1. Some studies indicate that individuals with a lower body mass index (BMI) may perform better on certain cognitive tests. This could be due to the fact that leaner individuals have less fat, which allows for better blood supply and energy to the brain, potentially enhancing its efficiency.2. Nevertheless, the relationship between intelligence and weight is not straightforward. Intelligence is influenced by a multitude of factors, including education, environment, lifestyle, and the cumulative effects of learning and thinking acquired over time.3. While innate physiological traits, such as BMI, may play a role in the development of an individual's intelligence, this does not mean that a person's level of intelligence is fixed or unchangeable. Through subsequent learning and ongoing mental challenges, people can improve and strengthen their cognitive abilities.