Problems are fast foods, soda vending machines, large portion sizes at restaurants, decline in school physical education programs, and many hours of internet and television activities. Most diet books have a rationale and testimonials about weight loss. Anyone can lose weight in a few weeks with many diets around 1500 calories. Diets with no serving sizes often underestimate fat levels. Distilled alcohol and distilled vinegar are probably safe because the protein is not in the final distillate.
Studies suggest that oats can be used.
Many European countries include cereals that have been rendered gluten-free.