text: okay...help please (nutritionists/doctors or anyone in the medical field  preferrably)? i am about 15% underweight and i eat all the time...i need to know what to eat/do in order to gain weight..?? i heard of caltene bars but i dont exactly know what they do... just keep eatin more healthy food more often and take shakes dat hav loads of calories in they use these at hospitals so u can gt da drinks from chemists dont eat junk food cus ul put on weight bt wit all bumps and hav high cholestarol an blood pressure jus eat healthy food with an occasional fatty food 2-3 times a week (like choc,chippie once a week etc) good luk