Author David Leite is back with me for this edition of "Is This Normal?," to help me field an email from a mother who is concerned about her child's over anxious behaviors. Leite himself was diagnosed bipolar and suffered from severe anxiety as a child. 

Leite is the founder of the James Beard award-winning website Leite's Culinaria, and he's the author of the cookbook "The New Portuguese Table." His new book, "Notes on a Banana: A Memoir of Food, Love, and Manic Depression."