This research aims to investigate whether the effects of premenstrual syndrome influences the consumption and purchases made by the women. The focus is the emotional aspects that could affect the woman as a consumer. This topic is very important these days because it is a subject that is increasingly being discussed, however there are no studies on it. The work could not only help women to better understand what happens to her and realize that the symptoms are similar for all women, but would also be very relevant for food companies to create a product line specially designed for women in this period of PMS. For this, we analyzed different moments of woman s life, as the head of the household, as workers, as consumers, along with PMS which would leave her more prone to modify her consumption.