社群媒體照片功能使用、身體意象與健康食物癡迷相關之研究

Abstract

本研究旨在探討台灣年輕族群中，社群媒體照片功能使用、身體意象與健康食物癡迷之間的關聯，並進一步驗證身體意象於其中所扮演的中介角色。隨著社群媒體上大量呈現理想化身材與健康飲食的內容，年輕族群面臨越來越高的外表期待與飲食焦慮，而過度追求健康飲食的現象──健康食物癡迷（Orthorexia Nervosa）也因此逐漸受到關注。本研究透過線上問卷回收有效樣本共 424 份，研究對象為18至30 歲。問卷內容包含社群媒體使用狀況、身體意象評估、健康食物癡迷量表及基本背景資料。資料分析方法包括皮爾森積差相關分析、多元迴歸分析與拔靴法中介效果檢驗。結果顯示：社群媒體照片功能使用與身體意象、健康食物癡迷三個構面皆呈現顯著正向關聯；其中，身體意象對健康食物癡迷有完全中介效果。

This study aims to examine the relationships among social media photo-based feature usage, body image, and orthorexia nervosa among young adults in Taiwan, with a particular focus on the mediating role of body image. As idealized body shapes and health-oriented dietary content become increasingly prevalent on social media platforms, young people face heightened appearance-related expectations and food-related anxiety. In this context, the phenomenon of orthorexia nervosa—an excessive preoccupation with healthy eating—has garnered growing scholarly attention. This research collected 424 valid responses from individuals aged 18 to 30 through an online survey. The questionnaire assessed social media usage, body image, orthorexia nervosa, and basic demographic information. Data were analyzed using Pearson’s correlation, multiple regression, and bootstrapped mediation analysis. The results indicated that the use of photo-based features on social media was positively associated with both body image and the three dimensions of orthorexia nervosa. Moreover, body image fully mediated the relationship.