Nutrition disorders arise from various interacting factors: cultural, environmental, genetic, physiological, and psychological. Excessive consumption of highly processed food, sugar, salt, alcohol, and saturated fats is a problem nowadays, and consumption of fish, vegetables, and fruit is insufficient. Overeating and an unbalanced diet are often accompanied by stress and a lack of physical activity. This is intensified by easy access to "comfort food", "fast food", and "junk food". The number of people suffering from overweight and obesity, so-called diseases of civilization, is increasing. Not only is being overweight a risk factor for the development many other metabolic diseases, but it also significantly worsens the quality of life. This also concerns people working at sea. Obesity is favoured by emotional eating disorders (EED), uncontrolled/compulsive eating - binge eating disorders (BED), and night eating disorders (NED). Most frequently, eating is a reaction to stress or boredom. It alleviates tension and improves the mood, also of seafarers.