various fast food items. Pizza, fried chicken, onion rings, french fries, etc.
Sean Cate
Sean Cate
July 16, 2024 ·  4 min read

Fast Food from McDonald’s, Burger King, Pizza Hut, And Domino’s Contain Toxic Chemicals Linked to Infertility

Fast food has long been associated with various health concerns due to its high calorie, fat, and sodium content. However, a report has highlighted another concern related to popular fast-food chains such as McDonald’s, Burger King, Pizza Hut, and Domino’s.1 The study, done by researchers from George Washington University, revealed that these fast-food items contain toxic chemicals called phthalates, which have been linked to infertility and other health problems. This article will explore the findings of the study, provide an update on related news, discuss the concerns on phthalates, and conclude with the implications of these findings.

Fast Food and Phthalates

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The study done by George Washington University researchers aimed to analyze the presence of phthalates in fast-food items from popular chains. The researchers bought 64 food samples from national burger chains McDonald’s and Burger King; pizza chains Pizza Hut and Domino’s, and Tex-Mex chains Taco Bell and Chipotle in San Antonio.2 The study found that most of the samples contained phthalates, a harmful class of chemicals used to make plastic softer.3 This chemical links with health issues such as messing with the endocrine system, fertility and reproductive problems, a higher risk for learning and behavioral disorders in children, and a risk for asthma.

The study revealed that more than 80% of the food samples contained a phthalate called DnBP, which is linked to asthma, and 70% contained DEHP, which is associated with reproductive problems. Furthermore, the researchers identified another plasticizer called DEHT in 86% of the foods tested, which was used as a replacement, but has not been studied much for its potential effects on human health. The presence of these chemicals in fast-food items is a problem, especially considering how popular and widespread the food consumption of these chains is.

Read More: 16 Worst Fast Food Chains to Avoid

Recent Developments and FDA’s Response

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Since the study was done in 2021, it is important to provide an update on any related news. In 2022, the Food and Drug Administration (FDA) had rough news regarding the control of these phthalates. Despite the proven negative health impacts of these chemicals, the FDA decided not to impose a total ban on phthalates commonly found in fast-food packaging.4 The FDA bans the use of the 23 types of phthalates for food contact applications, but those certain types have already been left behind by the food chains, making the ban somewhat useless. The FDA still allows the use of nine other similar compounds in food contact applications. This decision sparked criticism from scientists and environmental groups who have long asked for the removal of these dangerous chemicals.

Understanding Phthalates and Concerns for Fertility

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To better understand the concerns about their impact on fertility, it is necessary to delve into their make-up and usage. Phthalates are a group of chemicals that make plastics more flexible and durable. These chemicals can be commonly found in vinyl flooring, lubing oils, personal products, and plastic packaging.5 In fast food, they can transfer from plastics in food handling products, such as gloves and tubing, into the food.

Phthalates interfere with hormone function, which can lead to reproductive problems and other health issues. While the study focused on the link between fast food and phthalates, it is important to note that people are still exposed to it through various sources in their daily lives. For example, phthalates can be found in make-up, cleaning products, and other household items. Previous research has shown that individuals who often consume fast food have higher levels of phthalates in their bodies compared to those who cook their own meals at home. This shows that diet plays a significant role in phthalate exposure.

Read More: Senior Citizens Are Replacing Teenagers as Fast-Food Workers

Implications and Conclusion

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The findings of the study by George Washington University researchers raise concerns about the presence of toxic chemicals, specifically phthalates, in fast-food items from popular chains such as McDonald’s, Burger King, Pizza Hut, and Domino’s. These chemicals can lead to fertility and reproductive problems, as well as other health issues. While the levels of phthalates found in the tested samples were below the Environmental Protection Agency’s thresholds, it is important to consider the total exposure to these chemicals from various sources.

The FDA’s decision not to impose a total ban on phthalates in the chain’s packing has sparked criticism from scientists and environmental groups. With the known health risks linked to them, it is crucial for agencies to prioritize protecting public health and consider their stance on these chemicals again.

Bottom Line

French fries, burgers and other fast food on wooden table against white background
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To lower their exposure, individuals can opt for home-cooked meals using fresh food rather than relying heavily on fast food. Additionally, they can choose products that are phthalate-free and push for better regulations regarding the use of these chemicals in food packaging and other goods. Overall, the study shows the importance of awareness of the potential risks of fast food and harmful chemicals in these food items. More research and action are needed to address the potential health hazards of phthalates and ensure the safety of the food supply chain.

Read More: 8 of The Most Dangerous Foods in the World


  1. Some fast-food items contain plastics linked to serious health problems, new report shows.” Washington Post. Laura Reiley. October 2021.
  2. Phthalates on the fast-food menu: Chemicals linked to health problems found at McDonalds, Taco Bell.” USA Today. Marina Pitofsky. October 27, 2021.
  3. Toxic chemicals linked to infertility found in Big Macs and Taco Bell burritos.” Insider. Andrea Michelson. October 27, 2021.
  4. FDA sparks anger with decision on ‘phthalates’ — a chemical in fast-food packaging.” The Hill. Sharon Udasin. May 19, 2022.
  5. Phthalates Factsheet.” CDC