Ultra-Processed Diets Linked to Lower Fertility Odds in Women, McMaster Study Finds

A U.S. study analyzing NHANES data from over 2,500 women found that higher intake of ultra-processed foods is associated with about 60% lower odds of conceiving, independent of age, weight and lifestyle factors. A Mediterranean-style diet showed a positive link to fertility, though the benefit diminished when obesity was accounted for. The researchers cite possible hormonal disruption from additives and chemicals in processed foods; the study is cross-sectional, so it shows association, not causation.