AMH and polycystic ovary syndrome: However, recent insights indicate that increased AMH levels are primarily due to enhanced production by individual follicles (Das et al., 2008) and may also correlate with the severity of PCOS (La Marca et al., 2004a; Nardo et al., 2009; Piouka et al., 2009; Lin et al., 2011; Delamuta et al., 2024).