The World Health Organization (WHO), the United Nations International Children's Emergency Fund (UNICEF) and the Ministry of Health, recommend that breastfeeding be up to 6 months of age. After this period, complementary feeding should be added, and breast milk shoul continue until two years of age. This is explained by the fact that human milk provides protection to the babies against pathogens, being a strong ally in building their immunity. Thus, the present study aims to show the importance of breastfeeding in the construction of the infant's immune system, specifically in innate immunity, as well as also to describe the consequences that early weaning can cause the newborn's health. This study is a bibliographic review, with a qualitative approach, of an exploratory type. Because breast milk has necessary components for the development of the newborn, breastfeeding is essential in building the newborn's immunity, especially in the innate, and early weaning should therefore be avoided.

Os anticoncepcionais são um conjunto de métodos que tem como objetivo mais comum evitar a gravidez. Em relação à utilização frequente de métodos contraceptivos hormonais, alguns estudos demonstram que o uso prolongado pode acarretar malefícios à saúde da mulher. O presente trabalho tem como objetivo descrever os principais tipos de anticoncepcionais hormonais, abordar os mecanismos de ação de cada um e descrever o surgimento de patologias relacionadas ao uso prolongado destes. O estudo trata-se de uma revisão bibliográfica de natureza qualitativa com caráter exploratório. Os contraceptivos surgiram dando certa liberdade à mulher no que diz respeito à gravidez, possibilitando a escolha do momento para ideal isto, porém seu uso deve ser feito com acompanhamento de um médico especialista, uma vez que serão analisadas as características individuais da mulher e dessa forma, o medicamento mais adequado será utilizado.

Self-medication refers to the selection and use of medicines by an individual, without prescription, advice, or monitoring by a qualified health professional, which may cause serious risks and consequences to health, and in some cases, it leads to death. Such practice can occur on its own or even for an indication, and its main purpose is to relieve signs, symptoms, and cure diseases. This habit occurs frequently in our daily lives, not only in Brazil but worldwide. Thus, the present work aims to show how self-medication is frequent and how this practice can harm the health and well-being of the population. This study is a bibliographic review of a qualitative nature, with an exploratory characteristic. Because it is a frequent practice in daily life, the population needs to be aware of the possible risks that self-medication can cause to health, through educational campaigns, lectures and posters. In addition, as it is a recurring theme, it is interesting that studies consider even more deeply the consequences of this practice, such as the difficulties it brings to the treatment against future infections in self-medicating patients.