June 9, 2014
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啤酒中的酒精是不會轉化成脂肪儲存體內。酒精在體內會由乙醇轉化為乙醛,⼄醛再轉化成⼄酸﹐最後⼄酸轉化成二氧化碳及水,最後排出體外。
但為什麼坊間盛傳飲酒會致肥呢?原因是酒精會降低基礎代謝率中的脂肪代謝。當酒精進⼊我們⾝體後,酒精會優先成為代謝能量﹐要知道酒精所含有的熱量⼀點也不低(脂肪⼀克含有九⼤卡,酒精也含有七大卡),這會大量取代脂肪成為基礎代謝率的能量來源。基礎代謝是維持體溫、⼼跳及內臟運作的維生功能,在正常狀況下,有⼋成脂肪是基礎代謝的能量來源,如吸收了大量酒精,脂肪就不會從正常代謝消耗,繼而積存起來造成肥胖。
Alcohol in the beer will not be converted into fat stored in the body. In fact, alcohol in the body will be converted from Ethanol into Acetaldehyde which will further convert into Acetid Acid. And Acetid Acid will convert into carbon dioxide and water which will excrete.
But, why are there rumors about drinking can cause fat? The reason is that alcohol will reduce the fat metabolism of the Basal Metabolic Rate (BMR). When alcohol enters our body, alcohol will become energy metabolism in priority. We have to know that the calories contained in alcohol is not low (one gram of fat contains nine calories, alcohol contains seven calories), this substantial amount will replace fat which will be an energy source of the Basal Metabolic Rate.
Basal Metabolism is the vital function which maintain the body temperature, heart rate and visceral functioning. Under normal circumstances, 80% of fat is the basal metabolism of energy sources, such as large amount of alcohol absorption. Normal fat metabolism cannot be consumed, which accumulate up and cause the obesity.