New research has suggested that rather than focusing so much on the weight you see when you step on the scales; we need to look into body composition. This means that we need to look at the make up of your weight, for example how much muscle mass and body fat you have in your body. This has been highlighted in research published in the American Journal of Medicine which has shown in older adults that a greater muscle mass may lead to a longer life (1).
Unfortunately as we age we generally start to lose our muscle mass. After the age of 30 this can occur at a rate of around 3–8% reduction in lean muscle mass per decade! This can be for a variety of reasons with a leading cause being the fact that often when we age we become more sedentary. Think about it. Are you as active as you were in your 20s?