ESPE Yearbook of Paediatric Endocrinology

Proc Natl Acad Sci USA. 2021; 118 (7) e2003926118https://bit.ly/35huXbaBy analysing data from Israeli health records, including millions of hormone blood tests, the authors find peaks during winter−spring in the circulating levels of all primary hormones involved in human growth, stress, metabolism and reproduction. By contrast, the pituitary-derived regulatory hormones peak in summer. This circannual c...