Rs10735810 , rs1544410 , rs7975232 , and rs731236 polymorphisms of VDR , the serum sex hormone level , free estrogen index ( FEI ) and free androgen index ( FAI ) as well as vitamin D , were evaluated in 766 persons ( 362 women and 404 men ) selected from 5695 Polish population , aged 65-90years from the PolSenior survey .