考研英语阅读理解外刊原文阅读二.pdfVIP

Drinking Milk Before Bed: Is It a Good Idea? 睡前喝牛奶究竟好不好？ A handful of small animal and human studies demonstrate that consuming dairy products like milk and cheese before bed may help some people have a more restful night’s sleep, though the reason why remains unclear. 一些针对小动物和人类的研究表明，睡前饮用牛奶或奶酪等乳制品或许能给人们 带来更宁静的睡眠，但尚不清楚其中的缘由。 Most experts agree that milk’s sleep-promoting potential is likely related to specific chemical compounds or the psychological effects of having a soothing bedtime routine — or perhaps a combination of the two. 大多数专家都认为，牛奶之所以能够促进睡眠可能与特定的化合物有关，也可能 与睡前习惯带来的心理效应有关——或者两者兼而有之。 Certain compounds in milk — specifically tryptophan and melatonin — may help you fall asleep. 牛奶中的某些化合物（特别是色氨酸和褪黑素）或许有助于入睡。 Tryptophan is an amino acid found in a variety of protein-containing foods. It plays an important role in the production of the neurotransmitter known as serotonin . 色氨酸是一种存在于各种含蛋白质食物中的氨基酸。它在神经递质血清素的合成 过程中起着重要作用。 Serotonin boosts mood, promotes relaxation, and functions as a precursor in the production of the hormone melatonin. 血清素能提升情绪、促进放松，是褪黑激素产生的前体。 Melatonin, also known as the slee hormone, is released by your brain. It helps regulate your circadian rhythm and prepare your body for entering a sleep cycle. 褪黑素（也被称为睡眠激素）是由大脑释放的。它有助于调节你的昼夜节律，让 你的身体为进入睡眠周期做好准备。 The role of tryptophan and melatonin in sleep disorders is well established, and studies have found that taking supplements of these compounds ma improve sleep and reduce symptoms of anxiety and depression that can crop up at bedtime. 色氨酸和褪黑素在治疗睡眠障碍中的作用已经得到证实，研究发现，服用含有这 些化合物的补充剂可以改善睡眠，减少睡前可能出现的焦虑和抑郁症状。 However, there’s currently no evidence to suggest that a single glass of milk contains enough tryptophan or melatonin to significantl influence your body’s natural production of melatonin or to independently treat a disordered sleeping pattern. 然而，目前没有证据表明一杯牛奶含有足够的色氨酸或褪黑素，可以显著影响你 身体的褪黑素自然生成，或足以调节紊乱的睡眠模式。 Some experts suspect t