The objective of this bachelor's thesis is to obtain a complex view of nutritional counselling and to prove or disprove influence of nutritionist's care on triggering and developing anorexia nervosa. The theoretical part describes the conditions for practising nutritional counselling and differences between dietitians and nutritionists. Also, this part focuses on factors that can trigger anorexia nervosa, its types, and prevention. The research was conducted by evaluating interviews with three clients of Anabell counselling centre and three clients of a nutritionist. The results show that the trust in the nutritionists is high and the clients precisely follow their recommendations which can affect their health. Inspection of the medical his...