肥胖 用英语怎么说怎么写

肥胖在英语中可以用 "obesity" 或 "fat" 来表示。
Obesity 来自拉丁语的 "obesitas"，意思是过于肥胖。Fat 来自中世纪英语的 "fætt"，意思是肥胖。
下面是一些例句：
The World Health Organization defines obesity as having a body mass index (BMI) of 30 or higher. (世界卫生组织将肥胖定义为体重指数（BMI）大于30的状态。)
Obesity is a major risk factor for many serious health conditions, including heart disease and diabetes. (肥胖是许多严重健康问题的主要危险因素，包括心脏病和糖尿病。)
He has struggled with obesity his entire life, but he's finally starting to see some progress after joining a weight loss program. (他一生都在与肥胖斗争，但在参加减肥项目后，他终于开始看到一些进展。)