The presentation of attention deficit hyperactivity disorder (ADHD) may increase vulnerability to certain eating disorders, such as bulimia. Links are emerging between ADHD and eating behavior. Having ADHD may increase vulnerability to certain eating disorders, such as bulimia. Research is being conducted to identify the mechanisms at work in the brain, as well as daily risk situations. ADHD is a complex disorder that affects about 5% of children and 3% of adults worldwide. In France, ADHD affects about 3.5% of children and 2.9% of adults, according to epidemiological data retained by the High Authority for Health. This is mainly due to better understanding and thus more precise identification of people who, previously, were overlooked by clinical screening. Shopping for groceries, buying the right products, preparing a balanced meal can require considerable effort for a person with ADHD. Thus, many end up turning to quick solutions, such as snacking or fast food. The brain of people with ADHD functions differently in the way it processes rewards. Without going into the details of the neurobiological processes, we can say that the ADHD brain tends to overvalue what is immediately available at the expense of what will be beneficial later. In other words, the ADHD brain prefers the "immediately" to the "later." Researchers speak of "waiting impulsivity" which corresponds to the difficulty in waiting when an immediate gratification is available. Food would fit perfectly into this mechanism. It is visible, concrete, accessible and provides rapid pleasure or relief. Conversely, the benefits of a balanced diet remain too distant in time to weigh heavily in the balance when the cookie package is there, on the table. Some studies show that in the presence of food images, people with high ADHD symptoms and more food loss of control present a greater activation of brain regions related to motivation and reward. Other studies, on the other hand, find no significant difference. Food would therefore not automatically be a "super-reward" for all people with ADHD but it could be in certain situations. Attention difficulties would also play a disruptive role. Indeed, a person hyper-focused on a task may simply forget to eat or not perceive the initial hunger signals. When hunger finally becomes intense, often, the control resources are already exhausted by the fatigue or mental overload related to the previous task. In this state, external signals would easily take over. Thus, an odor or a visible food becomes quickly prominent. This is what researchers call "food reactivity." It refers to the tendency to consume food when it is available or particularly attractive, even after a meal. In a study conducted on 548 children, 396 of whom had ADHD, this reactivity was significantly higher among children with ADHD. Furthermore, ADHD appeared as the most likely hypothesis to explain a large part of the link observed between inattention and body fat. This does not mean that ADHD directly causes weight gain. It rather suggests a chain reaction: inattention disrupts meals, hunger intensifies, control abilities weaken and the food environment becomes more difficult to ignore. Recent research has also shown that inhibition and emotional control difficulties were associated with more "addictive" eating behaviors in more than 1,000 children and adolescents with ADHD, knowing that the concept of "food addiction" is discussed in the scientific community. Beyond immediate pleasure, food can also serve an emotional regulation function. People with ADHD often experience daily frustrations more intensely: stress, boredom or mental overload can be more difficult to soothe. In these moments, eating offers quick comfort. A liked food temporarily diverts attention from the negative emotion and thus reduces internal tension. This feeling of relief, however brief, is often enough for the brain to remember the association between difficult emotion and food. This emotional regulation mechanism called "emotional eating," transforms food into a source of comfort in the face of adversity.