These fell into three categories: genes affecting anatomy, genes affecting appetite and genes affecting the digestion and metabolismof nutrients.

这分为三类：影响动物体结构的基因，影响食欲的基因和影响营养物质消化和新陈代谢的基因。

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Lack of sleep, as this can trigger metabolic changes that cause weight gain by affecting hormones that control appetite and satiety.

缺乏睡眠。因为缺乏睡眠能够激发代谢上的变化，进而影响激素水平，这些激素能够调控食欲和饱腹感的感知，最终使体重上升。

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Sometimes patients can not sleep long, may have dizziness, mental depression and loss of appetite and other symptoms of neurasthenia, seriously affecting the quality of life.

有时患者长期不能安睡，可有头晕、精神忧郁及食欲不振等神经衰弱症状，严重影响生活质量。

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