GLOSSARY

Severe Obesity describes a higher-severity obesity category under a specified classification and should be interpreted with clinical complications and function.

Obesity is a complex chronic condition involving excess adiposity and health risk, with influences extending beyond individual choice. Body mass index is a screening measure and cannot distinguish muscle from fat or locate visceral fat. Classification thresholds and risk interpretation can differ by population. Assess waist measures, function, medical history and metabolic complications when relevant. In muscular athletes, a high body mass index alone does not justify an assumption of excessive adiposity or an automatic weight-loss prescription.

Weight management includes prevention of unwanted change, intentional change and maintenance. The appropriate goal follows health, function, training and the person's priorities rather than a scale target alone. Energy balance is dynamic, and the same intake change will not produce a fixed linear trajectory indefinitely. Use trends under comparable measurement conditions and assess well-being and performance. A plan should be revised when it produces persistent fatigue, deteriorating training or escalating preoccupation with food and weight.

For example, a high body mass index in a muscular athlete calls for assessment rather than an automatic assumption about fatness. In another person, a similar index may coexist with significant metabolic complications. Use the relevant clinical information and the person's priorities to decide the care goal without blame or a one-size-fits-all weight target.

Cardioprotective eating commonly emphasizes vegetables, fruit, legumes, whole grains, nuts and suitable unsaturated-fat sources while improving the quality of fat and reducing excessive sodium. Benefits depend on what replaces the foods reduced. Clinical lipid and blood-pressure goals require broader assessment, including medication when indicated. Athletes should adapt portions and carbohydrate supply to training rather than assuming a heart-supporting pattern must be low in energy, extremely restrictive or unsuitable for fueling exercise.

Behavioral nutrition work links specific actions to barriers and supports in daily life. Self-monitoring, problem solving, achievable goals and supportive follow-up can make change more practical. Monitoring should be proportionate: detailed weighing or recording can be counterproductive for someone vulnerable to disordered eating. Motivational interviewing explores the person's own reasons and autonomy, while cognitive behavioral therapy addresses relevant patterns through a structured therapeutic process. These approaches should not be reduced to blame or generic encouragement.

Malnutrition can occur across body sizes, including in a person with obesity. Assessment considers reduced intake or assimilation, disease-related inflammation, weight trajectory and relevant body-composition or functional findings. Undernutrition, overnutrition and individual micronutrient deficiencies describe overlapping but distinct problems. A stable or high body weight cannot exclude inadequate nutrient supply or muscle loss. In an athlete, declining intake, recurrent illness or unintentional weight loss deserves assessment rather than automatic praise for becoming lighter.

Clinical nutrition translates assessment into an individualized intervention and evaluates the response. A disease name alone cannot define the prescription: disease stage, medication, symptoms, laboratory findings, intake and functional goals matter. Screening identifies possible risk, whereas a full assessment supports a nutrition diagnosis and care plan. A sports context adds training demands but does not remove clinical requirements. Coordinate care when medical and performance objectives interact instead of applying a standard athlete menu to every patient.