This systematic review highlights the effects of dairy products on muscle mass , muscle strength and body performance in the elderly population in the perspective of Ca , P , vitamin D and protein
The risk of sarcopenia increases with aging .
Malnutrition in the elderly population is an important risk factor for sarcopenia .
Calcium ( Ca ) , phosphate ( P ) , vitamin D and protein are key nutrients for the human body and affect muscle mass and quality .
Dairy products are rich in these nutrients , which implicates that dairy products might be ideal for elderly population .
Vitamin D supplementation has no effect on insulin resistance assessment in women with polycystic ovary syndrome and vitamin D deficiency.
Insulin resistance is one of the most common features of polycystic ovary syndrome ( PCOS ) . Some studies suggest that vitamin D deficiency may have a role in insulin resistance ; thus , the aim of the current study was to determine the effect of vitamin D supplementation on insulin resistance in women with PCOS and a vitamin D deficiency . We hypothesized that vitamin D supplementation would lower the glucose level and insulin resistance in women with PCOS and a vitamin D deficiency . The current study was a r and omized , placebo-controlled , double-blinded trial with 50 women with PCOS and a vitamin D deficiency , 20 to 40 years old , assigned to receive 3 oral treatments consisting of 50,000 IU of vitamin D₃ or a placebo ( 1 every 20 days ) for 2 months ( vitamin D , n = 24 ; placebo , n = 26 ) . The fasting blood glucose , insulin , 25-hydroxyvitamin D , and parathyroid hormone levels , as well as the homeostasis model assessment of insulin resistance and quantitative insulin sensitivity check index were measured at baseline and after treatment . In the vitamin D group , the serum level of 25-hydroxyvitamin D increased ( 6.9 ± 2.8 to 23.4 ± 6.1 ng/mL , P < .0001 ) , and the parathyroid hormone level decreased ( 70.02 ± 43.04 to 50.33 ± 21.99 μ IU/mL , P = .02 ) . There were no significant changes in the placebo group . There was a significant increase in insulin secretion in the vitamin D group ( P = .01 ) , but this was not significant compared with the placebo group . The fasting serum insulin and glucose levels and the insulin sensitivity and homeostasis model assessment of insulin resistance did not change significantly by the end of the study . We were not able to demonstrate the effect of vitamin D supplementation on insulin sensitivity and insulin resistance in women with PCOS and vitamin D deficiency
This systematic review highlights the effects of dairy products on muscle mass , muscle strength and body performance in the elderly population in the perspective of Ca , P , vitamin D and protein
The risk of sarcopenia increases with aging .
Malnutrition in the elderly population is an important risk factor for sarcopenia .
Calcium ( Ca ) , phosphate ( P ) , vitamin D and protein are key nutrients for the human body and affect muscle mass and quality .
Dairy products are rich in these nutrients , which implicates that dairy products might be ideal for elderly population .