There is a number on your standard hormone panel that predicts insulin resistance in women with 97% sensitivity. Most physicians glance at it, note it as normal, and move on. In this video I explain what SHBG is, why low levels are a direct signal of chronically elevated insulin, and why this marker may be the most important number on your lab page β especially if you have PCOS, unexplained weight gain, or have been told your labs are normal.
Clinical sources: Biernacka-Bartnik et al, 2022 Chen et al, 2021 Wallace et al, Clinical Endocrinology, 2013 Katsuki et al, JCEM, 1996