What Everyone Ought to Know about Fructose

Written by:

One of the hottest sweeteners on the market today is agave  (also known as agave nectar). Clever marketing touts that it has minimal impact on blood sugar (which is true), but does not give the full picture on this super harmful product. IT DRIVES ME NUTS. So many believe agave to be the perfect low-glycemic replacement for sugar in a healthful diet.

I am not one of those people. I have been pretty vocal in my crusade against agave.  I believe it is the enemy of good health because it has such a high concentration of fructose (way more than the commonly demonized high fructose corn syrup) and the artificial chemical processes used to manufacture it.

What Is Fructose?

Fructose is a simple sugar that occurs naturally in very small amounts in fruit and some vegetables. It is also the main sweetener in honey, agave syrup, and high-fructose corn syrup. Because of its structure, fructose adds sweetness with a much smaller impact on blood sugar than other simple sugars such as sucrose.

A Little Goes a Long Way

While fructose gives fruit its sweetness, however, it exists in fruits in very small amounts: a little goes a long way. When you eat whole foods like fruit, the fiber keeps you from overeating. However in processed liquid products such as agave nectar (and in high-fructose corn syrup), you have an extremely high concentration of fructose.

Historically, humans didn’t have add sweeteners to foods. Our ancestors ate fruit in season- and depending where they lived, they ate it abundantly. They did not over-consume fructose.  The human body can process these tiny amounts of fructose quite well. Unfortunately, fructose in HFCS and agave comes in extremely high amounts. HFCS is approximately 55 percent fructose.  Agave nectar is even higher in fructose than high fructose corn syrup – anywhere from 65- 90+ percent. (Tell me again why agave is seen as a “healthy” sweetener option??). Unfortunately, the human body is unable to process fructose at such high levels, and more and more studies are showing just how harmful large concentrations of fructose in the human diet can be.

  1. A 2012 UCLA study showed that a diet containing steadily high levels of fructose actually slowed brain function, hampering memory and learning.
  2. A 2010 Princeton University study demonstrated that fructose caused significant weight gain, increased levels of abdominal fat, and high triglycerides.
  3. A 2012 Duke University study showed that high fructose diets increased the risk of ATP depletion. ATP (adenosine triphosphate) is a co-enzyme necessary for cellular metabolism, and when it is depleted it may trigger liver injury including scarring,. Inflammation, and non-alcoholic fatty liver disease.
  4. The American Journal of Clinical Nutrition reports that, along with ATP deletion, high fructose consumption can cause metabolic syndrome because it generates uric acid, can cause dysfunction of the endothelium (the inner lining of blood vessels), can lead to the formation of fats (lipogenesis), and can cause oxidative stress and damage. They further report that fructose consumption may interfere with hormones that communicate satiety.

Fructose Intolerance

Some people have even more difficulty with fructose than the problems listed above. Some people are born lacking the necessary enzymes to break down fructose. This congenital condition, known as hereditary fructose intolerance, occurs when someone is born without the enzyme aldolase B. People with this condition causes the build-up of dangerous substances in the liver and throughout the body.

Symptoms of fructose intolerance occur early – typically in babies who consume foods or formula containing fructose. The disorder persists throughout life, and people with fructose intolerance need to avoid fructose-containing foods including processed foods, fruit, honey, table sugar, agave nectar, sodas, and sports drinks.  Consuming foods containing fructose can sustain damage to the liver and kidneys if they don’t eliminate the sugar from their diet.

Fructose Malabsorption

Another segment of the population may have a less serious condition known as fructose malabsorption. These people will have difficulty digesting foods that contain fructose, leading to gas, bloating, pain, and diarrhea.

Avoiding Fructose

If you don’t have fructose malabsorption or intolerance, chances are you can eat a little bit of fruit and your body will tolerate it just fine. In fact, fruit has many wonderful beauty properties including enzymes and vitamins. If you don’t have fructose intolerance or malabsorption, I recommend eating a little fruit on an empty stomach so it doesn’t get stuck behind a heavier food and begin to ferment in your body. I also suggest adding fruit to your glowing green smoothies to give it a hint of sweetness and lots more vitamins. Fruits are the most cleansing foods on the planet. But if you have fructose intolerance or fructose malabsorption issues, I recommend avoiding sweet fruit altogether, as well as honey, fruit juice and some of the sweeter vegetables such as beets and corn

I believe everyone should avoid foods containing artificially inflated levels of fructose vs glucose, or anything unnatural. This includes all processed foods and beverages containing cane/table sugar and high-fructose corn syrup, agave, soft drinks, fruit juice, and energy drinks.

Other high-fructose foods include:       

    • Beet sugar
    • Corn sugar
    • High-fructose corn syrup
    • Brown rice syrup
    • Agave
    • Brown sugar
    • Cane sugar
    • Date sugar
    • Fruit juice
    • Fruit sweetener
    • Grape syrup
    • Maple Syrup
    • Molasses
    • Polydextrose
    • Honey
    • Sorbitol
    • Turbinado

 

What Can You Eat?

As always, I recommend eating whole, natural, plant-based foods including dark leafy greens, whole grains, and raw nuts and seeds. All of these foods are safe, healthy foods to eat and contain little to no fructose. If you do need sweet, I recommend a little stevia or a sugar alcohol such as xylitol (consume moderately otherwise it can give you the runs).

Closing words: Avoid agave! Spread the word! Please share this! Hopefully one day it will get pulled out of raw food products and recipes and so-called “health” products once and for all.

 

This free blog is intended to be a source of inspiration to everyone around the world. We welcome your feedback through relevant, constructive, thoughtful comments. Please understand for legal reasons, I cannot answer specific/personal medical condition questions on the blog. For customer service issues or inquiries regarding purchases of any kind, go to http://support.kimberlysnyder.com. For all other questions or feedback, click here. For press inquires, email us here. Thank you for engaging and adding to the conversation!

47 Responses to “What Everyone Ought to Know about Fructose

  1. Hey Kimberly!

    I love your books, articles, and youtube videos. I am learning soo much and I love the radical change in my body inside and out, and my mind as well!

    My question is in reference to sugar substitutes. When I get the occasional desire for something sweet I am using Yukon Syrup? The internet has so many combating articles on it and I wondered what yours or anyone’s thoughts on this substitute were? I don’t want to have an Agave situation ahah. My mother is allergic to stevia. I made the Coconut macaroons from the recipe book last night. I used Yukon Syrup instead of Stevia or the coconut nectar/maple syrup and the macaroons turned out perfectly. I just hope i’m not using something terribly unhealthy inadvertently? Thank you!

  2. I had rapadura sugar and by process of elimination and numerous relentless tests including a Brain MRI and Neurologist Visits (AKA a lot of $$$) that the icepick headaches were from the rapadura.
    I switched to Coconut Sugar, and again through a processes of elimination I found out that the massive cramping I was having where I felt like I wanted to pass out from the pain was from the Coconut Sugar.
    I have been having stomach pains again over 6months down the path and thought what on earth is causing this ! Turns out that the Organic Drinking Chocolate powder I was putting on my Nespresso Caps (3 a day) has coconut sugar in it !!!! (which I didn’t realize)
    After doing some research it would probably appear that these products are extremely high in Fructose because they are completely unprocessed and my body can’t process such naturally occurring sugars
    So be mindful of these two sugars and any sudden change in your body

  3. Hi Kimberly,

    What is your view on what the “right” amount of sugar (natural, coming from fruits) is per day? Do you think there is a maximum amount someone should consume?

  4. In baking, what is a good substitute for agave nectar and or honey? I am currently using rice malt syrup (brown rice syrup) but you have also said that this is high in fructose.

  5. Hello, Kimberly:

    Congratulations on your wonderful new book. I purchased several copies as gifts for my favorite people.
    My question about sweeteners is this: What about TRUVIA, STEVIA IN THE RAW, OR some of the newer ones that just hit the supermarket shelves! I don’t care for the bitter taste of STEVIA, but the TRUVIA seemed to be less bitter. I’ve also tried the one you recommend (NuNaturals), in your RESOURCES SECTION, but that seems bitter to me as well. I even tried SWEET LEAF from the Health food store. But, I can’t seem to transition from “Sugar in the raw” to pure STEVIA. Can you recommend one that doesn’t leave a bitter after taste in drinks?!

    Thank you.
    Patty B.

    • I have found Natvia is alot nicer tasting as Stevia. The Natvia sweetener is still made from the Stevia plant but I find the taste is more pleasant & easier to change from sugar to Natvia. You can purchase it in tablet form as well as powder form for cooking, etc.

  6. Kimberly, Thank you so much for all of your great info and advice. I have been on you BDS for a year now and GLS for a month now and I am having incredible results following the “BUTTERFLY ” guidelines. Could you give me your take on the Master Cleanse Drink made up of water,cayenne, lemon. & organic 100% Maple Syrup? It is supposed to be very good for losing weight when done as a fast for 7-10 days. Thanks Cindy

  7. You provided now remarkable post i must confess. Nicely delivered details in this post, I prefer to discover this sort of writings. The grade of content is fine and also the result is wonderful.

  8. Hi Kimberly,

    I am interested to know what your thoughts are on organic coconut sugar, since I know you like coconut oil?

    Thanks!

  9. Hi Kimberley, love your blog, you are such an inspiration. I have fructose malabsorption as well as a few other problems which makes my stomach so super sensitive to so many things including any garlic, onion, some veg, most fruits, fermented veg, raw veg, juices, gluten, and sometimes just any food in general, etc etc etc. I have tried a lot of different diets but nothing has seemed to improve it too much but i am starting your detox next year and really want to stick at it but wondering if my stomach is so sensitive and reacts to the food(as it usually does with most foods), should i continue as eventually my stomach will not be so reactive and start to heal? Also do you do consultations at all?
    Thanks so much
    Katie

  10. Does anybody have any insight on whether it is alright to consume Goji berries/ground flaxseed with warm lemon water in the morning? If not, when is a good time to consume those items, if any? thanks

  11. Pingback: So Juicy »
  12. Thanks for the Agave info. I have read other places that it is unacceptable because of the chemicals used to process it. Recently I had organic Agave thinking that’s okay because undesirable chemicals would not be used. Is that true?

  13. I have metabolic syndrome. I take 500 mg. of Metformin ( glucophage), 2x a day. I read that Stevia will interact negatively, and cause low blood sugar readings if one comsumes stevia. So I quit the Stevia, having had trouble with it, and use agave nectar sparingly in smoothies/ and tea thinking that was low glycemic. I really don’t know what artificial sweetners work with the medication I am taking. Need an alternative sweetner. I use fruit as often as I can. Thanks for your valuable info.

  14. Hey Kimberly,
    I have been doing the Paleo diet for 6 months how and feel great. I notice that you mention to eat whole grains which the Paleo diet restricts because of the harmful effects it’s has on the intestinal system . What is your take on whole grains and legumes as it pertains to your autoimmune system and intestinal health overall?

    Thank you,
    Pam

  15. Hey! Thank you so much! This is very helpful! I have a huge sweet tooth, and I am so thankful for Stevia! It keeps me in check for the most part. Gonna have to use less Honey.
    Your articles are always so helpful and encouraging! Thank again! ~Hannah

  16. At one point I believe you recommended using raw coconut nectar if you needed a sweetner. Is this still the case because I thought it also is processed similar to agave?

  17. Interesting article. I am finding it hard to keep up with the ever changing recommendations of what and what not to put in my body. I recently read that your sweetener solution, stevia, was believed to be potentially harmful to men’s and women’s reproductive systems. Yikes. They all sound like bad options.

  18. Kim, are all-fruit meals okay? For instance, a large fresh fruit salad or a bunch of bananas or dates? How much fruit is okay?

    Thanks! <3

  19. Kim, a quick question, after reading your article about birth control, my husband and I decided that it would be best for me not to take the pill anymore, I didn’t want those funky hormones but now my skin is a mess!! I don’t eat any meat, dairy isnt common and I do my best to not eat much sugary desserts( which is sooo hard!) I have GGS almost everyday, so what next? Do you maybe have a face wash you reccomend? Or maybe a good makeup? I can’t use products with much oils on my skin, it makes it much worse! I’m at a loss, it is so discouraging to look in the mirror! I avoid even leaving the house because of it! Help!

  20. Very interesting post,
    I’m opening a raw food restaurants next week and have been very confused about the sweetners. iI have decided to go with coconut sugar. What do you think of this sweetner..
    I like your website it seems to make a lot of sense to me
    Carol

  21. Yikes! I am an agave nectar user (Wholesome Sweeteners Organic Blue Agave) because I thought it was a healthier choice than regular sugar! I went to the Wholesome Sweeteners website (http://www.wholesomesweeteners.com/NWillertonAgaveStatement1.html) and feel good about it’s source – coming from the actual agave plant in Mexico – so I think the brand I’m using may not be the same as the “Florida Crystals” made by the Domino’s” brand I’ve seen at Walmart.

    But…I also have the same question as the first person, Sierra: How can it be so low on the glycemic level and not raise blood sugar, but be so high in fructose? I don’t understand how that works.

    If you have any info on that I would appreciate it! I may have to change my sweetener to something else.

    All this time I thought I was buying something good :(

    Thanks!
    Benedictus

  22. The agave thing is disturbing. I do enjoy it on very seldom occasions (usually pancakes). I think I’m going to try unsweetened applesauce on them from now on. I mostly use stevia though. It’s been great. I follow a gluten-free, wheat-free, dairy-free regimen because of my autoimmune disease (and with a nutritionist’s help).

  23. I am deeply thankful for your book and now this article. it will make all the difference in people lives if they can learn from the past and embrace new studies and practices in nutrition. After all this is the 21 Century… right?

    Thanks again,
    Luisa Esposito

  24. Hi Kim,

    This was very informative. I use Agave instead of sugar sparingly and do believe that eating whole fruits will satisfy my sweet tooth. I would love to know if you think Raw Agave is bad or only processed?

  25. Words to live by!! Agave is so bad, thanks for getting the word out. Nothing irks me more than finding an awesome new raw foods and finding out they use agave as a sweetener. When I consume a product with agave, it actually makes me grumpy. It does not matter if it is clear, amber or from a popular health food guru website, still bad :)
    Nicole

  26. Thank you for explaining the agave situation. Someone had warned me against using it, but had no idea why I shouldn’t. I’m new to “raw” and didn’t know who to ask. Thanks again.

  27. Hi Kim!

    Thanks for this fabulous post!
    I actually have been wanting to ask you this for quite a while: I suffer from terrible fructose malabsorption! It’s quite debilitating at times!

    I am very, very interested in having a glowing green smoothie for breakfast daily, however apples, pears and bananas are all on my no go list! I actually avoid all fruits at the minute as this makes a huge difference to my energy and stomach bloating!

    I tried the GGS with the fruit, hoping the empty stomach, no food combining would do the trick, however it unfortunately did not work and I because very sick very quickly!

    Is there a fructose-free GGS recipe?! I tried just omitting the fruit and just having greens, but it was quite strong and not drinkable (and trust me, I will drink anything! I have noni and wheatgrass daily like it’s nothing so I am used to strong, earthy flavours!)

    I would really appreciate any options you are able to offer, as I don’t want to miss out on the Beauty Detox way of life, because my fructose malabsorption has already made me miss out on so many amazing things already!!

    Thank you in advance,
    Your fan,
    Lauren xxx

    • Hi,

      Not Kim, but most days I include a green, all-veggie green smoothie that tastes great. I load it with dark, leafy greens and add things like tomato, a little raw sauerkraut, fresh lime juice, fresh & dried herbs and a little sea salt. Things like celery, fresh herbs and things on the acidic side as far as flavors, really make it taste good!

      Have you tried the GGS with more acidic fruits or a little liquid stevia? Maybe playing around with combinations will help you find something that works for your system.

      HTH

    • I feel your pain!! I also have fructose malabsorption and its so frustration because all the food i love and want to eat, so much of it is restricted….
      It almost feels like i feel better from eating unhealthy food then the healthy food so sometimes i ignore it and eat the healthier option even if it contains fructose yet i am left in more pain…ahhh so frustrating!!! what kind of meals do you eat to stay well that are still full of nutrition?
      katie

  28. Though I agree with the content I feel the list has every sweetener in it. That makes it impossible for the regular individual to accomplish eating well. Though you do a great job at this most folks cannot follow such a rigid diet and end up quitting. I think there needs to be a compromise and provide people with options. Plus many many raw chefs still use agave which makes the info confusing. The way I see it give up fast food and keep the honey and an raw maple syrup.

    • I think that the truth about sugar is finally out. You can either except it and change your lifestyle- at a cost to your convenience but a major improvement to your health and vitality- or you can compromise and just do better, which is at least improvement. BUT I would rather have Kimberly give the facts and be super honest than water down the truth or completely lie like our “health authorities” do. We have enough advertising and marketing trying to make things comfortable for the consumer- the reality is that it’s going to be a sacrifice and difficult at times to eat the way our bodies can thrive from, but it gets easier and is worth it when you feel awesome!

    • coconut sugar isn’t on the list. you might want to try some of that :) rapadura is also great it is really just ground sugar cane it even looks like it. There is no heat in the process. Both can be found at whole foods.

  29. Kim,

    I love reading your articles, they are so informative! :D

    There is just one thing I couldn’t get.. How can agave be low-glycemic, yet extremely concentrated with fructose? I don’t understand how it could be both. If it contains so much sugar, why doesn’t the body recognize it as sugar?

    Thank You for all that you do!

    Sierra

Leave a Comment

(required)