The link of the anemia with IBWGA could be due to poor dietary condition of the women and/or poor absorption rate, which is important for the development/growth of the fetus [37], while the link for diabetes with IBWGA, with the most probable birth outcome LGA [38], could be due to the increase in placental transport of nutrients like glucose, amino acids, and fatty acids stimulating the fetus to produce endogenous insulin and insulin-like growth factor 1 that helps to utilize the nutrients and results in a large size of the fetus for gestational age [39]. The gene discussed is IGF1; the disease is anemia (phenotype).