Finally, genetic variations have been reported as a risk factor for low milk supply (Golan and Assaraf 2020) (Golan and Assaraf 2020), and these typically involve variations in prolactin or prolactin receptors which are also often related to cases of infertility, suggesting that mothers with history of infertility might be in need to be provided with additional support. This evidence concerns the gene PRL and Infertility.