Does the saying "you are what you eat?

Tweet

I am twice a day only. I am 34 years old, weigh 90 lbs, and 5 feet only. Taking some vitamins, eat lots of green leafy vegetable. A few cut of lean meat not too much for I dont like to eat too much meat. I tried to gain, but I get nauseated whenever i tried to eat extra. What do I need to do to gain more at least 15 more lbs?