While a large, and growing population face obesity and over-weightiness, there are many who fall victim to being underweight . As compared to over-weightiness, being under-weight may be more serious of an issue. Before we continue, let’s understand what does being ‘under-weight’ mean. What Does It Mean?? One is categorized “Under-Weight” when he/she has a BMI that is under 18.5 . BMI is the abbreviated form of Body-Mass Index. It is calculated by dividing your Weight (in kilograms), by the square of your Height (in meters). Or: BMI = Weight in Kg / (Height in Meters) * (Height in Meters) The main goal for under-weight people is to gain weight - however, this must be done with caution ; it is always better to consult a doctor before doing anything with your health. Before we begin with the process of weight-gain, let’s dive into why some people are under-weight. Why Are Some Under-W...