The definition of writing​

the act or process of one who writes: such as. a : the act or art of forming visible letters or characters specifically : handwriting sense 1. b : the act or practice of literary or musical composition.Writing" is the process of using symbols (letters of the alphabet, punctuation and spaces) to communicate thoughts and ideas in a readable form. "Writing" can also refer to the work/career of an author, as in: "Shakespeare didn't make much money from writing."

lab rats that ate more artifical sweeter gained more weight than those who ate sugar and they had “lower levels of a hormone called glp-1, which affects how full we feel.”