Oct 30, 2026

Sugar Substitutes Linked to Faster Brain Ageing by 62%: Know in Details

Sugar Substitutes Linked to Faster Brain Ageing by 62%: Know in Details

During the Pujas, your cheat week, you broke all the lockgates of discipline. You indulged in delicacies like classic sandesh, white Rasgulla, and Anjeer ladoo, sugar-free sandesh, etc.

You may ask: So, what happened? After all, you have intelligently selected zero-calorie sweetener versions, right? You are in the safe zone. 

Wait.  You might not be aware that sugar substitutes are doing substantial harm to your body, especially your brain. For those like you who are consuming them without fear, this is definitely an alert. So, stay till the end to know more about the eye-opening study.

H2: Six Sugar Substitutes Associated with Cognitive Decline

Researchers examined a few sweeteners that are under the radar. They are used extensively in flavoured waters, diet sodas, ultra-processed foods, energy drinks, yoghurt, and low-calorie diets.

• Aspartame

• Saccharin

• Acesulfame-K

• Erythritol

• Sorbitol

• Xylitol

Just because they are sugar substitutes (as the concept suggests) does not mean they are harmless. 

They are all highly popular among people. However, following a scientific study discussed below about their negative impact on cognitive health, searches like ‘aspartame side effects’ and ‘saccharin health effects’ have increased manifold in recent times.

H2: Who May Be More Vulnerable to Cognitive Decline?

1. Adults Below 60 Years of Age

Interestingly, the study found a stronger association between higher sweetener consumption and faster cognitive decline among adults younger than 60. 

Participants in this age group who consumed greater amounts of artificial sweeteners experienced a more rapid decline in cognitive performance than those with lower consumption levels.

2. Individuals Who Frequently Consume Processed Foods

People who regularly consume packaged beverages, sugar-free desserts and other processed foods may have greater exposure to artificial sweeteners. 

Many such products contain low-calorie sweeteners as alternatives to conventional sugar. Therefore, understanding ingredient labels and monitoring overall consumption can be important.

3. People Who Consume Multiple Sugar Substitutes

Individuals who consume different sweeteners through beverages, snacks and packaged foods may unknowingly increase their overall intake. Even products marketed as healthy sugar alternatives deserve attention. For instance, understanding potential sorbitol side effects and other sweetener-related concerns can help consumers make informed dietary choices.

4. Individuals with Existing Cognitive Health Concerns

People already experiencing memory difficulties or age-related cognitive changes should pay attention to their overall dietary patterns. However, current research does not establish that artificial sweeteners directly cause or worsen these conditions.

Artificial Sweeteners, the Sugar Substitutes, Expedite Brain Ageing: Here Is the Research

A study from the University of São Paulo in Brazil suggested that artificial sweeteners, sugar alternatives found in different food substances, may speed up cognitive decline.

So, in a way, this observation, if it turns out to be true, may risk the brain health of millions of people, not only in America but across the world.

Researchers analysed data from not one or two but 12,772 people across Brazil. Of course, they were from different age groups. 

It's quite obvious that they would be consuming sugar-free sweeteners and related foods in their daily lives.

This study on brain ageing continued for eight years.

The participants were further segregated into three basic groups:

• The lowest consumption group averaged 20 milligrams per day (mg/day).

• The average intake group averaged 64 mg/day.

• Highest consumption group averaged 191 mg/day.

Results on sugar substitute consumption

The results of the study on cognitive decline were shocking, to say the least.

The participants falling under the highest sugar-free sweetener consumption group experienced much faster brain ageing (62% faster than the lowest consumption group).

Even the middle or moderate consumption group experienced 32% faster cognitive decline compared to that of the lower consumption group.

So the takeaway from this blog is: select your food judiciously. You never know what you are eating.