Abstract

We examined whether bone health is related to protein intake from different sources by utilising a distinct, rare dietary pattern: avoidance of animal foods for approximately half of the year according to Christian Orthodox Church fasting. Four-hundred adults, of whom 200 had been following religious fasting for a median of 15 years and 200 were non-fasters, underwent anthropometry, measurements of bone mineral density (BMD) and bone mineral content (BMC), and completed a food frequency questionnaire. Groups did not differ significantly in anthropometric measures, BMD, or BMC. Fasters had higher consumption of seafood and lower consumption of red meat, poultry-eggs, dairy products, and grains-cereals than non-fasters. Protein intake from these food groups exhibited similar differences; overall, fasters had lower protein intake than non-fasters. BMD and BMC were positively, though weakly, correlated with red meat and poultry-egg consumption. Thus, protein intake seems to play a minor (if any) role in bone health.

摘要

我们通过使用一种独特的、罕见的饮食模式来检查骨骼健康是否与来自不同来源的蛋白质摄入量有关：根据基督教东正教禁食，大约半年避免动物性食物。400 名成年人，其中 200 人遵循宗教禁食时间的中位数为 15 年，200 人不禁食，接受了人体测量学、骨矿物质密度 (BMD) 和骨矿物质含量 (BMC) 的测量，并完成了食物频率问卷。各组在人体测量、BMD 或 BMC 方面没有显着差异。与非禁食者相比，禁食者的海鲜消费量更高，红肉、禽蛋、乳制品和谷物的消费量更低。这些食物组的蛋白质摄入量表现出相似的差异；总体而言，禁食者的蛋白质摄入量低于非禁食者。BMD 和 BMC 与红肉和禽蛋消费量呈正相关，尽管微弱。因此，蛋白质摄入量似乎对骨骼健康的影响很小（如果有的话）。