Some 'forever chemicals' might affect pregnancy sugar levels more in women who weighed less before pregnancy — and your pre-pregnancy weight could change how these chemicals impact your health while pregnant.

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Pro

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Against

Evidence from Studies

Supporting (1)

42

Community contributions welcome

42

Per- and Polyfluoroalkyl Substances During Pregnancy and Gestational Diabetes: The Environmental Influences on Child Health Outcomes (ECHO) Cohort

Cohort Study

Human

2026 May 1

The study found that certain PFAS chemicals were linked to a lower chance of gestational diabetes, especially in pregnant women who had a lower body weight before pregnancy. This supports the idea that body weight can change how these chemicals affect diabetes risk during pregnancy.

Contradicting (0)

0

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Per- and Polyfluoroalkyl Substances During Pregnancy and Gestational Diabetes: The Environmental Influences on Child Health Outcomes (ECHO) Cohort

Score: 42

DOI: 10.2337/dc25-1340

Similar Assertions

Pregnant women in the U.S. with more PFAS chemicals in their blood don’t seem to get gestational diabetes more often, so these chemicals might not raise the risk.

42

0

92%

Pregnant women in the U.S. who had higher levels of a mix of six 'forever chemicals' in their bodies were less likely to develop gestational diabetes — each step up in exposure was linked to about a quarter less chance of getting it.

42

0

79%