To our knowledge, only a few population-based studies have explored the relationship between maternal age and children’s health. In a UK-based study, Sutcliffe et al. examined the associations of maternal age with child health and development at 9 months, 3 years, and 5 years of age . They found that older maternal age was generally associated with better health (i.e., unintentional injuries and hospital admissions) after controlling for various factors, including income, maternal education, and paternal age.