尽管过去的研究表明咖啡可能有副作用，但最新的研究表明，它实际上可能对健康有益。
为什么研究会逆转？如果仅关注饮食的一个方面，很难将其与健康状况联系起来，因为还有很多其他因素可能起作用。例如，对咖啡的早期研究并没有考虑到大量饮用咖啡的人也习惯于使用烟草和久坐不动。
较新的研究调整了这些因素，发现咖啡与死亡率下降之间可能存在关联。咖啡有助于防止以下疾病：
- 帕金森氏病
- 2 型糖尿病
- 肝病，包括肝癌
- 心脏病发作和卒中
咖啡仍然有潜在的风险，主要是由于其咖啡因含量较高。例如，它可能会暂时升高血压。怀孕、备孕或母乳喂养的女性需要谨慎使用咖啡因。大量摄入煮沸和未过滤的咖啡与胆固醇水平轻度升高有关。
最重要的是什么？您喝咖啡的习惯可能很好，甚至可能有一些益处。但如果您出现与咖啡有关的副作用，如胃灼热、紧张或失眠，则需考虑减少摄入。
显示参考文献
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Original article: https://www.mayoclinic.org/zh-hans/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/coffee-and-health/faq-20058339