Black Cat Systems today announced the release of Diet Sleuth 4.5. This version adds features to calculate a user’s daily caloric needs and estimated weight loss. Diet Sleuth is a nutritional database and personal health logbook, and allows users to keep track of what foods they eat each day, and their nutritional value. For each day, users select the foods they have eaten, and the number of servings of each. Diet Sleuth will automatically calculate the caloric intake, fat grams, carbohydrates, fiber, protein, cholesterol, along with sodium, potassium, and calcium. Diet Sleuth is priced at US$34.99.