Diagnosed with diabetes, LaBelle, bestselling cookbook writer (LaBelle Cuisine) and Grammy-winning singer, has had to find ways to control her diet and make it healthier; this newest is the inspiring result. All 100 starters, entrees, sides and desserts are low on fat, sodium and sugar—but definitely high on flavor. Orange Roughy with Roasted Tomato and Olive Relish and Marvelous Minted Snap Peas are stylishly lean and contemporary, but LaBelle also cooks up old-fashioned Southern comfort food like Crunchy Cajun Catfish Nuggets, Down-Home Pork Chops in Guilt-Free Gravy and Chocolate Pecan Pie. All dishes include complete nutritional analyses, with diabetic exchanges and carbohydrate choices developed and approved by the American Diabetes Association and the American Dietetic Association; they also come with "Patti's Pointers" (ideas on technique, equipment and ingredients), along with warm reminiscences of meals with family and friends. LaBelle is wonderful company for someone on a diet regime of any kind (as her friendly family photos further illustrate); she is creative, upbeat, knowledgeable and amusing. (Apr.)