Research published this year showed a link between higher levels of the male hormone testosterone in the amniotic fluid surrounding a foetus and autistic traits when the child was eight.

今年发表的一项研究认为，羊水中雄性激素睾酮的水平过高，与儿童在8岁时显现出的孤独症特征，有着一定的联系。

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Bristol University research found that people who habitually slept just five hours each night had 15% more ghrelin, a hormone which increases feelings of hunger, than those who slept for eight hours.

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Eight EU countries are testing foodstuffs and pig herds for the presence of the hormone.

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