carbs need to be broken down into individual molecules by our digestive enzymes to be absorbed. Digestion of complex carbs is a much slower process than simple carbs, leading to a more gradual blood sugar increase.

Fibre is also considered a complex carb, but it has a structure our body is not capable of digesting. This means we don’t absorb it, but it helps with the movement of our stool and prevents constipation. Our good gut bacteria also love fibre as they can digest it and use it for energy – important for a healthy gut.

What about ‘naked carbs’?

“Naked carbs” is a popular term usually used to refer to foods that are mostly simple carbs, without fibre or accompanying protein or fat. White bread, sugary drinks, jams, sweets, white rice, white flour, crackers and fruit juice are examples of these foods. Ultra-processed foods, where the grains are stripped of their outer layers (including fibre and most nutrients) leaving “refined carbs”, also fall into this category.

One of the problems with naked carbs or refined carbs is they digest and absorb quickly, causing an immediate rise in blood sugar. This is followed by a rapid spike in insulin (a hormone that signals cells to remove sugar from blood) and then a drop in blood sugar. This can lead to hunger and cravings – a vicious cycle that only gets worse with eating more of the same foods.

donut with sprinkles in close up
Naked carbs can make blood sugars spike then crash.
Pexels/Alexander Grey

What about ‘net carbs’?

This is another popular term tossed around in dieting discussions. Net carbs refer to the part of the carb food that we actually absorb.

Again, fibre is not easily digestible. And some carb-rich foods contain sugar alcohols, such as sweeteners (like xylitol and sorbitol) that have limited absorption and little to no effect on blood sugar. Deducting the value of fibre and sugar alcohols from the total carbohydrate content of a food gives what’s considered its net carb value.

For example, canned pear in juice has around 12.3g of “total carbohydrates” per 100g, including 1.7g carb + 1.7g fibre + 1.9g sugar alcohol. So its net carb is 12.3g – 1.7g – 1.9g = 8.7g. This means 8.7g of the 12.3g total carbs impacts blood sugar.

The nutrition labels on packaged foods in Australia and New Zealand usually list fibre separately to carbohydrates, so the net carbs have already been calculated. This is not the case in other countries, where “total carbohydrates” are listed.

Does it matter though?

Whether or not you should care about net or naked carbs depends on your dietary preferences, health goals, food accessibility and overall nutritional needs. Generally speaking, we should try to limit our consumption of simple and refined carbs.

The latest World Health Organization guidelines recommend our carbohydrate intake should ideally come primarily from whole grains, vegetables, fruits and pulses, which are rich in complex carbs and fibre. This can have significant health benefits (to regulate hunger, improve cholesterol or help with weight management) and reduce the risk of conditions such as heart disease, obesity and colon cancer.

In moderation, naked carbs aren’t necessarily bad. But pairing them with fats, protein or fibre can slow down the digestion and absorption of sugar. This can help to stabilise blood sugar levels, prevent spikes and crashes and support personal weight management goals. If you’re managing diabetes or insulin resistance, paying attention to the composition of your meals, and the quality of your carbohydrate sources is essential.

A ketogenic (high fat, low carb) diet typically restricts carb intake to between 20 and 50g each day. But this carb amount refers to net carbs – so it is possible to eat more carbs from high-fibre sources.

salad with quinoa and vegetables
Choose complex carbohydrates with lots of fibre.
Shutterstock

Some tips to try

Some simple strategies can help you get the most out of your carb intake:

  • reduce your intake of naked carbs and foods high in sugar and white flour, such as white bread, table sugar, honey, lollies, maple syrup, jam, and fruit juice

  • opt for protein- and fibre-rich carbs. These include oats, sweet potatoes, nuts, avocados, beans, whole grains and broccoli

  • if you are eating naked carbs, dress them up with some protein, fat and fibre. For example, top white bread with a nut butter rather than jam

  • if you are trying to reduce the carb content in your diet, be wary of any symptoms of low blood glucose, including headaches, nausea, and dizziness

  • working with a health-care professional such as an accredited practising dietitian or your GP can help develop an individualised diet plan that meets your specific needs and goals.

Correction: this article has been updated to indicate how carbohydrates are listed on food nutrition labels in Australia and New Zealand.The Conversation

Saman Khalesi, Senior Lecturer and Discipline Lead in Nutrition, School of Health, Medical and Applied Sciences, CQUniversity Australia; Anna Balzer, Lecturer, Medical Science School of Health, Medical and Applied Sciences, CQUniversity Australia; Charlotte Gupta, Postdoctoral research fellow, CQUniversity Australia; Chris Irwin, Senior Lecturer in Nutrition and Dietetics, School of Health Sciences & Social Work, Griffith University, and Grace Vincent, Senior Lecturer, Appleton Institute, CQUniversity Australia

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

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  • Healthy Chocolate Fudge Energy Bites

    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.

    While these are quite high-calorie, they’re also high in protein, and the fiber and healthy fats flatten the blood sugar curve:

    You will need

    • 1 cup peanut butter
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    (we suggest you read everything at least once before doing anything)

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    Want to learn more?

    For those interested in some of the science of what we have going on today:

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  • I’ve been sick. When can I start exercising again?

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    You’ve had a cold or the flu and your symptoms have begun to subside. Your nose has stopped dripping, your cough is clearing and your head and muscles no longer ache.

    You’re ready to get off the couch. But is it too early to go for a run? Here’s what to consider when getting back to exercising after illness.

    Ketut Subiyanto/Pexels

    Exercise can boost your immune system – but not always

    Exercise reduces the chance of getting respiratory infections by increasing your immune function and the ability to fight off viruses.

    However, an acute bout of endurance exercise may temporarily increase your susceptibility to upper respiratory infections, such as colds and the flu, via the short-term suppression of your immune system. This is known as the “open window” theory.

    A study from 2010 examined changes in trained cyclists’ immune systems up to eight hours after two-hour high-intensity cycling. It found important immune functions were suppressed, resulting in an increased rate of upper respiratory infections after the intense endurance exercise.

    So, we have to be more careful after performing harder exercises than normal.

    Can you exercise when you’re sick?

    This depends on the severity of your symptoms and the intensity of exercise.

    Mild to moderate exercise (reducing the intensity and length of workout) may be OK if your symptoms are a runny nose, nasal congestion, sneezing and minor sore throat, without a fever.

    Exercise may help you feel better by opening your nasal passages and temporarily relieving nasal congestion.

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    However, if you try to exercise at your normal intensity when you are sick, you risk injury or more serious illness. So it’s important to listen to your body.

    If your symptoms include chest congestion, a cough, upset stomach, fever, fatigue or widespread muscle aches, avoid exercising. Exercising when you have these symptoms may worsen the symptoms and prolong the recovery time.

    If you’ve had the flu or another respiratory illness that caused a high fever, make sure your temperature is back to normal before getting back to exercise. Exercising raises your body temperature, so if you already have a fever, your temperature will become high quicker, which makes you sicker.

    If you have COVID or other contagious illnesses, stay at home, rest and isolate yourself from others.

    When you’re sick and feel weak, don’t force yourself to exercise. Focus instead on getting plenty of rest. This may actually shorten the time it takes to recover and resume your normal workout routine.

    I’ve been sick for a few weeks. What has happened to my strength and fitness?

    You may think taking two weeks off from training is disastrous, and worry you’ll lose the gains you’ve made in your previous workouts. But it could be just what the body needs.

    It’s true that almost all training benefits are reversible to some degree. This means the physical fitness that you have built up over time can be lost without regular exercise.

    To study the effects of de-training on our body functions, researchers have undertaken “bed rest” studies, where healthy volunteers spend up to 70 days in bed. They found that V̇O₂max (the maximum amount of oxygen a person can use during maximal exercise, which is a measure of aerobic fitness) declines 0.3–0.4% a day. And the higher pre-bed-rest V̇O₂max levels, the larger the declines.

    In terms of skeletal muscles, upper thigh muscles become smaller by 2% after five days of bed rest, 5% at 14 days, and 12% at 35 days of bed rest.

    Muscle strength declines more than muscle mass: knee extensor muscle strength gets weaker by 8% at five days, 12% at 14 days and more than 20% after around 35 days of bed rest.

    This is why it feels harder to do the same exercises after resting for even five days.

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    In bed rest studies, participants don’t get up. But they do in real life. Olly/Pexels

    But in bed rest studies, physical activities are strictly limited, and even standing up from a bed is prohibited during the whole length of a study. When we’re sick in bed, we have some physical activities such as sitting on a bed, standing up and walking to the toilet. These activities could reduce the rate of decreases in our physical functions compared with study participants.

    How to ease back into exercise

    Start with a lower-intensity workout initially, such as going for a walk instead of a run. Your first workout back should be light so you don’t get out of breath. Go low (intensity) and go slow.

    Gradually increase the volume and intensity to the previous level. It may take the same number of days or weeks you rested to get back to where you were. If you were absent from an exercise routine for two weeks, for example, it may require two weeks for your fitness to return to the same level.

    If you feel exhausted after exercising, take an extra day off before working out again. A day or two off from exercising shouldn’t affect your performance very much.

    Ken Nosaka, Professor of Exercise and Sports Science, Edith Cowan University

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

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  • Osteoporosis & Exercises: Which To Do (And Which To Avoid)

    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.

    It’s Q&A Day at 10almonds!

    Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!

    In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!

    As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!

    So, no question/request too big or small

    ❝Any idea about the latest research on the most effective exercises for osteoporosis?❞

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    5 Isometric Exercises for Osteoporosis (with textual explanations and illustrative GIFs)

    You might also like this bone-strengthening exercise routine from corrective exercise specialist Kendra Fitzgerald:

    Enjoy!

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  • The Biggest Cause Of Back Pain

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    Will Harlow, specialist over-50s physiotherapist, shares the most common cause (and its remedy) in this video:

    The seat of the problem

    The issue (for most people, anyway) is not in the back itself, nor the core in general, but rather, in the glutes. That is to say: the gluteus maximus, medius, and minimus. They assist in bending forwards (collaborating half-and-half with your back muscles), and help control pelvic alignment while walking.

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

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  • How old’s too old to be a doctor? Why GPs and surgeons over 70 may need a health check to practise

    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.

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    When changes are proposed to health practitioner regulation, there is typically much media attention followed by a consultation and behind-the-scenes negotiation process. This issue is no different.

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    The proposals are open for public comment until October 4.

    Christopher Rudge, Law lecturer, University of Sydney

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

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  • Stop Self-Sabotage – by Dr. Judy Ho

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    A lot of books of this genre identify one particular kind of self-sabotage, for example, they might pick one out of:

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    Here we have a much more comprehensive approach to tackling the problem of unintentional self-sabotage. With a multi-vector method, of which all angles can be improved simultaneously, it becomes much less like “whack-a-mole”… And much more like everything actually getting into order and staying that way.

    The main approach here is CBT, but far beyond what most pop-psychology CBT books go for, with more techniques and resources.

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    Click here to check it out on Amazon today, and stop sabotaging yourself!

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