Daily selenium intake in a moderate selenium deficiency area of Suzhou, China

► The estimated Se intake in Suzhou was 43.9 ± 3.8 μg day−1. ► Pork and cereals were the major sources of Se daily intake. ► The hair Se content was 389.9 μg kg−1 for male and 322.9 μg kg−1 for female. ► The hair Se content was a bioindicator of the Se intake level over a longer period.