你還在為減肥而糾結嗎？為什么自己總比別人更容易長胖呢？最新研究稱，一些人比別人更容易長胖的原因在于對“吃飽”與否的感覺滯后于別人。

這表明飲食并不總是導致身材走樣的原因。基因遺傳、產前大腦發育也是決定人們胖瘦的因素。這同時也說明了為什么兩個人——或者兄弟姐妹——吃著同樣的高脂肪食品，一個卻還是那么瘦，另一個卻日漸變胖。

People are fat because they struggle to recognise when they are full

Some people find it more difficult to stay slim than others because their brains are slow at recognising when they are full, a study claims.

Researchers have discovered that the different wiring means that they often overeat which leads to obesity.

圖為俄羅斯“肥胖芭蕾舞團”英國行

The findings add to the growing evidence that it is not always your diet that leads to being overweight but also your genetic inheritance and pre-birth development of the brain.

It also explains why two people – or siblings – can consume the same high fat diet but one remains thin while the other puts on weight.

The team at Yale University found that in rats some have nerve endings which are more sluggish at signalling when your stomach is full than others.

This means that they overeat slightly at every meal and eventually this leads to obesity.

The finding published in Proceedings of the National Academy of Sciences could help explain why two people can consume the same high fat Western diet and one becomes obese and prone to diabetes while the other maintains a slim frame.

"It appears that this base wiring of the brain is a determinant of one's vulnerability to develop obesity," said Professor Tamas Horvath, a neurobiologist at Yale University.

"These observations add to the argument that it is less about personal will that makes a difference in becoming obese, and, it is more related to the connections that emerge in our brain during development."

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（來源：telegraph.co.uk  編輯：Julie）