The following results were reported:

GDM risk was associated with specific variants of genes involved in vitamin D and glucose metabolism. Women with these variants had increased risk of GDM with higher consumption of sweets and sausage and decreased risk of GDM with adherence to the Mediterranean diet.
The risk of hypertension was elevated in women with vitamin D deficiency in the second trimester.
RSA risk was elevated in women who had specific genetic variants, but among women with these genotypes, the risk was reduced for those who consumed more fresh vegetables and fruits.
IDA risk was higher for women with genetic variants of a gene related to the capture of free hemoglobin and for women who didn’t consume sufficient dietary iron.
Multiple genetic variants elevated the risk of GWG, but women with those genotypes experienced less weight gain when they consumed less dietary fat.
SGA risk was higher in infants whose mothers carried specific genetic variants and did not consume folic acid supplements.
Infants born to mothers with certain genetic variants to vitamin D-related genes and vitamin D deficiency had lower birth weights and larger head circumferences. Among mothers with the same genotypes, higher carbohydrate intake was associated with infants with shorter birth lengths.
Another genetic variant to a vitamin D-related gene, coupled with low maternal vitamin D levels, was associated with a higher risk of preterm birth.
CHD risk was elevated in infants born to women who had specific genetic variants and were deficient in folic acid or vitamin B12.
VSD risk was elevated in infants born to women with a genetic variant (to the gene MTHFDa) and who had higher intakes of pickled vegetables and smoked, barbecued, or fried foods.

The roles of genetic and dietary factors in healthy pregnancies Original paper