Abstract Objective: to characterize and analyze Nutritional Care (NC) for older adults in Primary Health Care (PHC), identifying how food and nutrition actions (F&N) were performed and the conceptions that guided them. Methods: a cross-sectional, quantitative and qualitative study was performed in PHC in Santos, São Paulo, Brazil, in two phases: i) a census study was carried out of health units, N=28 (100%), with managers who answered a structured interview to assess NC; followed by descriptive analysis. ii) a deeper investigation of this diagnosis was performed, using semi-structured interviews with key informants (interviewees) of care for older adults; being a nutritionist was not a criteria, as there were only three such professionals throughout the entire PHC, and one of the health regions studied was not served by a nutrition professional. The concept of theoretical saturation was used for the sampling plan; content analysis was carried out and the inferences were supported by references of integrality and aging. Results: NC for older adults was highlighted by individual care, predominant in all the services studied (28) (100%); nutritionists participated in this activity in just nine units (32.1%). Theoretical saturation was achieved with nine interviews. According to the discourse analysis, F&N actions were generic, focused on the treatment of diseases, influenced by negative aspects attributed to aging, there was no planning based on the needs of the territory, and health professionals identified themselves as information transmitters, leaving the responsibility of acting on such information to the older adults themselves. Conclusion: F&N actions were guided by the biomedical paradigm, fragmented, restricted to disease management, imputing the responsibility for health to the individual themselves. Thus, NC distanced itself from the promotion of healthy aging, weakening its strategic role in the quest for integrated care.