Early-life growth proved important for height in puberty and adulthood
Reports and Proceedings
Updates every hour. Last Updated: 7-Jun-2025 14:09 ET (7-Jun-2025 18:09 GMT/UTC)
Boys born to mothers who have polycystic ovary syndrome (PCOS) or who have higher levels of testosterone during the third trimester are more likely to be less physically active at age 7, according to research presented at the first Joint Congress between the European Society of Paediatric Endocrinology (ESPE) and the European Society of Endocrinology (ESE). Testosterone levels or PCOS in the mothers were not associated with physical activity in girls, but 7-year-old girls whose mothers had higher testosterone levels during pregnancy had lower muscle strength. The findings highlight the important role that maternal testosterone and PCOS may play in future development in boys and girls independently.
Three-year-old boys are more likely to have a shorter anogenital distance when their mothers have high levels of phthalates in their urine, according to research presented at the first Joint Congress between the European Society of Paediatric Endocrinology (ESPE) and the European Society of Endocrinology (ESE). In girls, the direct exposure to phthalates was associated with a shorter anogenital distance. The findings highlight how exposure to environmental pollutants can cause alterations in genital measurements during the first three years of life, which may affect sexual development and fertility later in life.