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The 16 pages that link to Menstruation, each with the reason it gives.

• Iron deficiency anemiaRelated: Heavy menstrual bleeding can steadily remove more iron than the body replaces.

• Iron deficiencyRelated: Heavy or prolonged menstrual bleeding can exceed iron replacement.

• VaginaRelated: Menstrual flow passes through the vaginal canal on its way out.

• Intrauterine deviceRelated: Bleeding patterns can change after insertion, depending on device type.

• Female reproductive systemRelated: It is the visible outcome of cycle-related changes when implantation does not occur.

• Luteal phaseRelated: Without pregnancy, corpus-luteum regression and falling hormones lead to bleeding.

• Premenstrual syndromeRelated: Symptoms characteristically improve shortly after menstruation starts.

• LevonorgestrelRelated: Intrauterine levonorgestrel can reduce heavy menstrual bleeding by thinning the uterine lining.

• Judy BlumeRelated: Margaret’s questions about menstruation helped make it discussable in children’s fiction.

• Feminine hygieneRelated: Menstrual care products are a major part of what this marketing term covers.

• Vaginal bleedingRelated: It is the most common expected source of vaginal bleeding during reproductive years.