A new study by Uppsala University in Sweden shows that junk food harms sleep. Healthy volunteers ate both unhealthy and healthy diets randomly. A poor diet leads to worse sleep quality than a healthy diet.

瑞典烏普薩拉大學(xué)的一項新研究表明，垃圾食品有害睡眠。健康的志愿者隨機進行不健康和健康的飲食。與健康飲食相比，不良飲食會導(dǎo)致睡眠質(zhì)量下降。

Some studies link diet to sleep changes， but few examine how diet directly affects sleep. One method is to give participants various diets to observe the effects randomly. Jonathan Cedernaes， Physician Professor at Uppsala University said， “Both poor diet and poor sleep increase the risk of several public health conditions. As what we eat is so important for our health， we thought it would be interesting to investigate whether some of the health effects of different diets could involve changes to our sleep.”

一些研究將飲食與睡眠變化聯(lián)系起來，但研究飲食如何直接影響睡眠卻很少。一種方法是給參與者不同的餐食以隨機觀察睡眠效果。烏普薩拉大學(xué)的內(nèi)科教授喬納森·塞德娜斯說：“不良飲食和睡眠不足都會增加患多種公共衛(wèi)生疾病的風(fēng)險。由于我們吃的東西對我們的健康如此重要，我們認為調(diào)查不同飲食對健康的一些影響是否會涉及我們睡眠的變化將是有趣的?！?/p>

Past studies show that sugary diets can lead to poorer sleep. Cedernaes notes that rest involves various physiological states such as deep sleep. However， no study compared deep sleep after unhealthy versus healthy diets in the same person. This is crucial because rest is dynamic， consisting of different stages with different functions and brain activity patterns. Understanding how diets affect these stages is essential， as factors like insomnia and aging can also impact sleep quality.

The study allowed 15 healthy young men to stay in a sleep lab for days. They ate healthy and unhealthy diets， with calories matching their needs. An unhealthy diet has more sugar， fat， and processed foods. They ate each diet for a week while their sleep and activities were monitored. Results showed junk food could have cut the deep sleep time.

過去的研究表明，含糖飲食會導(dǎo)致睡眠質(zhì)量下降。塞德娜斯指出，休息涉及各種生理狀態(tài)，如深度睡眠。然而，沒有研究比較同一個人在不健康飲食和健康飲食后的深度睡眠。了解這一點至關(guān)重要，因為休息是動態(tài)的，由具有不同功能和大腦活動模式的不同階段組成。了解飲食如何影響這些階段至關(guān)重要，因為失眠和衰老等因素也會影響睡眠質(zhì)量。

這項研究讓15名健康的年輕男性在睡眠實驗室待了一段時間。他們進行健康和不健康的飲食，并且熱量符合他們的需求。不健康的飲食有更多的糖、脂肪和加工食品。這兩種飲食他們各進行一周，同時監(jiān)測他們的睡眠和活動。結(jié)果顯示，在吃了垃圾食品后深度睡眠時間會縮短。