饮食可引起轻度代谢性酸中毒,可能会导致血压升高。方法:入选≥55岁基线(1990-1993)无高血压、有完整饮食和血压数据的参与者2241名。通过170项有关食物的问卷调查获取饮食数据。使用2种指标来评估饮食酸负荷:通过蛋白质、磷、钾、钙、镁计算潜在肾酸负荷(potential renal acid load,PRAL);通过蛋白质和钾估算内源性酸的净生成(net endogenous acid production,NEAP)。探索经调整年龄、性别、体质量指数、吸烟、教育程度和酒精、纤维、总能量 Diet can cause mild metabolic acidosis, may lead to elevated blood pressure. METHODS: A total of 2241 participants with a complete diet and blood pressure data were enrolled in a baseline of ≥55 years (1990-1993) without hypertension. Through 170 food-related questionnaires for dietary data. Two indicators were used to assess dietary acid load: potential renal acid load (PRAL) was calculated by protein, phosphorus, potassium, calcium, magnesium; net endogenous acid was estimated by protein and potassium production, NEAP). Explore adjusted age, gender, body mass index, smoking, education and alcohol, fiber, total energy