Why Miscarriages Happen: Key Causes You Should Know

Introduction

A miscarriage is the loss of a pregnancy before 20 weeks. Many people want to know the causes of a miscarriage. Understanding these causes can help ease worries and guide future choices. Although miscarriages are common, they can be emotionally hard. Still, knowing the reasons can help you feel more in control. According to the World Health Organization (WHO), about 10-20% of known pregnancies end in miscarriage. Let’s explore the main causes and what you can do.

What is a Miscarriage?

A miscarriage happens when a pregnancy ends on its own before the baby can survive outside the womb. Usually, this occurs in the first 13 weeks. Sometimes, it happens later but before 20 weeks. Many women may not even know they were pregnant when a miscarriage occurs. Often, it is not anyone’s fault. In fact, most miscarriages happen because of reasons beyond your control.

Common Causes of a Miscarriage

Several factors can lead to a miscarriage. However, most are due to natural problems in early pregnancy. Here are the most common causes:

Chromosomal Problems: Most miscarriages happen because the baby’s chromosomes are not normal. Chromosomes carry genes. If there is a mistake, the pregnancy may not develop as it should.

Blighted Ovum: Sometimes, a fertilized egg attaches to the womb but does not grow into a baby.

Molar Pregnancy: Rarely, tissue grows in the womb instead of a baby.

Maternal Health Conditions: Conditions like uncontrolled diabetes or thyroid disease can raise the risk.

Infections: Some infections, such as rubella or certain sexually transmitted infections, can cause miscarriage.

According to the Centers for Disease Control and Prevention (CDC), most miscarriages are not caused by anything the mother did or did not do.

Less Common Causes of a Miscarriage

While most miscarriages have natural causes, some less common factors may play a role. For example, problems with the womb or cervix can increase risk. Here are a few less common causes:

Uterine Abnormalities: Shape or structure problems in the womb can affect pregnancy.

Hormonal Imbalances: Low levels of certain hormones may make it hard for the pregnancy to continue.

Immune System Issues: Sometimes, the body’s defense system attacks the pregnancy by mistake.

Severe Injury or Trauma: Rarely, a serious accident can lead to miscarriage.

Exposure to Harmful Substances: Contact with toxins, radiation, or some medicines can increase risk.

Even so, these causes are not as common as chromosomal issues.

Risk Factors to Consider

Some women have a higher chance of miscarriage due to certain risk factors. Knowing these can help you talk with your doctor. Key risk factors include:

Age over 35 years

Previous miscarriages

Chronic health problems (like diabetes or high blood pressure)

Smoking, alcohol, or drug use

Being underweight or overweight

Severe stress

However, having one or more risk factors does not mean you will have a miscarriage. Many women with risks have healthy pregnancies.

When to Seek Medical Help

It is important to know when to call your doctor. If you notice any of these signs, seek help right away:

Heavy bleeding or passing large clots

Severe stomach pain or cramps

Fever or chills

Foul-smelling vaginal discharge

Early care can help prevent complications. Even if you are unsure, it is better to ask your healthcare provider.

Preventive Tips and Lifestyle Guidance

While not all miscarriages can be prevented, some steps may lower your risk. Here are some helpful tips:

Visit your doctor before trying to get pregnant

Manage chronic health problems with medical help

Avoid smoking, alcohol, and illegal drugs

Eat a balanced diet and maintain a healthy weight

Take prenatal vitamins with folic acid

Reduce stress with relaxation techniques

Follow your doctor’s advice on medicines and supplements

Remember, most women who have a miscarriage go on to have healthy pregnancies later. Support and good care can make a difference.

Take the first step towards a safer pregnancy by consulting Dr. Suryaprabavathy Selvam.