My one year old baby is not gaining weight at all though she feeds well. What can be her problem?

If your baby is feeding well but not adding weight then you may first look at what types of food that you are giving her. Babies have high energy needs so you need to ensure that you feed her foods from all food groups i.e. carbohydrates e.g. ugali, porridge, rice, sweet potatoes, bread; proteins e.g., meats, chicken, eggs, beans, Ndengu; Fruits and vegetables.