Demographic characteristics
One-hundred participants were included into the NutriAging Vitamin D study, consisting of 67% males and 33% females at baseline. Thirty-three study participants were allocated to the CON group (23 males/10 females), 30 participants to the VDD group (20 males/10 females) and 37 subjects started the intervention in the VDM group (24 males/13 females). The mean age of the participants was 70.6 ± 4.5 years. The mean age for men was 70.3 ± 4.7 years and the mean age of the women was 71.2 ± 4.7 years. Overall, the study subjects had a BMI of 27.3 ± 4.7 kg/m