any eligible subject refuses to apply with informed written consent before the start of the study. men or women previously diagnosed with chronic diseases, including kidney disease or git problems. who are receiving vitamin d3 supplements (3 months before the start of the study). pregnant, breastfeeding females, females using hormonal contraceptives

any eligible subject refuses to apply with informed written consent before the start of the study. men or women previously diagnosed with chronic diseases, including kidney disease or git problems. who are receiving vitamin d3 supplements (3 months before the start of the study). pregnant, breastfeeding females, females using hormonal contraceptives