Rising air pollution levels combined with dense fog have become a serious health concern in many parts of the country. While smog affects everyone, doctors warn that it can be especially harmful for pregnant women and their unborn babies. Recent medical studies suggest that prolonged exposure to polluted air during pregnancy may impact a baby’s brain development.

According to research published in the National Library of Medicine, fine pollution particles such as PM2.5 and PM10, along with gases like nitrogen dioxide and carbon monoxide, can be inhaled by the mother and enter the bloodstream. These toxic particles can cross the placental barrier, potentially affecting the developing fetus.

How does pollution affect the baby’s brain?

Dr. Himanshu Bhadani from the Pediatrics Department at AIIMS Delhi explains that exposure to smog and pollution can reduce the oxygen supply reaching the baby, a condition known as hypoxia. Since a baby’s brain is rapidly developing inside the womb, reduced oxygen levels can interfere with the growth of brain cells.

This oxygen deficiency can cause inflammation and oxidative stress in the fetal brain, which may increase the risk of:

• Delayed brain development

• Reduced learning ability later in life

• Weakened immunity

• Higher chances of respiratory problems such as asthma

Pregnant women living in highly polluted areas are considered to be at greater risk.

Why fog makes the situation worse

While fog itself is not toxic, it traps pollution particles near the ground, allowing harmful substances to remain in the air for longer periods. This is why winter mornings and evenings are particularly dangerous, as smog levels peak during these hours.

Safety measures for pregnant women

Doctors advise pregnant women to take extra precautions during high pollution days:

• Wear a protective mask when stepping outdoors

• Avoid going out during early morning and late evening hours

• Use an air purifier at home if possible

• Keep windows closed during peak pollution times

• Follow a nutritious diet as advised by a doctor

• Stay well hydrated

Experts emphasize that occasional exposure is not a cause for panic, but continuous exposure to polluted air should be avoided as much as possible to protect both the mother and the baby.