Women’s Health: Ultra-processed foods possibly linked to fertility struggles –Researchers

*Researchers from McMaster University, in the United States, in a new study, found that women with a higher intake of ultra-processed foods higher fertility odds

Isola Moses | ConsumerConnect

If you have ever wondered whether what you eat could affect your chances of getting pregnant, new research suggests the answer might be yes — especially when it comes  to women’s consumption of ultra-processed foods.

These are the packaged, ready-to-eat items that make up a big part of several modern diets, from snack foods to frozen meals.

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A recent study from researchers at McMaster University, in the US, found that women who ate fewer ultra-processed foods had a higher likelihood of conceiving.

Women experiencing infertility tended to consume more ultra-processed foods and follow less healthy dietary patterns.

Importantly, this connection held up even after researchers accounted for other factors that are typically linked to fertility, like age, body weight, and lifestyle habits.

It is noted that the findings don’t prove that ultra-processed foods directly cause infertility.

However, they do point to a meaningful connection between diet quality and reproductive health — one that goes beyond the usual focus on calories or weight alone.

Researcher Anthea Christoforou, in a news release, said: “Most of what we hear about ultra-processed foods focuses on calories and obesity.

“But our findings suggest something potentially more complex: There seems to be another mechanism at play which may reflect pathways beyond calories or weight, including chemical exposures that have been hypothesised in prior literature.”

How the study worked

In order to explore this link, researchers analysed data from US women collected through the National Health and Nutrition Examination Survey (NHANES) between 2013 and 2018.

They also examined participants’ dietary habits — specifically how much of their daily food intake came from ultra-processed foods — alongside self-reported fertility status. Ultra-processed foods were identified using a standard classification system that groups foods based on how heavily they’re industrially processed, agency report said.

The researchers further considered how closely participants followed a Mediterranean-style diet, which emphasises whole foods, such as fruits, vegetables, whole grains, and healthy fats.

It was gathered that in making the results more reliable, the analysis adjusted for a range of variables that could influence fertility, including obesity and other lifestyle factors.

The move helped to isolate the potential role of ultra-processed foods themselves, rather than other overlapping health behaviours.

Research findings

The results showed a clear pattern: women who reported infertility tended to consume more ultra-processed foods than those who did not.

In fact, ultra-processed foods made up about 31 percent of daily intake among women with infertility, compared to lower levels among those who were fertile, researchers reported.

Overall, higher consumption of these foods was linked to significantly lower odds of fertility — even after accounting for other health and lifestyle factors.

They also noted that women experiencing infertility generally had lower adherence to healthier eating patterns, like the Mediterranean diet.

While the study doesn’t establish cause and effect, it suggests there may be something about ultra-processed foods — beyond just their calorie content — that could influence reproductive health.

That could include factors like additives or the way these foods are manufactured, though more research is needed to fully understand the mechanisms.

For now, the takeaway is fairly straightforward: diet quality may be one piece of the fertility puzzle, and the degree of food processing could matter more than many people realise.

“Processing affects foods in ways that aren’t reflected in nutrients alone — from chemical exposures during manufacturing to ingredients that displace whole, protective foods,” researcher Angelina Baric said.

“It’s not about perfection — it’s about noticing how food is processed, choosing more foods in their natural states and picking ingredients you recognise.

“Even that simple shift can lower exposure to things we still don’t fully understand.”

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