Hi, i am 30 yr old and i am very slim i need to put some weight.what shd i do for that?pls advise....

See a doctor: Often people who are trying to gain weight have as much or more of a challenge than those trying to lose weight. If you are eating plenty of food & not gaining you may have a medical condition such as hyperthyroidism, malabsorption or gluten intolerance. It would be wise to have an evaluation by a qualified doctor to assess why you are having difficulties. Consider www.Abihm.Org/search-doctors.