央视网消息：高温之下，很多人会选择冰镇饮料、冰激凌等消暑，但吃"冰"也得讲究"科学性"，一味贪凉可能会伤身。近日，上海 一名女子吃完冰激凌后，前额突然一阵剧烈疼痛，持续好几分钟，胃也不舒服，连忙到医院就医。医生表示，这种情况有一个形象 的说法，叫"脑结冰"。 医生介绍，吃冷饮能刺激人体的副交感神经，减少自律性神经失调现象，振奋精神。适当摄入冷饮可以避免身体过热，促进消化液 的释放，达到刺激胃肠道蠕动、增加食欲的效果。 吃冰后"脑壳一紧"也被称为"脑结冰" 像张女士这种吃冰后"脑壳一紧"的疼痛感，也被称为"脑结冰"。这种疼痛主要发作于前额中部和太阳穴附近，可持续几十秒或更 长，一般不超过2—5分钟。部分人除了头痛外，还伴有恶心、呕吐症状，甚至造成短时的血压升高。 张女士表示，天气热，她拿出冰淇淋吃一大口感觉不舒服，脑子像抽筋一样，胃里也难受。 适当吃冰可以刺激胃肠道蠕动 增加食欲 上海市黄浦区打浦桥街道社区卫生服务中心中医全科主治医师邬婉文介绍，"脑结冰"一般在两种情况下出现这种情况，第一是大口 吃了冷饮之后，口腔黏膜造成刺激。第二种是在剧烈运动或劳作之后，大量出汗再大量饮用冷饮，对颅内血管造成刺激引发的头 痛 ...

Core Viewpoint - The article emphasizes the increased cardiovascular risks during summer due to high temperatures and suggests various protective measures for heart health. Group 1: Summer Heart Risks - Cardiovascular disease-related mortality increases by 2.1% for every 1°C rise in temperature [1] - Heart attack cases surge during summer, particularly after the hottest days, due to three main pressures: temperature extremes, cold food consumption, and emotional stress [1][2][3] Group 2: Recommendations to Avoid Heart Risks - Avoid drinking ice water immediately after exercise to prevent sudden blood vessel constriction and increased blood pressure [4] - Do not blow air conditioning directly on oneself after sweating; allow the body to adjust gradually [5] - Wait 10-15 minutes after sweating before taking a cold shower to prevent blood vessel spasms [6] - Limit sugary drinks; consuming more than two servings daily increases cardiovascular disease risk by approximately 21% [7] Group 3: Heart Health Practices - Drink warm water before bed and upon waking to dilute blood and reduce clotting risk [9] - Drink small amounts of water frequently rather than large quantities at once to avoid overloading the heart [10] - Incorporate fresh fruits and vegetables into the diet to ensure adequate potassium intake and support heart health [11] - Take short naps during the day to alleviate fatigue and support heart health [12] - Engage in brisk walking for at least 30 minutes daily to lower the risk of heart disease and stroke [13]