*3.4. E*ff*ect of Demographic and Clinical Variables on PUFAs Nutritional Status*

In the SZ group, there was a positive correlation between DHA intake and BMI (*R* = 0.39; *p* < 0.05), as well as between duration of illness and BMI (*R* = 0.38; *p* < 0.05). We did not find a relationship between schizophrenia symptoms (measured with PANSS) or clinical data and FA nutritional status or metabolism.

In the HC group, there was a positive relationship between AA serum concentration and age (*R* = 0.36; *p* < 0.05) and BMI (*R* = 0.44; *p* < 0.05), between EPA concentration and BMI (*R* = 0.33; *p* < 0.05), and between DHA concentration and age (*R* = 0.41; *p* < 0.05). There was also an inverse relationship between GPR120 serum concentration and age (*R* = −0.50; *p* < 0.05) and between intake of EPA and age (R = −0.45; *p* < 0.05), as well as a positive relationship between intake of LA and BMI (*R* = 0.44; *p* < 0.05) and between intake of total PUFAs and BMI (*R* = 0.40; *p* < 0.05).
