Nutrition Flashcards
FDA requirement for supplements
safe, but does not determine effectiveness
what are the fat soluble vitamins
A, E, K, D
role of vitamin A
vision
role of vitamin E
antioxidant
role of vitamin K
required for synthesis of clotting factors
when may vit K need to be supplemented
warfarin (supratherapeutic INR)
infants
sign of deficient vitamin K
hemorrhagic disease
role of vitamin D
calcium absorption, bone health
what is required for Vit D activation?
which precursor is monitored?
2 hydroxylation to activate
25(OH)D is monitored
risk for vit D deficiency
limited sun exposure
kidney dysfunction
breastfed infant without supplementation
what vit D level is considered deficient
<12 ng/mL
what vit D level is considered inadequate
<20 ng/mL
what vit D level is considered toxic
> 50 ng/mL
preventative vit D dosing
600-1000U (15-25 mcg) QD
high dose VIt D treatment is used if
Vit D <12ng/mL, symptomatic, or concomitant hypocalcemia
high dose VIt D treatment dosing
50,000 U (1250 mcg) QW for 6-12 weeks
low dose vit D treatment is used if
levels 12-20 ng/mL without symptoms or concomitant hypocalcemia
low dose vit D treatment dosing
800-1000 U (20-25 mcg) QD for 3-4 months
not responding –> increase to 2000 U QD
maintenance dose of vit D
600-2000 U (15-50 mcg) QD
populations that may need higher vit D doses
obesity, malabsorption, gastrectomy
what are the water soluble vitamins
thiamine/B1, riboflavin/B2, niacin/B3, pyridoxine/B6, cyanocobalamin/B12, folate/B9, vitamin C
role of thiamine/B1
energy metabolism
major sign and risk factor for thiamine deficiency
wernicke’s
alcohol use disorder
role of riboflavin
component of 2 enzymes involved in energy production, cell function, growth, and development