Vitamin D insufficiency and factors associated: a study with older adults people from primary health care network.

This article aims to analyze vitamin D insufficiency and factors associated among older adults using primary health care services. This is a cross-sectional study that evaluated 533 older adults individuals (≥ 60 years old) in three cities in the state of São Paulo, Brazil. Serum level of 25-hydroxyvitamin D (25-OHD) was evaluated by chemiluminescence.