Maternal smoking during pregnancy increases the risk of ADHD among offspring up to 3-fold. The higher the cotinine levels are in the mother’s blood during pregnancy the greater is the child’s risk of developing ADHD later in life.

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Maternal smoking during pregnancy increases the risk of ADHD among offspring up to 3-fold. The higher the cotinine levels are in the mother’s blood during pregnancy the greater is the child’s risk of developing ADHD later in life.