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全网爆火的 “高钾晚餐”，既能助眠又能减脂？医生提醒：这类人群盲目补钾或致心脏骤停_我的网站

A |           　　“高钾晚餐”最近成了网络热词。    

    Air China flight CA723 takes off from the Beijing Capital International Airport in Beijing, on August 12, 2026. China launched the first international route featuring its homegrown C919 aircraft, connecting Beijing with Ulaanbaatar, capital of Mongolia. Photo: VCGAt around 4:58 pm on Wednesday, Air China flight CA723, a China-designed and manufactured C919 aircraft carrying 121 passengers, landed in Mongolian capital Ulaanbaatar, marking the latest milestone in the C919's commercial operation since its maiden commercial flight on May 28, 2023. The journey, which started in Beijing, was more than another takeoff, as it marked the C919's first international commercial flight and the beginning of regular international operations for China's homegrown large passenger aircraft.
As the C919 climbs higher and flies farther beyond China's borders, the runway behind it gradually disappears. What comes into focus instead is a much broader journey - one in which China's advanced engineering capabilities are reaching new markets, new partners and new possibilities around the world.
Historic moment
Hours before takeoff, a passenger surnamed Zhang, who was completing check-in procedures at Beijing Capital International Airport, said with a smile that he had stumbled into a "historic moment" by chance.
"I didn't pay much attention when I booked the ticket. I had heard that our homegrown C919 would soon begin international service, but I never expected it would be this very flight," Zhang told the Global Times on Wednesday. "I feel incredibly proud and excited."
From its maiden flight in Shanghai in 2017, when its first takeoff had many watching with bated breath, to its first scheduled international commercial service today, the C919's journey reflects China's sustained push to build up its capabilities in advanced aviation manufacturing. 
In recent years, China's top-level policies have strongly supported the development of high-end manufacturing. As the nation enters the opening year of the 15th Five-Year Plan period (2026-30), Chinese high-end manufacturing is increasingly translating technological breakthroughs into globally competitive products and solutions to contribute more broadly to industrial development and connectivity worldwide, Chinese experts noted.
And the C919 program is one of China's most ambitious endeavors to push the frontiers of high-end manufacturing.
The C919 is China's first self-developed trunk jetliner in accordance with international airworthiness standards and registered with independent intellectual property rights, according to the Xinhua News Agency on Wednesday.
Industry experts said the C919's progress reflects the rapid advance of China's broader manufacturing capabilities. Only a handful of countries are capable of developing single-aisle mainline passenger jets, and even fewer can bring a certified aircraft into commercial service.
The C919 aircraft's biggest achievement is that China has built the capability to take a large passenger jet from the drawing board all the way to a certified commercial product, covering overall design, airframe manufacturing, system integration and airworthiness approval, Wang Ya'nan, editor-in-chief of Beijing-based Aerospace Knowledge magazine, told the Global Times on Wednesday.
Much of the aircraft's design, major structural manufacturing and key systems are completed in China. He said this marks a significant step forward in China's civil aviation manufacturing capability, placing the country among the few able to develop a modern trunk-line jet and bring it into commercial service. Its expanding operations now represent the next stage of that progress, he added.
As of Monday, the C919 aircraft had served 57 routes linking 25 cities and handled more than 7.5 million passenger trips, said the Commercial Aircraft Corporation of China (Comac), the jet developer, according to Xinhua.
However, the C919 still faces intense competition in a global market dominated by established players. Experts said, however, that its competitiveness could continue to strengthen as operational experience grows and China accelerates indigenous development of key components and systems.
The UK-based aviation industry publication Airline Economics noted on July 13 that Malaysia Airlines continues to consider Comac's C919 as a future fleet option, but Western regulatory certification remains a key requirement before the carrier would consider operating the Chinese narrowbody.
This has also brought into sharper focus the dual considerations of certification and market demand among potential international customers for the C919, as Wang said this is precisely why the C919's continued expansion into new routes and markets matters. 
As cross-border services expand, the C919 will also need to move closer to international operating standards by building a support network that goes beyond its domestic maintenance system to cover the full cycle of international operations, including regulatory coordination, overseas maintenance facilities and spare-parts logistics, Han Tao, an expert with China's civil aviation think tank, told the Global Times on Wednesday. 
Strengthening these capabilities will be crucial to supporting more international routes and meeting the standards and operational needs of potential overseas customers, Han said.
Meanwhile, industry observers noted that China is also stepping up efforts to advance key components and systems for large commercial aircraft, an area that remains a major challenge for most countries' aviation industries, with mature capabilities still largely concentrated in the US, the UK and France.
Pushing boundaries, sharing opportunities
As the C919 flies farther, it is carrying with it not only China's advances in high-end manufacturing, but a broader story of how Chinese innovation is moving from breakthroughs at home to new possibilities shared with the world.
Underpinning that shift is China's expanding advanced manufacturing capacity and increasingly complete industrial ecosystem, which are helping turn technological breakthroughs into scalable products, a Chinese expert said.
China is upgrading its traditional industrial base while cultivating new sectors that could shape future competitiveness, seeking to move beyond scale and cost advantages toward a more innovation-driven industrial model, injecting new impetus into the country's high-quality development, according to Xinhua's another report on July 21.
The nation's 15th Five-Year Plan underscores the development of a modernized industrial system with advanced manufacturing as its backbone, the report said.
China's vast and diverse market provides advanced manufacturing with something equally important as technological capability: abundant real-world scenarios for testing, refinement and commercialization, Bian Yongzu, executive deputy editor-in-chief of Modernization of Management magazine.
This helps turn breakthroughs into mature, scalable products more quickly. Over the longer term, he said, advanced manufacturing will strengthen China's competitiveness by combining stronger industrial capabilities with complete supply chains and global cooperation, allowing more Chinese technologies, products and solutions to reach international markets, Bian said.
Aviation manufacturing, as a key pillar of high-end manufacturing, is benefiting from this broader push toward industrial upgrading and technological innovation.
At the fourth China International Supply Chain Expo held in Beijing in June, a complete aviation industry innovation chain stands out, spanning aviation materials, core forgings and low-altitude economy applications, drawing widespread attention to the participating companies, Xinhua reported.
Bian said that a complex project such as the C919 can drive coordinated upgrades across advanced materials, precision equipment, core components, system integration, logistics and skilled talent. In this sense, building a large commercial aircraft is a comprehensive test of a country's industrial depth, supply-chain coordination, and ability to turn sophisticated technologies into reliable commercial products.
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B | 有人称“高钾晚餐”有助眠效果，甚至能替代助眠药物，有人认为高钾饮食能更好地减重。不少人特意调整晚餐食谱，多吃菠菜、山药、菌菇、香蕉等高钾食物。这种网红饮食方式真的靠谱吗?8月24日，极目新闻记者采访了武汉专家。　　高钾晚餐可助眠但并非万能      　　所谓高钾晚餐，就是在晚餐中主动增加高钾食物的摄入，常见食材涵盖深色绿叶菜、薯类、豆类杂粮、菌菇及各类高钾水果。

C | 针对网友热议的助眠功效，专家表示该说法具备一定科学依据，并非空穴来风。     　　长江航运总医院·武汉脑科医院肾病风湿免疫科胡敏医师介绍，钾是人体细胞内含量最丰富的电解质，核心作用是维持心肌正常功能、调节人体血压，同时参与神经肌肉调节、神经递质分泌等多项生理活动。

D | 夜间人体血压波动、神经肌肉紧张、情绪焦虑紧绷，都是影响睡眠的重要因素。

E | 而晚餐适量补钾，能够平稳夜间血压、放松紧绷的神经与肌肉，辅助调节睡眠相关神经递质，进而起到改善睡眠质量的效果。

F |      　　胡敏指出，目前相关研究仅证实晚餐高钾摄入与睡眠改善存在相关性，而非直接因果关系。

G | 简单来说，高钾晚餐是辅助改善睡眠的方式，绝非治疗失眠的“良方”，更不能替代药物治疗、规律作息等常规睡眠调节手段，失眠人群切勿盲目依赖该方式。　　高钾饮食减的是水分而非脂肪      　　除了助眠，“高钾晚餐能快速减脂”的说法更是戳中众多减脂人群的需求，成为其火爆出圈的核心原因。对此，胡敏表示，高钾饮食确实能让体重短期下降，但这种“瘦身效果”存在明显误区，并非真正减脂。

H |      　　胡敏解释，人体体重短期波动，大多与水分潴留相关。钾元素可以有效促进身体排出多余的钠，缓解身体水肿、排出潴留水分，这也是食用高钾食物后体重快速下降的核心原因，减掉的只是水分，并非脂肪。同时，菠菜、山药、豆类等多数高钾食物富含膳食纤维，饱腹感极强，能自然减少全天总热量摄入，且钾可提升人体运动耐力，帮助消耗更多热量。     　　需要明确的是，高钾食物本身不含任何可直接分解脂肪的成分。想要实现真正减脂，依旧需要依靠合理的饮食控制、规律运动。高钾饮食只能作为辅助方式，无法替代科学的减脂方案，盲目跟风单一饮食反而可能影响身体健康。　　四类人群盲目补钾暗藏健康风险      　　在网络热潮下，不少健康人群跟风坚持高钾晚餐，甚至额外服用补钾制剂。对此，胡敏强调，钾元素摄入讲究“按需补充”，绝大多数健康成年人依靠日常均衡饮食，即可满足身体钾元素需求，无需刻意食补，更不用药补。     　　临床中仅四类人群适合在专业指导下适当补钾：确诊低钾血症患者;严重腹泻呕吐、长期服用排钾利尿剂等钾流失过多人群;高温作业、高强度运动等钾消耗增加人群;长期厌食、节食、挑食且肾功能正常的摄入不足人群。且补钾需遵循科学原则，轻度缺钾、肾功能正常者优先食补，药物补钾必须遵医嘱并监测电解质。

I |      　　与此同时，四类人群严禁盲目补钾，否则会引发严重健康隐患，包括确诊高钾血症患者、急慢性肾功能不全少尿或无尿人群、服用保钾类降压药等药物人群、Addison病患者。普通人盲目过量补钾，轻则出现手脚麻木、肌肉无力、恶心呕吐等不适，重则引发心律失常、心脏骤停等致命风险，其中肾功能不全人群补钾风险最高，务必杜绝自行进补。     　　胡敏提醒，健康饮食的核心是均衡多样，无需跟风追捧网红饮食。日常三餐合理搭配食材、规律作息、适度运动，才是兼顾睡眠、体重管理与身体健康的根本方式。

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Published on:14:34:56