The Five Ways Sweeteners May Be Making You Sick

Updated on December 6, 2019
RedRavenwords profile image

Sophie Jackson is a freelance writer who has written for national newspapers and magazines

Are Sweeteners Making You Sick?

Headaches, stomach upsets, nausea, mouth ulcers, low blood sugar—all these problems have been linked with the consumption of sweeteners. If you have recently been feeling unwell, and do not know the cause, it may be because you are one of the many people who unwittingly suffer from an intolerance to sweeteners. Learning what causes the problem is the first step to solving it. Below are five ways sweeteners can make you ill and the symptoms of sweetener intolerance.

Packets of artificial sweetener
Packets of artificial sweetener | Source

Know Your Sweeteners

Artificial sweeteners include aspartame, saccharin, and sorbitol. Natural sweeteners include stevia, which is a plant extract.

A Real Headache

There is a lot of debate as to whether sweeteners cause headaches and migraines. Much of the information is anecdotal, though at least two scientific studies have indicated that migraines are triggered by the consumption of sweeteners—namely aspartame and sucralose (commonly called Splenda).

Ironically, Splenda is often named as a "safe" sweetener for migraine sufferers. This is not necessarily the case. A study from 2007 demonstrated that one female patient suffered migraines as a direct result of consuming Splenda. Her migraines were also worse when triggered by the sweetener. When she completely removed sucralose/Splenda from her diet, her migraines stopped.

Another study, from 2009, indicated that aspartame was a migraine trigger, especially in children and adolescents.

There a number of theories as to why sweeteners may cause migraines. Aspartame is known to break down into formaldehyde when it is ingested, and many migraine sufferers react badly to formaldehyde. Aspartame also affects neurotransmitters, over-exciting brain cells, and potentially destroying them. In certain individuals, this triggers migraines.

One of the known risk factors for migraines is obesity. Sweeteners have been marketed as a means of combating obesity; however, a number of studies, including one conducted by Yale University, have shown that sweeteners can increase obesity, rather than decrease it.

John Hopkins University studied 24,000 people in 2014 and found that those who were obese drank higher quantities of diet drinks than those who were a healthy weight. The reasons behind this seemingly odd correlation are still being explored, but there is growing evidence that consuming sweeteners does not prevent you from getting fat.

Headache sufferer cradles his throbbing head
Headache sufferer cradles his throbbing head | Source

Taxing Sweetness

The introduction of the UK sugar tax has seen a surge in manufacturers replacing sugar in soft drinks with sweeteners.

Belly Aching?

If you are a sufferer from IBS (irritable bowel syndrome) you may be already aware that your symptoms worsen after consuming products with sweeteners. Even if you do not suffer from IBS, you may have experienced stomach cramps, nausea, vomiting or diarrhoea as a result of drinking or eating sweeteners.

I can personally testify to the discomfort and sickness caused by consuming sweeteners. My first bad experience came after drinking lemonade that contained aspartame. I threw-up after consuming it. Over the years, I have tried other sweeteners with similar effects. The awful nausea many of these sweeteners caused me, has made me very cautious of what I consume.

Limited research has been done on why sweeteners cause these problems in some people, despite the fact that many IBS sufferers have been able to link an increase in their symptoms with sweetener consumption. It may be that sweeteners have a negative effect on the good bacteria in the gut, which is more noticeable in IBS sufferers.

Whatever the reason, many IBS sufferers are finding that avoiding sweeteners has made a huge improvement to their symptoms.

Common Sweeteners

Used in
Believed to Cause
Diet drinks, sugar-free ice cream and sauces, lollypops, yoghurts
Migraines, stomach upsets, nausea, dizziness, tiredness
Sugar substitutes, diet drinks, sugar-free cakes/sweets
Migraines, depression, stomach upsets, nausea
Diet drinks, toothpaste, sugar substitutes
Stomach upsets, raised blood sugar
Soft drinks, jelly, jam, fruit juice drinks
Stomach upsets, nausea, low blood sugar, low blood pressure
Table showing the side-effects associated with the commonest sweeteners
Chocolates can contain sweeteners, they are often listened as a Humectant
Chocolates can contain sweeteners, they are often listened as a Humectant | Source

The Blood Sugar Low-down

For people suffering from blood sugar problems, going sugar-free, and consuming only products that contain sweeteners might seem like a logical choice. The reality is not so simple. Sweeteners might not only raise your blood sugar, but they could also lower it too far, resulting in hypoglycemia.

This is the case with Stevia. Stevia is a popular sweetener used by many people, including diabetics. Stevia lowers the blood sugar, which for some, is a reason for consuming it; however, when already restricting diet to keep the blood sugar low, Stevia can be a step too far. The sweetener may cause blood sugar levels to drop too much, making a person seriously ill.

This is of especial concern for diabetics who must constantly monitor their blood sugar. When their levels drop too low, the solution is to reach for something sweet to give a sugar boost. If that product happens to be a drink or food flavoured by stevia, or certain other sweeteners, the anticipated effects will not be felt. The blood sugar will not rise significantly, and, in the case of stevia, the blood sugar may drop even lower.

Equally, not all sweeteners are good for diabetics, or people watching their blood sugar. Sorbitol and xylitol, for instance, though used in sugar-free products, actually can raise the blood sugar levels. Meaning their consumption needs to be monitored as carefully as eating products containing sugar.

Even non-diabetics can experience problems with their blood sugar as it rises and falls during the course of a day. Symptoms of low blood sugar in a non-diabetic include hunger, shakiness, feeling sleepy, feeling anxious, dizziness, confusion, sweating, trouble speaking, feeling irritable, and, at the worst end of the spectrum, fainting. The medical recommendation for when suffering a sugar low is to consume 15grams of something containing a carbohydrate (sugar is a carb). This could be fruit juice, glucose tables or a hard candy.

Unfortunately, many fruit juice drinks, unless listed as 100% pure juice, now contain sweeteners instead of sugar, making them useless for low blood sugar sufferers. The same can apply to some forms of hard candy.

If you have experienced any of the symptoms above and consume sugar-free products, cutting them out of your diet may alleviate the problem. However, you should also consider seeing your doctor as frequent episodes of low blood sugar can be a sign of further health problems.

The BBC Two programme "Trust me, I'm a Doctor" ran a study where volunteers consumed the sweetener saccharin for seven days at the recommended safe levels. At the end of the study, several of the volunteers had blood sugar levels that were higher than what's considered healthy.

Under Pressure

A health concern that few people are aware of is the effect that certain sweeteners can have on blood pressure. Stevia, which is marketed as a natural sweetener made from the stevia plant, has long been known to act as a vasodilator—that means it widens the blood vessels, causing the blood pressure to drop.

This trait of Stevia is often advertised as a benefit, and for some people it is. However, for those with naturally low blood pressure, or who are taking medications to reduce their blood pressure, the long-term effects of regular consumption of Stevia could be serious. Medical News Today recommends that anyone with chronic low blood pressure, or those taking medications to reduce blood pressure, should speak to their doctor before consuming stevia.

Conversely, a recent review of 37 studies on the effects of consuming artificial sweeteners organised by the University of Manitoba, discovered that there was a link between sweeteners and an increased risk of high blood pressure.

Dr. Meghan Azad, Assistant Professor at the university stated:

"Caution is warranted until the long-term health effects of artificial sweeteners are fully characterised. Given the widespread and increasing use of artificial sweeteners and the current epidemic of obesity and related diseases, more research is needed to determine the long-term risks and benefits of these products."

This low sugar jam contains sweeteners, and has a warning about possible side-effects of consuming them
This low sugar jam contains sweeteners, and has a warning about possible side-effects of consuming them | Source

"Caution is warranted until the long-term health effects of artificial sweeteners are fully characterised."

—Dr. Meghan Azad, University of Manitoba

The Battle of the Bulge

For many people, the consumption of sweeteners is part of a plan to lose weight or to keep weight off. Yet, more and more evidence is indicating that sweeteners are as much to blame for obesity, as traditional sugar.

In the same review of studies that discovered sweeteners could be linked to high blood pressure (see above), it was noticed that, despite claims, sweeteners were not helpful in weight loss programmes.

"We found that data from clinical trials does not clearly support the intended benefits of artificial sweeteners for weight management," stated Dr. Ryan Zarychanski of the University of Manitoba.

It seems counter-intuitive that diet drinks and foods could actually be making you fat, but the evidence for such a correlation is increasing. In the 1980s, the San Antonio Heart Study examined 3,682 adults over a seven- to eight-year period, looking at their gender, race and diet, and recording their BMI over the period. Those participants who drank artificially sweetened products had a higher BMI at the end of the study than those who did not drink low-calorie beverages. A similar study by The American Cancer Society produced the same results. (For both studies, see here.)

The reasons for this trend are complicated. It is known that sweeteners increase the appetite (follow the link above for studies) and that people who consume a diet drink before a meal will eat more than a person who has drunk water, or a naturally sweetened drink. Other experts contend that the link between diet products and obesity is psychological, with people feeling that as they have "been good" by drinking a low-calorie product, they can eat more.

Though the exact explanation for why sweeteners cause weight gain is still debated, one thing is clear—despite an increasing number of people opting to consume diet products and using artificial sweeteners, obesity is still on the rise.

The Stevia plant is used to produce the commercial sweetener of the same name
The Stevia plant is used to produce the commercial sweetener of the same name | Source

Final Thoughts

The use of artificial sweeteners is on the rise, but evidence suggests that in some people, they can be the trigger for serious health concerns. Experts argue on their safety and whether they actually have any benefit. The information out there can be confusing and contradictory.

I hope this article has given you some insight and maybe offered an explanation for what is triggering any health problems you are having. Cutting sweeteners from your diet could be the key to better wellbeing, but in practice, it can be a time-consuming and challenging process. Sweeteners can be found in any product and do not have to be listed as an allergen.

At the current time, many who are adversely affected by artificial sweeteners, suffer in silence, possibly not even aware of what is causing their ailments. As science catches up and provides evidence of the problems sweeteners can cause, that will hopefully change. Until then, the onus is on the individual to check every label on the products they buy.

This content is accurate and true to the best of the author’s knowledge and does not substitute for diagnosis, prognosis, treatment, prescription, and/or dietary advice from a licensed health professional. Drugs, supplements, and natural remedies may have dangerous side effects. If pregnant or nursing, consult with a qualified provider on an individual basis. Seek immediate help if you are experiencing a medical emergency.


    0 of 8192 characters used
    Post Comment
    • profile image


      7 months ago

      I am glad I read this, both my wife and I suffer from unpleasant side effects of these sweeteners.

      We are finding it very frustrating how many companies are now using them, even in non diet products. This means we are very limited to what we can consume now.

      Sweeteners may benefit some people but what about the others who are affected, sugar never done us any harm but sweeters are now making us ill.

    • profile image


      9 months ago

      I am so glad I read this article. I chew a lot of gum at night and I have been diagnosed with Reactive Hypoglycemia and the endocrinologist had no idea why this has happened. I also have Meniere's Disease and a host of other issues including dizziness, nausea, low blood pressure, migraines and more. I am switching to Put or another natural gum and see if that helps.

    • profile image


      13 months ago

      I am nauseous a lot during the day and night, wake up nauseous most days. It occurred to me that it could have to do with eating Atkins no sugar bars f,ex, Any chance this could be linked?



    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)
    ClickscoThis is a data management platform studying reader behavior (Privacy Policy)