Radiation menopause: Menopause induced by radiation.
Medical Author:
Melissa Conrad Stöppler, MD
Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.
Melissa Conrad Stöppler, MD
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Medical Editor:
William C. Shiel Jr., MD, FACP, FACR
William C. Shiel Jr., MD, FACP, FACR received a Bachelor of Science degree with honors from the University of Notre Dame. There Dr. Shiel was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.
William C. Shiel Jr., MD, FACP, FACR
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Note: We recommend you print this page to use as a reference for your consultation with your doctor.
Read more questions to ask your doctor about menopause.
Menopause is defined as the state of an absence of menstrual periods for 12 months. The menopausal transition starts with varying menstrual cycle length and ends with the final menstrual period. Perimenopause means "the time around menopause" and is often used to refer to the menopausal transitional period. It is not officially a medical term, but is sometimes used to explain certain aspects of the menopause transition in lay terms. Postmenopause is the entire period of time that comes after the last menstrual period.
Menopause is the time in a woman's life when the function of the ovaries ceases. The ovary (female gonad), is one of a pair of reproductive glands in women. They are located in the pelvis, one on each side of the uterus. Each ovary is about the size and shape of an almond. The ovaries produce eggs (ova) and female hormones such as estrogen. During each monthly menstrual cycle, an egg is released from one ovary. The egg travels from the ovary through a Fallopian tube to the uterus.
The ovaries are the main source of female hormones, which control the development of female body characteristics such as the breasts, body shape, and body hair. The hormones also regulate the menstrual cycle and pregnancy. Estrogens also protect the bone. Therefore, a woman can develop osteoporosis (thinning of bone) later in life when her ovaries do not produce adequate estrogen.
Perimenopause is different for each woman. Scientists are still trying to identify all the factors that initiate and influence this transition period.
The average age of menopause is 51 years old. But there is no way to predict when an individual woman will enter menopause. The age at which a woman starts having menstrual periods is also not related to the age of menopause onset. Most women reach menopause between the ages of 45 and 55, but menopause may occur as earlier as the 30s or 40s or may not occur until a woman reaches her 60s. As a rough "rule of thumb," women tend to undergo menopause at an age similar to that of their mothers.
Perimenopause, often accompanied by irregularities in the menstrual cycle along with the typical symptoms of early menopause, can begin up to 10 years prior to the last menstrual period.
Next: What conditions can affect the timing of menopause?
Medical Author:
William C. Shiel Jr., MD, FACP, FACR
William C. Shiel Jr., MD, FACP, FACR received a Bachelor of Science degree with honors from the University of Notre Dame. There Dr. Shiel was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.
William C. Shiel Jr., MD, FACP, FACR
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In radiation therapy (also called radiotherapy), high-energy rays are used to damage cancer cells and stop them from growing and dividing. A specialist in radiation therapy is called a radiation oncologist.
What are the types of radiation therapy?
Like surgery, radiation therapy is a local treatment; it affects
cancer cells only in the treated area. Radiation can come from a
machine (external radiation). It can also come from an implant (a
small container of radioactive material) placed directly into or near
the tumor (internal radiation). Some patients receive both kinds of
radiation therapy.
External radiation therapy is usually given on an outpatient basis in a hospital or clinic 5 days a week for a number of weeks. Patients are not radioactive during or after the treatment.
For internal radiation therapy, the patient stays in the hospital for a few days. The implant may be temporary or permanent. Because the level of radiation is highest during the hospital stay, patients may not be able to have visitors or may have visitors only for a short time. Once an implant is removed, there is no radioactivity in the body. The amount of radiation in a permanent implant goes down to a safe level before the patient leaves the hospital.
What are the side effects of radiation therapy?
With radiation therapy, the side effects depend on the treatment dose and the part of
the body that is treated. The most common side effects are tiredness, skin
reactions (such as a rash or redness, permanent pigmentation, and scarring) in
the treated area, and loss of appetite. Radiation therapy can cause
inflammation of tissues and organs in and around the body site
radiated. This can cause symptoms that depend on what organs are
affected and to what degree. For example, radiation can inflame skin to cause a burn or permanent pigmentation. It can also irritate the colon and cause diarrhea. Radiation therapy can also
cause a decrease in the number of white blood cells, cells that help
protect the body against infection.
Although the side effects of radiation therapy can be unpleasant, they can usually be treated or controlled. It also helps to know that, in most cases, they are not permanent. To a great degree, the possible side effects of radiation therapy depend on the location and the amount of radiation.