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Theories about causes of endometriosis. According to a theory known as the transplantation theory, cells from the lining of the womb get into other parts of the body and settle there. more...
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(PantherMedia / Wawrzyniec Korona) Some women who have premenstrual syndrome (PMS) have such bad symptoms on the days before their period that they can’t go about their usual activities. more...
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Period pain is very widespread. Our information for girls describes where the pain comes from and what they can do about it. more...
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Endometriosis causes serious pain in some women, while others only have a little discomfort or notice nothing at all. more...
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Research summaries
(PantherMedia / Cristi L) Anti-inflammatory painkillers like diclofenac, ibuprofen and naproxen can help relieve severe period pain. These medications sometimes have side effects such as stomach problems. more...
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Videos
The menstrual cycle lasts about 28 days on average in many women. Each cycle starts with menstrual bleeding over several days. But why does this happen? This film explains what happens in women’s bodies during their monthly cycle and describes problems that can arise during menstruation. more...
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Videos
Women who have heavy periods with painful cramps every month often find their periods pretty distressing. Heavy periods can lead to anemia over time, and treatment might be needed. But when are periods considered to be “too heavy”, and what are the possible causes of heavy periods? This film is about the treatment options and what you can ... more...
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Real-life stories
(Norman Pogson / iStock / Thinkstock) Becky, 35 years old "I find it important to accept the illness, to make sure I do what is best for me, and to fight for my interests. more...
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Quizzes
About 9 to 14 out of 100 women have heavy periods. Read about the causes, effects, treatments and dealing with menstrual problems in everyday life. more...
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Real-life stories
"Getting through menopause . . . I guess you don't always have to do something about it. I don’t have to feel fantastic every single day. If I did then I wouldn’t be able to tell the difference anymore. Everyone has to find out for themselves what's best for them." more...
