The best diet plan for losing stomach fat is balancing blood sugars and liver cleansing by cutting back on processed foods, added sugars, and alcohol while increasing nutrient-dense foods like lean proteins, healthy fats, and high-fibre vegetables. However, spot reduction (targeting weight loss in a specific area) is impossible, so it's important to focus on overall weight loss and body composition rather than just stomach fat. Consulting with a nutritional therapist for weight loss help can provide personalized guidance and support.