SHBG and polycystic ovary syndrome: A 12-week VLCKD intervention in obese, non-diabetic women with PCOS and regular menstrual cycles resulted in a significant decrease in serum anti-Müllerian hormone levels, a significant increase in progesterone and serum sex hormone-binding globulin levels, and VLCKD may also be beneficial for ovarian reserve and luteal function (Magagnini et al., 2022).