努力減肥卻沒瘦，喝口涼水都長肉。你是否也有這種煩惱？其實這被稱為“蒙娜麗莎綜合癥”。

“蒙娜麗莎綜合癥”---MONA LISA hypothesis是取英語Most Obesities kNown Are Low In Sympathetic Activity（意即“大多數的肥胖是由交感神經不夠活躍而造成的”）的首字母而拼成的名字。換言之，瘦不下去是因為消耗人體熱量的交感神經活動低下。

Obesity is considered a world epidemic, but no efficient therapy is available so far. Different mechanisms were proposed to explain obesity condition. One of those is the MONA LISA hypothesis that states that Most Obesities kNown Are Low In Sympathetic Activity.

肥胖癥是一種全球性的“流行病”，但目前來看還沒有有效的治愈方法。人們對肥胖的成因提出了多種原理機制，其中之一就是“蒙娜麗莎綜合癥”。

MONA LISA (Most Obesities kNown Are Low In Sympathetic Activity) hypothesis postulates that lower sympathetic activity is an initiating event leading to decreased energy expenditure and obesity.

按照“蒙娜麗莎綜合癥”的解釋，交感神經活動低下會導致能量消耗的減少，并引發肥胖。

（中國日報網英語點津? Julie）