The Bitter Truth About Stevia: Why It May Not Be a Good Sweetener

In recent years, there has been a growing trend towards healthier eating habits and reduced sugar consumption. As a result, alternative sweeteners have gained popularity, with stevia taking centre stage as a "natural" and calorie-free sweetening option. 

While it may sound like the ideal sugar substitute, there are several compelling reasons why stevia may not be the best choice for everyone. In this blog post, we'll explore the downsides of stevia and why it may not be a good sweetener after all.

Bitter Aftertaste

One of the most common complaints about stevia is its bitter aftertaste. While it's significantly sweeter than sugar, this intense sweetness is often accompanied by a noticeable bitter undertone. Many people find this bitterness off-putting and report that it can negatively impact the taste of their food and beverages. This bitter aftertaste can be particularly pronounced in some brands and forms of stevia, making it a less-than-ideal choice for those who seek a truly sweet and enjoyable taste. (I was thinking it was just me who was troubled by the bitter aftertaste problem? I have just eaten a stevia sweetened mango yoghurt and the unpleasant bitter aftertaste is still troubling me some ten minutes after I finished it.)

Highly Processed

Stevia is often marketed as a "natural" sweetener because it is derived from the leaves of the Stevia rebaudiana plant. However, the reality is that most commercial stevia products are highly processed and refined. The leaves undergo a series of chemical processes, including extraction and crystallisation, to create the final stevia sweetener. In this sense, the end product bears little resemblance to the natural, unprocessed plant. This level of processing raises questions about whether stevia can truly be considered a natural sweetener after all.

Potential Health Concerns

While stevia is often touted as a healthier alternative to sugar due to its zero-calorie nature, some studies have raised concerns about its safety. The European Food Safety Authority (EFSA) has questioned the potential genotoxicity of certain steviol glycosides, which are the compounds responsible for the sweet taste in stevia. Although these findings are not definitive, they do underscore the need for more research and careful consideration before fully embracing stevia as a safe sugar substitute.

Impact on Blood Sugar

Another factor to consider is that stevia may have varying effects on blood sugar levels from person to person. While it's generally considered safe for individuals with diabetes because it doesn't directly raise blood sugar, some studies suggest it may affect blood sugar control differently in different people. This means the impact of stevia on blood sugar isn't as predictable or consistent as one might hope.

Adaptation and Cravings

Using sweeteners like stevia can alter your palate and taste preferences. Since stevia is far sweeter than sugar, it can lead to an increased preference for overly sweet foods and beverages. Over time, this can make it challenging to enjoy naturally sweet foods like fruits and vegetables. Additionally, there's some evidence that artificial and highly sweet tastes can trigger cravings for more sweet items, potentially leading to overconsumption of calories from other sources.

While stevia has its merits as a low-calorie alternative to sugar, it's essential to consider its potential drawbacks. The bitter aftertaste, processing methods, potential health concerns, effects on blood sugar, and the potential for increased sweet cravings all highlight why stevia may not be the best sweetener for everyone. 

It's important to approach stevia and other sugar substitutes with a critical eye, weigh the pros and cons, and consider your personal health and taste preferences when making choices about your sweeteners. In the end, moderation and balance may be the key to a healthier and more satisfying approach to sweetness in your diet.

Incidentally the reason for publishing this blogpost is that my wife is quite severely allergic to stevia and we decided to do some research on the potential downsides to using stevia, as we realised my wife cannot be the only person so impacted on by stevia.)

(Image courtesy of Kimberly Protasio from Pixabay)