Core Viewpoint - The article discusses the effectiveness and safety of meal replacement products and light foods in weight loss, emphasizing that while they can aid in weight management, they are not suitable for everyone and may pose health risks if misused [1][3]. Group 1: Meal Replacement Products - Meal replacements can effectively reduce weight and body fat when used correctly, as they provide a means of energy balance and nutrient supplementation [3]. - Not all individuals can safely use meal replacements; those with pre-existing health conditions may experience adverse effects [3][5]. - Common forms of meal replacements include powders, bars, shakes, and porridge, but some products may achieve weight loss through unhealthy methods that can harm the body [5]. Group 2: Health Risks and Nutritional Balance - Relying solely on meal replacements for weight loss is not scientifically sound; a balanced approach to energy intake and expenditure is crucial [5]. - Long-term use of meal replacements or light foods can lead to deficiencies in essential nutrients, potentially causing health issues such as hair loss and menstrual irregularities [5][7]. - Consumers should be cautious about the quality of light food products, as poor-quality ingredients and unclear nutritional labeling can pose food safety risks [7]. Group 3: Professional Guidance - Professional guidance from nutritionists or dietitians is recommended when incorporating meal replacements into a diet to ensure a balanced nutritional plan [5].