Abstract
Introduction: Diet has a great impact on the outcome of pregnancy. Health professionals have an important role in monitoring anthropometric and laboratory tests, observing signs and symptoms resulting from nutritional deficiencies and excesses, and supplementation is therefore always used in a specific and individualized manner. Lifestyle monitoring is essential for a healthy pregnancy. Objective: A systematic review was carried out to present the precise nutrology importance and lifestyle changes in a healthy pregnancy. Methods: The PRISMA Platform systematic review rules were followed. The search was carried out from August to September 2025 in the Scopus, PubMed, Science Direct, Scielo, and Google Scholar databases. The quality of the studies was based on the GRADE instrument and the risk of bias was analyzed according to the Cochrane instrument. Results and Conclusion: A total of 102 articles were found, and 30 articles were evaluated in full, and 12 were included and developed in the present systematic review study. Considering the Cochrane tool for risk of bias, the overall assessment resulted in 24 studies with a high risk of bias and 22 studies that did not meet GRADE and AMSTAR-2. Most studies showed homogeneity in their results, with X2=82.5%>50%. Pregnancy is a time with physiological and metabolic changes of great importance for the development of the fetus. Good nutrition pre-conception, during pregnancy, and lactation associated with lifestyle changes are predictive of better health for children in childhood and adulthood. In this process, the role of the health professional is important to monitor whether development is adequate. Adequate maternal intake of macronutrients and micronutrients can meet all recommended daily needs and, in this case, it will not be necessary to supplement with multivitamins. Nutritional deficiencies are common, especially in iron and vitamin D, and must be corrected before symptoms appear.