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1.
July 2015

FAQ188, July 2015

How does multiple pregnancy occur? A twin, triplet, or higher-order pregnancy (four or more babies) is called multiple pregnancy. If more than one egg is released during the menstrual cycle and each is fertilized by a sperm, more than one embryo may implant and grow in your uterus. This type of pregnancy results in fraternal twins (or more). When a single fertilized egg splits, it results in multiple identical embryos. This type of pregnancy results in identical twins (or more). Identical twins are less common than fraternal twins.


FAQ162, May 2011

What are menopause and perimenopause? Menopause is defined as the absence of menstrual periods for 1 year. The average age of menopause is 51 years, but the normal range is 45 years to 55 years. The years leading up to this point are called perimenopause. This term means "around menopause." This phase can last for up to 10 years. During perimenopause, shifts in hormone levels can affect ovulation and cause changes in the menstrual cycle.


3.
May 2017


4.
September 2017

FAQ028, September 2017

What is vaginitis? Vaginitis is an inflammation of the vagina. As many as one third of women will have symptoms of vaginitis sometime during their lives. Vaginitis affects women of all ages but is most common during the reproductive years.


FAQ180, April 2017

What is sterilization? Sterilization is a permanent form of birth control.


FAQ056, April 2017

Pregnancy What is a preconception care checkup? Who should have a preconception care checkup? Why is a healthy diet important? How can I make sure my diet is healthy? How can being overweight affect my pregnancy? How can I lose weight if I am overweight? How can being underweight affect my pregnancy? Should I take a vitamin supplement? Why is it important for me to get enough folic acid before I get pregnant? Why is it important for me to get enough iron? Can my lifestyle affect my pregnancy? How can my environment affect my pregnancy? Ca...


7.
October 2012

FAQ013, October 2012

What is endometriosis? Endometriosis is a condition in which the type of tissue that forms the lining of the uterus (the endometrium) is found outside the uterus.


FAQ065, June 2014

What are the dangers of smoking? Smoking is a leading cause of death in women. Lung cancer causes more deaths in women than any other type of cancer, including breast cancer and ovarian cancer. Another smoking-related disease, heart disease, is currently the number one killer of women in the United States. Death occurs earlier in women who smoke. On average, female smokers die 12 years earlier than female nonsmokers.


9.
July 2017

FAQ113, July 2017

What is human immunodeficiency virus (HIV)? Human immunodeficiency virus (HIV) is the virus that causes acquired immunodeficiency syndrome (AIDS).


FAQ087, November 2016

What is preterm labor? Preterm labor is defined as regular contractions of the uterus resulting in changes in the cervix that start before 37 weeks of pregnancy. Changes in the cervix include effacement (the cervix thins out) and dilation (the cervix opens so that the fetus can enter the birth canal).


American College of Obstetricians and Gynecologists
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