央视网消息：7月7日将迎来小暑节气，小暑是夏季的第5个节气。小暑的到来标志着梅雨季节的结束，最热的三伏天要来了。小暑 正值盛夏，气候呈现高温、高湿的特点。值此时节，该注意点什么？ 中国医学科学院阜外医院冠心病一病区主任宋雷介绍，这种高温高湿的天气，不利于人的睡眠，尤其再加上熬夜，都会造成人体内 环境的紊乱，也会增加心脑疾病发生的风险。另外还有一个比较重要的因素就是在这些高温的天气，人容易比较贪凉，空调开得很 低，或者愿意吃一些特别冷或冰的食物，冷热交替或者冰冷的食物刺激，会诱发心血管系统痉挛，就是指血管容易在这种情况下出 现一过性收缩，会增加心血管系统的疾病风险。 高温天气下预防心脑血管疾病，应做好以下几点。 切莫"贪凉" 高温天气切莫暴饮暴食，容易引发胃肠不适，导致胃疼和腹泻等，严重者出现心脑血管疾病意外，建议增加新鲜蔬果和全谷类的比 例。 运动要适度 尽量不要在高温环境下做剧烈运动，以身体感觉不到明显疲劳为度，以免增加心脏的负担，出汗多时注意补充水和电解质，避免脱 水。 防中暑感冒常饮藿香正气水对吗？ 空调使用有讲究，室内外温差过大容易导致血管急剧收缩。一般室内温度设定在28℃左右，避免冷风直吹，这一点心 ...

Core Viewpoint - The article highlights the severe heat wave affecting central and eastern China, with high temperatures expected to persist across various regions, prompting health warnings from authorities [1] Group 1: Health Risks and Precautions - The National Disease Control and Prevention Bureau and the China Meteorological Administration have issued health risk warnings due to high temperatures, advising the public to avoid outdoor activities during peak heat hours and ensure adequate hydration [1] - Heat-related illnesses can be categorized into three types, with heat stroke being the most severe and potentially fatal if not treated promptly [3][5] - Symptoms of heat stroke include fainting, high fever, and a body temperature exceeding 40°C, while milder forms of heat illness may present with elevated body temperature and pale skin [6][7] Group 2: Vulnerable Populations - Certain groups are more susceptible to heat-related illnesses, including those working or exercising in high-temperature and high-humidity environments, individuals with insufficient rest, and those with larger body sizes [7][8] Group 3: Emergency Response and Treatment - Immediate actions for treating heat stroke include moving the affected person to a cool, ventilated area, loosening clothing, and applying cooling methods such as immersing in cold water or using wet towels [10][11] - If symptoms persist or worsen, it is crucial to seek professional medical assistance rather than forcing the individual to drink water [11] Group 4: Preventive Measures - Recommendations for high-temperature days include avoiding outdoor activities during peak hours, wearing light clothing, and staying hydrated with electrolyte-rich fluids [13] - After heavy sweating, it is advised to wait before consuming cold drinks to prevent potential health issues like "brain freeze" [14] Group 5: Seasonal Health Concerns - The article also notes that summer is a peak season for gastrointestinal issues, and suggests the use of probiotics to maintain gut health [15] - It emphasizes the importance of hydration to prevent kidney stones, as high temperatures can lead to concentrated urine and increased risk of stone formation [22]