Exposure to the frequently used artificial sweetener aspartame, often found in diet sodas, has been connected to chronic illnesses and autism. Studies suggest that consuming just one diet soda during pregnancy can increase the autism risk in male children by threefold.
Research has shown that early life exposure to aspartame might be associated with autism, especially in boys. This artificial sweetener, linked to neurological issues and potentially cancer-causing effects, is used in over 23,000 global products, including diet soda. Its consumption among adults and kids grew by 54% and 200%, respectively, between 1999 and 2012. Meanwhile, autism rates surged from 0.3 per 1,000 children pre-1980 to 27.6 per 1,000 in 2020. Environmental components, possibly including aspartame, might be influential.
Exposure to aspartame in early life elevates autism risk significantly
The University of Texas Health Science Center at San Antonio researchers probed if exposure to a single diet soda or an equal amount of aspartame (177mg) daily during pregnancy or infancy heightens autism risk. Their findings indicated that male children with autism were over three times likelier to be born to mothers who consumed aspartame or diet soda regularly during pregnancy or while breastfeeding. The lead author of the study, Dr. Raymond F. Palmer, emphasized that while these links don’t confirm causation, they do raise important questions regarding neurological implications.
The research evaluated data from 235 children with autism and 121 neurotypical children. Boys who were exposed to diet soda or aspartame daily during gestation or while breastfeeding exhibited a three times elevated autism risk.
Given the findings, some doctors and researchers advise women against aspartame consumption during pregnancy and breastfeeding. They stress the importance of caution until further research can provide clearer insights.
The harmful neurological impact of aspartame
When consumed, aspartame breaks down into various compounds, some of which might lead to:
- Neurotoxicity
- Alterations in neurotransmitter concentrations
- Neuronal damage and impairment
- Increased neuronal cell death
- Neurodegeneration
- Cognitive issues
Additionally, even minimal exposure to aspartame during pregnancy may cause inflammation and result in autism-like behaviors in the offspring. Animal research also links aspartame consumption to a decrease in a key antioxidant during brain development, which can lead to various issues like increased brain inflammation and disruptions in neurotransmitter levels.
Furthermore, aspartame can negatively impact gut flora, which might aggravate autism’s developmental pathways. As the research team at UT Health San Antonio emphasized, this combined impact can potentially harm neurodevelopment.[xiii]
WHO on aspartame: ‘potentially harmful to humans’
In search of more reasons to steer clear of aspartame? Our database lists multiple health risks related to aspartame consumption. Notably, in 2023, WHO’s IARC categorized aspartame as potentially harmful to humans.
In 2023, WHO also cautioned against using artificial sweeteners for weight management due to potential long-term adverse effects. Moreover, a 2022 study in the BMJ associated a high intake of certain artificial sweeteners, including aspartame, with an increased risk of heart ailments.
Even with mounting evidence, many public health bodies maintain that aspartame consumption within daily permissible limits (around 9 to 14 cans of diet soda for a 150-pound person) is safe.
Given the ease of avoiding aspartame by carefully choosing foods or opting for natural, unprocessed foods, it’s advisable to omit aspartame from your diet, especially if expecting or nursing a child.