Most macrobiotic diets are not nutritionally sound. They deliver nutrients needed by xylophages to nutritionally scarce dead wood. Dieteticians are a regulated profession that can distinguish nutritionally sound diets from unhealthy ones. Nutritionally complete vegan pet diets are comparable to meat-based ones for cats and dogs. The recommended diet may not be nutritionally adequate. Poultry meat and eggs provide nutritionally beneficial food containing protein of high quality. Nutritionally complete meal replacements can be used to minimize malnutrition. Food Sticks were marketed as a "nutritionally balanced between meal snack". The goal is a tasty and nutritionally balanced menu. Safflower seed oil is flavorless and colorless, and nutritionally similar to sunflower oil. The food is simple, subtle, and nutritionally balanced. Prison food in many developed countries is nutritionally adequate for most inmates. It can tolerate nutritionally poor or saline soils. It does not, however, contain more glucose, and is nutritionally identical to regular milk. Nixtamalization makes the niacin nutritionally available and prevents pellagra.