No single number applies to every woman, and the blunt "shortest duration possible" guidance that many women still remember has been softened considerably as the understanding matured. The modern approach treats duration as an individual risk-benefit judgment that gets revisited over time, not a fixed prescription length set on day one.
For some women that means a few years through the worst of the transition; for others, with their clinician's agreement, it means longer. The key shift is from a rule to a conversation.

