世衛指出，肥胖仍是許多國家民眾健康的問題，特別是肥胖比率位居東南亞第一馬來西亞人，身體質量指數BMI超過25以上的就有高達45.3%，肥胖症威脅著人體的健康，肥胖的問題伴隨而來的是糖尿病、心臟病、腦血管疾病和呼吸系統問題等多種疾病。
以科學的角度來看，造成肥胖的原因大多是因為食物所提供的熱量超過身體所需，導致過多的熱量轉換成脂肪儲存，久而久之脂肪的屯積便使的體重上升，便是肥胖形成的主因。
那麼問題就來了，為什麼食物所提供的熱量會超過身體所需？很簡單的道理就是攝取的熱量大於消耗的熱量，一般人的迷思是「吃的太多」，但是這裡所要強調的則是「攝取的熱量太多」，並非吃得少就不會發胖，而是要選擇低熱量的食品來吃才不易變胖。而造成熱量攝取及消耗不平衡所導致肥胖正的原因，通常是綜合以下的原因與誘發因素所致：
以科學的角度來看，造成肥胖的原因大多是因為食物所提供的熱量超過身體所需，導致過多的熱量轉換成脂肪儲存，久而久之脂肪的屯積便使的體重上升，便是肥胖形成的主因。
那麼問題就來了，為什麼食物所提供的熱量會超過身體所需？很簡單的道理就是攝取的熱量大於消耗的熱量，一般人的迷思是「吃的太多」，但是這裡所要強調的則是「攝取的熱量太多」，並非吃得少就不會發胖，而是要選擇低熱量的食品來吃才不易變胖。而造成熱量攝取及消耗不平衡所導致肥胖正的原因，通常是綜合以下的原因與誘發因素所致：
第一，遺傳：可能影響人體在運動期間轉換食物為能量以及卡路里燃燒的效率。
Genetics：genetics may play a role in how efficiently body converts food into energy and burns calories during exercise.
第二，家庭生活方式：肥胖者的特質往往是他們家庭的特色，除了遺傳的因素以外，家庭的成員往往傾向於相似的飲食、生活方式與活動習慣。
Family lifestyle：obesity tends to run in families. Other than genetic is family members tend to have similar eating, lifestyle and activity habits.
第三，不活動：久坐不動的生活方式容易使得卡路里的攝入量比運動或日常活動消耗量來得多
Inactivity：a sedentary lifestyle can easily take in more calories than burn off through exercise and normal daily activities.
第四，不健康的飲食與習慣：高卡路里的飲食生活習慣，像是缺乏蔬果的攝取、只吃速食快餐、不吃早餐或是充滿著高卡路里的飲料，對於體重的上升占了很大一部分原因。
Unhealthy diet and eating habits：a diet that's high in calories, lacking in fruits and vegetables, full of fast food, missing breakfast, and laden with high-calorie beverages and oversized portions contributes to weight gain.
第五，懷孕：懷孕期間，婦女的體重必然會增加，有部分的婦女會發現即使生產完後體重似乎很難再下降，這也將導致肥胖症的發展。
Pregnancy：during pregnancy, a woman's weight necessarily increases. Some women find this weight difficult to lose after the baby is born. This weight gain may contribute to the development of obesity in women.
第六，睡眠不足：睡眠不足或是睡太多都有可能導致賀爾蒙失調而造成肥胖，會變得更加渴望富含高卡路里與碳水化合物的致肥食品。
Lack of sleep：not getting enough sleep or getting too much sleep at night can cause changes in hormones that increase appetite, that may crave foods high in calories and carbohydrates, which can contribute to weight gain.
第七，藥物：若是沒有配合飲食或是活動的調和，一些藥物將會導致體重的增加。這些藥物包括抗抑鬱藥、抗驚厥藥物、糖尿病藥物、抗精神病藥物、類固醇和β受體阻滯劑等等。
Medications - some medications can lead to weight gain if not compensate through diet or activity. These medications include some antidepressants, anti-seizure medications, diabetes medications, antipsychotic medications,steroids and beta blockers.
第八，年齡：肥胖可發生於任何年紀，甚至是年幼的孩子，但隨著年齡的增長，荷爾蒙的變化以及本身在於運動的生活習慣下降都會提高肥胖症的風險。
Age - obesity can occur at any age, even in young children, but as age increased, hormonal changes and a less active lifestyle increase risk of obesity.
第九，社會和經濟問題：肥胖的原因可能也與社會以及經濟問題掛勾，像是沒有安全的區域可進行運動、不健康的烹飪方式或是沒有錢去買更健康的食品等等。
Social and economic issues - certain social and economic issues may be linked to obesity such as no safe areas to exercise, healthy ways of cooking or no money to buy healthier foods.
Reference
1. Juni, M. H. (2015) OBESITY: A Public Health Threats in Developing Countries. International Journal of Public Health and Clinical Sciences 2
2. Department of Community Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, MALAYSIA.
Genetics：genetics may play a role in how efficiently body converts food into energy and burns calories during exercise.
第二，家庭生活方式：肥胖者的特質往往是他們家庭的特色，除了遺傳的因素以外，家庭的成員往往傾向於相似的飲食、生活方式與活動習慣。
Family lifestyle：obesity tends to run in families. Other than genetic is family members tend to have similar eating, lifestyle and activity habits.
第三，不活動：久坐不動的生活方式容易使得卡路里的攝入量比運動或日常活動消耗量來得多
Inactivity：a sedentary lifestyle can easily take in more calories than burn off through exercise and normal daily activities.
第四，不健康的飲食與習慣：高卡路里的飲食生活習慣，像是缺乏蔬果的攝取、只吃速食快餐、不吃早餐或是充滿著高卡路里的飲料，對於體重的上升占了很大一部分原因。
Unhealthy diet and eating habits：a diet that's high in calories, lacking in fruits and vegetables, full of fast food, missing breakfast, and laden with high-calorie beverages and oversized portions contributes to weight gain.
第五，懷孕：懷孕期間，婦女的體重必然會增加，有部分的婦女會發現即使生產完後體重似乎很難再下降，這也將導致肥胖症的發展。
Pregnancy：during pregnancy, a woman's weight necessarily increases. Some women find this weight difficult to lose after the baby is born. This weight gain may contribute to the development of obesity in women.
第六，睡眠不足：睡眠不足或是睡太多都有可能導致賀爾蒙失調而造成肥胖，會變得更加渴望富含高卡路里與碳水化合物的致肥食品。
Lack of sleep：not getting enough sleep or getting too much sleep at night can cause changes in hormones that increase appetite, that may crave foods high in calories and carbohydrates, which can contribute to weight gain.
第七，藥物：若是沒有配合飲食或是活動的調和，一些藥物將會導致體重的增加。這些藥物包括抗抑鬱藥、抗驚厥藥物、糖尿病藥物、抗精神病藥物、類固醇和β受體阻滯劑等等。
Medications - some medications can lead to weight gain if not compensate through diet or activity. These medications include some antidepressants, anti-seizure medications, diabetes medications, antipsychotic medications,steroids and beta blockers.
第八，年齡：肥胖可發生於任何年紀，甚至是年幼的孩子，但隨著年齡的增長，荷爾蒙的變化以及本身在於運動的生活習慣下降都會提高肥胖症的風險。
Age - obesity can occur at any age, even in young children, but as age increased, hormonal changes and a less active lifestyle increase risk of obesity.
第九，社會和經濟問題：肥胖的原因可能也與社會以及經濟問題掛勾，像是沒有安全的區域可進行運動、不健康的烹飪方式或是沒有錢去買更健康的食品等等。
Social and economic issues - certain social and economic issues may be linked to obesity such as no safe areas to exercise, healthy ways of cooking or no money to buy healthier foods.
Reference
1. Juni, M. H. (2015) OBESITY: A Public Health Threats in Developing Countries. International Journal of Public Health and Clinical Sciences 2
2. Department of Community Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, MALAYSIA.
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