Maternal Anaemia May Affect Brain Development in Babies: Study

Anaemia during pregnancy may have a greater effect on a baby’s development than previously understood. A new study published in the journal ‘Brain Communications’ has found that babies born to mothers with anaemia had smaller brains than babies born to mothers without the condition. The differences were particularly noticeable in areas of the brain involved in movement, learning and emotional control.

The study was carried out by researchers from King’s College London and the University of Cape Town. More than 300 mothers and their babies in Cape Town were followed, with the babies having brain scans several times between the ages of three months and two years.

What Did Researchers Find?

Researchers found that babies born to mothers with anaemia had, on average, a total brain volume around 4% smaller than babies born to mothers without anaemia. Importantly, the mothers included in the study had only mild anaemia. This suggests that even relatively mild anaemia during pregnancy may be associated with differences in early brain development.

Three areas showed notable differences: the putamen, caudate nucleus and corpus callosum. These parts of the brain are involved in several important functions, including processing information, controlling emotions and executive functions such as planning and decision-making.

The differences did not simply disappear as the children grew. In fact, the gap in some areas became larger during the first two years of life. For example, the corpus callosum was about 4% smaller at 12 months and about 6% smaller by 24 months among babies whose mothers had been anaemic.

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Why The Findings Are Crucial

The findings are important because previous research has linked maternal anaemia with lower developmental scores among children. The researchers believe the new brain-imaging evidence may help explain some of these earlier observations. However, the study shows an association between maternal anaemia and brain differences; it should not be interpreted as proof that every child born to an anaemic mother will develop cognitive problems.

Anaemia is common during pregnancy. More than one-third of pregnant women worldwide are affected, with the highest rates reported in sub-Saharan Africa and South Asia. Iron deficiency is a common cause, although infections and other health conditions can also contribute to anaemia.

The researchers therefore stress the importance of identifying and treating anaemia, particularly during pregnancy. Screening for anaemia and iron deficiency can help healthcare professionals identify women who may need treatment. Depending on the individual situation, treatment may include oral iron or, when appropriate, intravenous iron.

The study also highlights the importance of addressing the wider causes of anaemia. Improving nutrition alone may not be enough when infections or other health problems are contributing to the condition.

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Detecting Brain Differences in Babies

An interesting part of the research was the use of newer, portable MRI technology. The researchers found that lower-field MRI scanners were sensitive enough to detect the brain differences identified by traditional high-field scanners. This could make brain research and monitoring more practical in areas where conventional medical equipment is difficult to access.

Final Word

Overall, the study strengthens the case for treating anaemia as an important maternal and child health issue. Protecting a mother’s health during pregnancy is not only about ensuring a safe pregnancy and birth; it may also play an important role in supporting the developing brain of the next generation.