Ultra-Processed Foods: The Science Behind the Shortcomings
Ultra-Processed Foods: even ‘Healthy’ Versions Aren’t a Free Pass, Study Suggests
Table of Contents
Even when ultra-processed foods are formulated to be nutritious, sticking to a diet of only those foods proves challenging, and isn’t necessarily a path to better health for everyone, a new study reveals. The research underscores the complexities of navigating the modern food environment and highlights the need for broader systemic changes.
The Nuance of “Healthy” Ultra-Processed Foods
A recent study published in Cell Metabolism explored what happens when people eat a diet consisting entirely of ultra-processed foods – but with a twist. These weren’t the typical sugary drinks and salty snacks. Researchers created versions of common foods like breads, cookies, and even pizza, using ingredients and formulations designed to meet nutritional guidelines. Participants were provided with all their meals for two weeks, either ultra-processed or minimally processed, and then switched.
The surprising result? Participants gained weight on both diets, but gained more on the ultra-processed diet, even the “healthy” versions. they also consumed substantially more calories on the ultra-processed diet.
“It wasn’t that the ultra-processed foods were inherently bad,” explained Dr. Kevin Hall, the study’s lead author, in a STAT interview. “It was that people ate more of them.” The study suggests that the palatability and ease of overconsumption of ultra-processed foods, even those designed to be nutritious, override the benefits of their ingredient composition.
Real-World Challenges and Public Health Messaging
The study’s findings resonate with the everyday struggles many face when trying to eat healthily. Even with food provided, participants found it harder to adhere to the minimally processed diet – “which speaks to potential real world challenges that people may face” in steering clear of ultra-processed foods, said Julia Wolfson, associate professor at Johns Hopkins bloomberg School of Public Health.
Wolfson believes public health messaging needs to acknowledge these difficulties. ”Because of factors like cost, time, and accessibility, we all consume at least some UPFs… so when you do, try to choose UPFs that are healthy as well.” This isn’t about complete avoidance, but about making informed choices within the constraints of daily life.
Limitations and Future Directions
Its important to note the study’s limitations. The research involved a small group, primarily women, and excluded individuals following specific dietary restrictions like kosher, halal, or vegan diets. Furthermore, the authors caution that weight loss observed in those eating exclusively nutritious ultra-processed foods doesn’t guarantee the same results for individuals who don’t typically consume many ultra-processed foods.
The study’s authors also emphasize the need to address the broader food environment. “We need healthier foods that meet dietary guidelines to be more accessible to people,” said Dicken, a researcher involved in the study. This means tackling the financial barriers that frequently enough make less nutritious, ultra-processed options the most convenient and affordable choice for many families.
Reformulation Isn’t the Whole Answer
The current trend of fortifying ultra-processed foods – adding protein to waffles and ice cream, such as, or reducing sodium – is a step in the right direction, but it’s not a silver bullet. “Food reformulation can have beneficial effects,” Dicken said, “but it’s not going to be the solution.”
Ultimately, a more complete approach is needed, one that prioritizes access to affordable, minimally processed foods and empowers individuals to make informed choices about their diets. The study serves as a crucial reminder that simply making ultra-processed foods “healthier” doesn’t address the underlying issues driving overconsumption and its associated health consequences.
STAT’s coverage of chronic health issues is supported by a grant from Bloomberg Philanthropies. Our financial supporters are not involved in any decisions about our journalism.