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Ultra-Processed Foods Harm Male Fertility, Study Warns
24 Mar
Summary
- Ultra-processed foods linked to lower conception rates in men.
- Higher UPF intake in women associated with smaller embryos.
- Experts suggest small dietary changes can support fertility.

A recent study indicates that consuming ultra-processed foods (UPFs) may adversely affect male fertility and early embryonic development. The research analyzed dietary habits and fertility outcomes for couples in the Netherlands.
The findings revealed that men with higher UPF consumption had a reduced likelihood of conceiving quickly and an increased risk of subfertility, defined as taking over 12 months to conceive or requiring fertility treatment. These associations persisted even after controlling for other lifestyle factors.
Among women, UPF intake was not directly linked to fertility but was associated with smaller embryo crown-rump length and yolk sac size in early pregnancy. These effects were most pronounced in the first trimester.
While the study highlights associations, researchers emphasize that more research is needed to establish causal effects. Experts suggest that modest dietary changes, such as opting for whole foods over processed snacks, can be beneficial for fertility and are best made together by couples.
The study adds to evidence that male partners should also be actively involved in preconception care, an area traditionally overlooked. Health professionals recommend a balanced diet, regular exercise, and avoiding smoking as crucial for fertility outcomes.



