The Reasons for Variation in Weight Loss Among Different People

Foods have varying impacts on different persons. We can eat the same food, similar quantities and of the same quality but research has it that the amount of weight we will be gaining from the foods will be absolutely different.
Once carbs, for example, are induced into our systems, they are broken down into simple sugars and released into our blood stream. Rate and time taken for these activities vary from person to person. The main reason; however, as to why people gain weight, is simply because they are burning less than what they are taking, hence the body converts and reserve the excess as fat stores.
We tend to take more calories than what our bodies can successfully burn resulting in our enormous weight gains.
Moreover, weight gain can also be a result of an underlying health complication such as the ones below:
Underactive Thyroid - The thyroid gland is responsible for the production and regulation of the thyroid hormones. These are enzymatic catalysts that control the body's metabolism. These hormones speed up the metabolic activities that require energy, hence ensuring an active being. When the body is deprived of these hormones, metabolism declines causing reduced activity and low ATP energy use. This allows the body to store the excess carbs in form of fats.
Diabetes - Failure of the pancreas in production of adequate insulin is what is termed as diabetic. Insulin is the hormone responsible for allowing glucose from the bloodstream to diffuse through the body cells, tissues and organs for energy production hence its absence results in too much sugar in your blood stream. Treatment of diabetics is by directly injecting insulin into the patient's system to counteract the deficit.
However the insulin injected may result into weight gaining scaling. This happens when the patient's diet does not merge the insulin in his/her system. Meaning she/he is taking more than what the body burns.
Aging - Metabolism gradually slows with age. Once old age creeps in, we tend to be less active. During this time, we tend to lose much of our muscles. Muscles are the main sites of calorie burning. When we lose muscles, we are restricted to a reduced calorie burning. Suppose your diet doesn't change, you are eating the same and drinking at the same level that you were used to when you were little younger. This will mean your body is storing the unutilized calories and hence weight gain.

Article Source: http://EzineArticles.com/9326639