Myths vs facts: SHBG and Wechseljahre

Myth: SHBG is just a transport protein with no biological effect. Fact: SHBG regulates the bioavailability of estrogen and testosterone. During menopause, SHBG levels often decline, leading to a relative excess of free testosterone – a factor linked to weight gain, insulin resistance, and more frequent hot flashes. Another myth: High SHBG is always beneficial. In reality, excessively high SHBG can reduce estrogen activity so much that it worsens symptoms like vaginal dryness or mood swings. Evidence comes from large cohort studies and meta-analyses showing SHBG is a dynamic marker influenced by diet, exercise, and hormonal status. However, interpreting SHBG in isolation without clinical context is misleading. A single SHBG measurement does not diagnose menopause-related issues; the ratio to total estrogen and testosterone provides a fuller picture. Bottom line: SHBG is a useful but not standalone parameter in menopause management.