A fertility monitor is an electronic device which may use various methods to assist the user with fertility awareness. A fertility monitor may analyze changes in hormone levels in urine, basal body temperature, electrical resistance of saliva and vaginal fluids, or a combination of these methods. These devices may assist in pregnancy achievement.
However, at the moment there is insufficient evidence available to draw conclusions on the effectiveness of fertility monitoring on live births or pregnancies.
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Fertility monitor Wikipedia(Text) CC BY-SA