Hi I wonder whether any of you have experience of permanently tired teenagers. My lovely daughter is 14, under weight ( despite eating non stop, always been a good eater) and low BMI. She had a virus akin to Glandular Fever in May which knocked her sideways and she has spend nearly 3 months recovering, chronically tired all the time. Blood tests reveal nothing too sinister, may be bit anaemic during period time. She is such a wonderful girl, and it is heartbreaking to see her so constantly lacking in energy. Just about to embark on Year 10 so needs all the energy she can get. SHe has had vitamins, supplements, extra iron etc and she has grown over 3 cm in a few months - growing upwards, not outwards. Any experience/help or offerings would be appreciated....!