I am inclined to agree. At least one study (that I have found) has showed a clear influence of pesticides and pollutants ingested by or exposed to the mother to the child's probability of being obese.

Liu Y, Peterson KE. Maternal Exposure to Synthetic Chemicals and Obesity in the Offspring: Recent Findings. Curr Environ Health Rep. 2015;2(4):339–347. doi:10.1007/s40572-015-0068-6

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5482496/