Luteinizing Hormone (LH)

← Back to Library

Top of the page

Luteinizing Hormone (LH)

Luteinizing hormone (LH) is produced by the pituitary gland. In women, LH helps regulate the menstrual cycle and egg production (ovulation); in men, LH stimulates the production of testosterone, which plays a role in sperm production.

Women's LH levels normally vary with the phase of the menstrual cycle, rapidly increasing just before ovulation occurs. This "LH surge" is a dependable sign that a woman is in a fertile time of her cycle. Men's LH levels normally remain constant.

Abnormally high or low LH levels can be a sign of an inability to produce eggs or sperm.

Current as of: October 24, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

This information does not replace the advice of a doctor. Ignite Healthwise, LLC, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.

Explore the Full Health and Wellness Library

Looking for easy to understand information you can trust? The health and wellness content is created and reviewed by clinicians to ensure accuracy. We suggest you use this resource as research for conversations with your doctor or those you care about.

Explore the Library

Community and Health Events

We regularly host free events to help you stay informed, connected, and inspired. We offer local in-person gatherings and virtual sessions you can attend from the comfort of home. View our calendar for all upcoming events.

Explore all Events