Paternal over- and under-nutrition program fetal and placental development in a sex-specific manner in mice
This study demonstrates that while sub-optimal paternal diets (including high-fat, low-protein, and methyl-supplemented variations) do not significantly impair male fertility in mice, they induce sex-specific alterations in fetal growth, placental gene expression, and the reduction of sexually dimorphic genes, thereby programming offspring development through mechanisms involving metabolic and Wnt signaling pathways.