Are Sugar Free Energy Drinks Bad for You?

Are Sugar Free Energy Drinks Bad for You?

Are sugar free energy drinks bad for you?

Check out this answer from Consensus:

While sugar-free energy drinks may not have a significant impact on short-term physical performance, there are valid concerns regarding their safety and potential role in promoting metabolic syndrome and other health issues. The evidence suggests that both sugar-sweetened and sugar-free energy drinks should be consumed with caution. Further research is needed to fully understand the long-term health implications of these beverages.


Energy drinks have become a staple in the diets of many individuals seeking a boost in energy and performance. However, the health implications of these beverages, particularly sugar-free variants, have been a topic of debate. This article delves into the scientific research surrounding sugar-free energy drinks and their effects on health.

Impact on Physical Performance of Sugar Free Energy Drinks

Studies have investigated the effects of sugar-free energy drinks on physical performance with mixed results. Research indicates that sugar-free Red Bull, a popular energy drink, does not significantly impact upper body strength or muscular endurance in resistance-trained men. Similarly, another study found that sugar-free Red Bull did not influence high-intensity run time-to-exhaustion in young adults. These findings suggest that, at least in the context of short-term physical performance, sugar-free energy drinks may not provide the ergogenic benefits often claimed by manufacturers.

Metabolic Health Concerns of Sugar Free Energy Drinks

The chronic intake of energy drinks, including sugar-free versions, has been associated with the promotion of metabolic syndrome, particularly insulin resistance. This is concerning as metabolic syndrome is a cluster of conditions that increase the risk of heart disease, stroke, and type 2 diabetes. The study comparing the effects of standard and sugar-free energy drinks to a soft drink and a Western-styled diet found that both types of energy drinks induced signs of metabolic syndrome in mice. This suggests that the absence of sugar does not necessarily make these beverages a healthier choice.

Weight Gain and Obesity

The consumption of sugar-sweetened beverages has been linked to weight gain and obesity. While sugar-free energy drinks do not contain the high sugar content of their sweetened counterparts, they often contain artificial sweeteners and other additives that may still contribute to weight gain. A systematic review has shown a positive association between greater intakes of sugar-sweetened beverages and weight gain and obesity in both children and adults. However, the direct impact of sugar-free energy drinks on weight gain is less clear and warrants further investigation.

Safety and Adverse Effects of Energy Drinks

Energy drinks, including sugar-free variants, contain a mix of ingredients such as caffeine, taurine, and sometimes herbal supplements like ginseng and guarana. The safety of these ingredients has been questioned, with reported adverse effects including insomnia, nervousness, headache, and tachycardia. Moreover, there have been documented cases of caffeine-associated deaths and seizures linked to energy drink consumption. These safety concerns highlight the need for caution when consuming these beverages.

Public Health Concerns of Energy Drinks

The growing consumption of energy drinks has raised public health concerns, particularly regarding their effects on mental health, cardiovascular health, and risk-seeking behaviors. The aggressive marketing of energy drinks towards adolescents and the trend of mixing them with alcohol pose additional challenges. Public health strategies are needed to discourage excessive consumption of sugary drinks and to regulate the marketing of energy drinks, especially to young people.


Are Sugar Free Energy Drinks Bad for You?

Cornelie Nienaber-Rousseau has answered Likely

An expert from North-West University in Nutrition

Energy drink consumption is growing worldwide and the industry has proven extremely profitable (Heckman et al., 2010). However, questions regarding the nutritional content and health effects should be raised and answered. These drinks can be ready-to-drink, shots, or presented in powder form (Heckman et al., 2010). Energy drinks can be carbonated and contain sugar (to give energy) or artificial sweeteners (for a low energy alternative), herbal extracts, can be fortified with micronutrients (some B-vitamins involved in energy metabolism) or macronutrients such as the amino acid taurine and stimulants such as caffeine. Marketing strategies for these formulations include statements purporting to increase energy utilization, boost energy, improve mood, enhance physical endurance, increase longevity and vitality, reduce mental fatigue and increase reaction time (Heckman et al., 2010). However, in certain population subdivisions consumption and in all groups excessive consumption might actually be harmful depending the specific cocktail used in the composition of the drink.

When energy drinks are used occasionally and in realistic amounts to for instance to counteract driver sleepiness (Reyner & Horne, 2002) or to increase physical endurance for athletes (Alford et al., 2001), the high sugar content can be justified as a source of discretionary energy for those of a healthy weight without diabetes. However, given the prevalence of overweight/obesity and the frequent consumption the high sugar content of sugar containing energy drinks are of concern. Currently the evidence indicates that dietary added sugar is notoriously associated with dental caries, contributes to weight gain and several other risk factors for non-communicable diseases as well as the diseases themselves (World Health Organization). Unfortunately sugar free energy drinks cannot necessarily be considered to be a healthier version, because even though artificial sweeteners are regarded as generally safe there seems to be several long term health effects including that going “diet” is actually leading to weight gain (Brown et al., 2010; Chia et al., 2016; Fowler et al., 2008; Fowler et al., 2015). Please check out my previous answer on whether artificially sweetened foods and drinks are less healthy than their sugary counterparts.

Caffeine intake’s safety has been evaluated among adults. It is safe for the typical healthy adult to consume a total of 400 mg of caffeine a day (Mayo Clinic; European Food Safety Authority, 2015). This is equivalent to 4 cups of coffee (90 mg each) or approximately 2 1/2 standard cans (250 ml) of energy drink provided that it contains 160 mg each/80 mg per serving. However, not all countries regulate the amount of caffeine permitted in energy drinks and, therefore, some can contain more per serving. The American Academy of Pediatrics (2011) recommends that children not consume caffeine and also not caffeinated energy drinks. Disturbingly Seifert et al. (2011) observed that energy drinks containing high and unregulated amounts of caffeine are also consumed by 30-50% of adolescents and young adults and that of the caffeine overdoses reported in 2007 in the US, 46% occurred in individuals younger than 19 years. In a summary of studies Grosso and others (2017) indicated that caffeine was associated with a probable decreased risk of Parkinson’s disease and type-2 diabetes and an increased risk of pregnancy loss and increased blood pressure. Energy drinks have been associated with serious adverse effects such as seizures, diabetes, mood and behavioral disorders including risk-seeking behaviors, poor mental health, adverse cardiovascular effects, and metabolic, renal, or dental conditions and increase the risk of dehydration (Al-Shaar et al., 2017; Higgins et al., 2015; Seifert et al., 2011). As summarized by Al-Shaar et al. energy drink consumption may also disrupt sleep patterns, cause headaches, stomach-aches and lead to irritation. Most research focused on the effect of caffeine and sugar and failed to address potentially harmful effects of the other ingredients in the energy drink cocktails. Summaries of studies on the effects of energy drinks have not been done and because there is some inconsistencies in the studies regarding the above mentioned risks, systematic reviews and meta-analyses are urgently needed.

The pharmacological safety of some of the herbal extracts should be evaluated individually. Komihon and others (2016) showed in their summary of randomized controlled clinical trials that ginseng appears to have neutral vascular effects – therefore it is neither beneficial nor harmful. Also guarana is generally considered to be safe even though it contains high amounts of caffeine (Patrick et al., 2019), but more research is needed. A summary of studies on Ginkgo biloba in patients with cognitive impairment and dementia indicated that it could stabilize or slow decline for cognitive function especially for those patients presenting with neuropsychiatric symptoms (Tan et al., 2015). Yerba mate which is regarded as a stimulant is also used as an ingredient in some energy drinks. Yerba mate has several adverse health effects such as causing some types of cancers and also some beneficial effects such as lowering cholesterol (Heck & de Mejia, 2007). Therefore, the risk versus benefits of yerba mate should be carefully evaluated by researchers to protect consumers. I have not mentioned here all herbal extracts that could be present in energy drinks – consumers should consult their dietician, pharmacist or doctor about the effects of these herbal extract and possible interactions with prescription medication should be considered. While certain formulations in energy drinks can be safe the unregulated nature of the sectors makes it difficult for consumers to know when to steer clear.

There is an alarming trend of mixing energy drinks with alcohol. The reason why this is potentially dangerous is the masking effect that energy drinks are proposed to have over alcohol intoxication. According to Oteri and others (2007) the combination of the stimulatory effect of caffeine and the depressant effect of alcohol on the body, hinders awareness of the warning signs of alcohol intoxication such as drowsiness. More research investigating the potential dangers that could result from the combination of alcohol and caffeinated beverages is needed while the public should be made aware of the potential risk of drinking such concoctions. Energy drinks are considered to be possible gate way drugs because their consumption often coincides with substance abuse (Holubcikova et al., 2017; Reissig et al., 2009; Terry-McElrath et al., 2014). Reasons for this could be that energy drink companies are using intentionally defiant names (Full Throttle, Ammo, Havoc, Hydrive, Morning Spark, Monster) for their products (Energy Fiend, 2009) drawing a certain population group to consume their products who are more prone to substance abuse to begin with. However, it could also be related to increased risk taking behavior associated with the consumption of the drinks (as reviewed by Al-Shaar et al., 2017).

Another issue to consider is the underlying medical or lifestyle reasons for feeling fatigued and in need of an energy boost. Consumers regularly using energy drinks to compensate for a lack of sleep (Miller, 2008) should reconsider their lifestyle and sleeping patterns as this in itself can be harmful (see Metafact consensus paper on sleep). Furthermore, iron deficiency anemia is a world wide problem with serious adverse effect such as chronic fatigue that could and should be treated. Research from our group showed that maintaining your iron status is not only important to prevent fatigue but also for cardiovascular health ensuring optimal blood coagulation and clot breakdown (Rautenbach et al. entitled: “Certain Associations between Iron Biomarkers and Total and γ’ Fibrinogen and Plasma Clot Properties are Mediated by Fibrinogen Genotypes” recently accepted for publication in Frontiers in Nutrition). Therefore, if you are in need of using energy drinks consider which harmful symptoms you are masking and consult with medical professionals for advice.

In summary, some of the ingredients often found in energy drinks are not regulated and are understudied and their effects are not known. The public especially need to be aware of the possible effects of energy drinks in vulnerable populations such as the youth, caffeine-naïve or caffeine-sensitive, pregnant, competitive athletes and people with underlying cardiovascular disease (Higgins et al., 2015). Al-Shaar and others (2017) recommend that policy makers consider creating a separate regulatory category for energy drinks, that there should be an evidence-based upper limit on caffeine, sales of these drinks should be restricting and regulating and marketing should not be targeted towards the children and adolescents. Furthermore, on a personal note one should start paying attention to the amount of caffeine one is ingesting from foods such as chocolate or energy bars and beverages by reading the labels, but keep in mind that not all labels will list caffeine. Also consider making (plain clean safe) water the principal source of hydration and only occasionally (if at all) drinking energy drinks provided that you do not fall within the vulnerable population subgroups who should not consume energy drinks for optimal health and well-being.

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