Group 1 - The core viewpoint of the article emphasizes the negative impact of excessive body fat on brain health, linking obesity to cognitive decline and brain atrophy [1][12][14] - A recent study published in the journal Nature Mental Health indicates that long-term obesity can lead to significant changes in brain structure and function, particularly affecting higher cognitive functions [1][12][9] - The study involved over 50,000 participants from the UK Biobank, with an average follow-up of 9.4 years, revealing that increased obesity correlates with progressive brain changes [9][12] Group 2 - Experts highlight that visceral fat accumulation is particularly harmful, with studies showing that an increase of 0.27 kg of visceral fat can age cognitive function by 0.7 years [4][12] - The article discusses the importance of distinguishing between different types of fat, noting that subcutaneous fat has protective roles, while visceral fat poses significant health risks [5][7] - The article suggests that even individuals with a normal BMI can have excessive visceral fat, indicating the need for comprehensive assessments beyond BMI alone [21][12] Group 3 - The article outlines a two-step approach for weight loss, emphasizing the need to first reduce overall weight before targeting fat loss, particularly visceral fat [22][21] - Recommendations for weight loss include dietary adjustments, increasing physical activity, and gradually incorporating resistance training [24][26] - The article stresses the importance of maintaining a balanced approach to weight loss, avoiding drastic changes that could negatively impact health [25][26]