Prolactin

What Prolactin Means in Everyday Medical Language

Prolactin is a hormone made by the pituitary gland, a small organ located in the center of the brain. Its most well-known role is to help women produce milk during and after pregnancy. However, prolactin also affects many other body functions, including the immune system and hormone balance. In both men and women, prolactin influences reproductive hormones and can affect sexual health and fertility.

Why Prolactin Can Matter in Cancer Care

Some tumors, such as pituitary gland tumors called prolactinomas, adrenal tumors, or lung cancers, can produce hormones like prolactin in abnormal amounts. When prolactin levels are too high, it can disrupt the balance of male and female hormones. For example, elevated prolactin can lower testosterone in men and estrogen in women. This hormone imbalance may cause symptoms such as gynecomastia, which is the non-cancerous growth of breast tissue in men. Understanding prolactin levels can help doctors evaluate symptoms and guide treatment decisions.

What Patients Might See or Hear About Prolactin

You might hear about prolactin during discussions about hormone tests, tumor evaluations, or symptoms related to hormone changes. For example, if a blood test shows high prolactin, your care team may explain what this means for your health and whether it relates to a tumor or other condition. It’s important to remember that prolactin itself is not a diagnosis but a hormone that can be measured and interpreted in context.

How to Read Prolactin in Context

Because prolactin levels can be affected by many factors, including tumors, medications, and other health conditions, it’s important not to interpret the word alone as a diagnosis or treatment plan. If prolactin appears in your medical records or test results, ask your healthcare providers what it means for your specific case. They can explain how it relates to your symptoms, diagnosis, or treatment options.

Practical Questions to Ask Your Care Team

If prolactin is mentioned in your care, you might ask: What does my prolactin level mean? Could it be related to a tumor or other condition? How might prolactin affect my symptoms or treatment? Are there treatments to lower high prolactin if needed? Understanding these points can help you feel more informed and involved in your care.

Safety and Next Steps

This information is meant to help you understand prolactin and its possible role in your health. It does not replace medical advice or decisions made by your care team. If you have questions or concerns about prolactin or related symptoms, the best next step is to talk with your healthcare providers. They can provide explanations tailored to your situation and guide you on any needed tests or treatments.