1 Underweight (BMI below 18.5): If you were underweight for your height you should gain 28 to 40 pounds. 2  Overweight (BMI of 25 to 29.9): If you were overweight for your height you should gain 15 to 25 pounds. 3  Obese (a BMI of 30 or higher): If you were obese for your height you should gain between 11 and 20 pounds.
In the UK, the most common causes of malnutrition in children are long-term health conditions that: 1  cause lack of appetite. 2  disrupt the normal process of digestion. 3  cause the body to have an increased demand for energy.
The effects of malnutrition on child development are attributed to lack of nutrients during pregnancy and also, during lactating period.alnutrition is defined as the lack of sufficient nutrients, which are essential for the body's normal functioning. Over time, it affects the bodily organs and results in mild to severe medical problems. One of the malnutrition facts is that the number of hungry people is more in the developing countries.