Placental Growth Factor Trajectories During Pregnancy and Child ADHD.

Placental growth factor trajectories across pregnancy trimesters differ in women whose children later received an ADHD diagnosis, indicating trimester-specific variation linked to later ADHD status.

• Why it matters: It addresses whether prenatal placental growth signals change over time in a way that is associated with later ADHD, filling a gap in trajectory-based evidence.
• What they did: In a cohort design, placental growth factor was measured repeatedly across pregnancy and analyzed by trimester trajectories in mothers of children who were later diagnosed with ADHD.
• The result: The study finds trimester-to-trimester differences in placental growth factor trajectories for this group, supporting the idea that prenatal timing of placental signals may be informative for ADHD risk.

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