Diet food is food that is low in calories and fat, and often high in fiber. The four crossword solutions for the term diet food are 'LITE' (4 letters), 'SALAD' (5 letters), 'TAB' (3 letters), and 'BRAN' (4 letters). 'LITE' typically refers to food that has been reduced in fat or calories. 'SALAD' is a dish made of raw vegetables, usually served with a dressing. 'TAB' is a brand of diet soda. 'BRAN' is a type of cereal grain that is high in fiber and low in fat. Finally, 'CELERY' (6 letters) is a vegetable that is low in calories and high in fiber.