Macrominerals

Question 1

what are the effects of low potassium intake?

Answer 1

1. increased blood pressure
2. increased salt sensitivity
3. increased bone turnover
4. increased risk of kidney stones

Question 2

how does high protein concentration affect vitamin D metabolism?

Answer 2

increases excretion (however, also increases intestinal reabsorption)

Question 3

diets low in calcium:phosphate lead to progressive bone loss due to what mechanism?

Answer 3

phosphorous induced stimulation of PTH release

Question 4

what is the effect of PTH and vitamin D on phosphorous?

Answer 4

increases absorption

Question 5

what are the functions of magnesium?

Answer 5

1. bone mineralization - crystal lattice, pool maintenance
2. cell membranes - bound to phospholipids
3. enzymes - glycolysis, TCA, creatinei phosphate formation, DNA synthesis, amino acid and protein activation and synthesis