State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
USDA, Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center, Parlier, CA 93648, USA.
Nutrients. 2014 Mar 14;6(3):1103-14. doi: 10.3390/nu6031103.
The selenium (Se) content in human hair is useful as an indicator of human Se intake and status. In this regard, when measuring the hair Se concentrations in Chinese inhabitants across northeast to southeast China, the results indicated that generally 84% of all residents have normal hair Se content. Between the sexes, the average hair Se content of males was higher than that of females, irrespective of districts. When comparing geographical regions, the average hair Se content of southern residents was greater than that of northern residents, regardless of gender. Historically, the overall hair Se content of today's inhabitants decreased between 24% and 46% when compared with the inhabitants living in the same geographic region 20 years ago. The decrease of hair Se content may be related to the overall decrease of grain consumption and the lower Se content in the staple food rice.
头发中的硒（Se）含量可用作人类硒摄入和状况的指标。在这方面，当测量中国东北地区到东南地区居民的头发硒浓度时，结果表明，一般来说，84%的居民头发硒含量正常。无论地区如何，男性的平均头发硒含量均高于女性。在比较地理区域时，无论性别如何，南方居民的平均头发硒含量均大于北方居民。从历史上看，与 20 年前生活在同一地理区域的居民相比，今天居民的整体头发硒含量下降了 24%至 46%。头发硒含量的下降可能与谷物总摄入量的减少以及主食大米中的硒含量降低有关。
