Smoking during pregnancy and infantile colic

Area of Science:

• Pediatrics
• Obstetrics
• Epidemiology

Background:

• Infantile colic (IC) affects a significant number of infants, causing distress to both infants and parents.
• The etiology of IC is multifactorial, with various environmental and lifestyle factors being investigated.
• Maternal smoking is a prevalent behavior with known adverse effects on infant health.

Purpose of the Study:

• To investigate the potential association between maternal smoking during pregnancy and the development of infantile colic (IC).
• To quantify the risk of IC in relation to the intensity and timing of maternal smoking.

Main Methods:

• A follow-up study involving 1820 mother-infant pairs from Denmark.
• Data collected via self-administered questionnaires at 16 and 30 weeks gestation and 8 months postpartum.
• Infantile colic diagnosed at 8 months based on crying criteria (Wessel's criteria).

Main Results:

• Infantile colic was observed in 10.8% of the infants.
• Maternal smoking of 15+ cigarettes/day during pregnancy or postpartum showed a twofold increased risk of IC.
• Continuous smoking throughout pregnancy and postpartum resulted in a 1.5-fold increased risk of IC.
• These associations remained significant after adjusting for multiple confounding factors.

Conclusions:

• Maternal smoking during pregnancy is associated with an increased risk of infantile colic.
• The findings suggest that smoking cessation interventions during pregnancy may help reduce the incidence of IC.
• Further research could explore the biological mechanisms linking maternal smoking to infant colic.