CRP and obesity due to melanocortin 4 receptor deficiency: Children and adolescents with obesity had higher concentration of 25(OH)D3 and CRP than Children and adolescents with different nutritional conditions had different vitamin A status (c2 = 12.704, p = 0.048), while their vitamin D status was similar (c2 = 15.443, p = 0.079) (Table 3).